HOME

PHILIPS AUDIO service bulletins and tips


MODEL: DCC951
SYMPTOM: CD SYNC recording from CDC936 stops after first disc
CURE: Recording via CD SYNC from CDC936 is causing problems. When tracks on several discs are programmed, the DCC player starts recording the track(s) of the first disc. When CDC is changing the disc, the set DCC951 comes in REC PAUSE mode and stays in this mode. This problem is caused by USER software U028 of DCC951. Solution: Replace USER microprocessor 7800 on front panel by an OTP loaded with software USER 034(service code 4822 900 10716).
MODEL: DCC951
SYMPTOM: Audio plops when the player is switched off.
CURE: Audio plops are audible when the player is switched off in standby. This can be solved by connecting resistor 3961 (see Power supply circuit diagram on page 7-2 in service manual) from +5Vper to the rectified +10V over capacitor 2904. REMARKS : In/out panel with improved lay-out L4 will be introduced from week 9526 onwards.
MODEL: DCC951
SYMPTOM: DCC head defect, no recording, several isolation shorts on DCC head.
CURE: Isolation shorts are caused by ESD. To protect against ESD replace (or bridge) C2999 on Read/Write panel by a 4k7 resistor (4822 051 20472). It is advised to introduce this in all sets with which will be offered for repair, and the modification has not yet been implemented yet. Implementation date: In R/W boards from production week 9540 onwards.
MODEL: DCC951
SYMPTOM: Wrong COPY PROHIBIT indication
CURE: Cause: DCC951 display gives the indication COPY PROHIBIT when recordings according to SCMS are made. Particularly recordings from SONY CD-players and MD-players (with pre-recorded software) cause problems. Cure: Replace digital microprocessor, item 7700 on digital board of DCC module, by an OTP loaded with software programme D028 (service code 4822 209 12972)
MODEL: DCC951
SYMPTOM: Set will not wind using remote control from 900 system.
CURE: When using a Remote Control from the 900-series the set will not WIND. Using the RC delivered with the set gives no problem. The problem is caused by user software version U28. Replace USER uP 7800 on front panel (service code 4822 209 33369) When ordering 4822 209 33369, an OTP loaded with software USER 034, service code 4822 900 10716, will be delivered. REMARKS : The new software, version 32 has been implemented in production from week 9507 onwards.
MODEL: DCC951
SYMPTOM: OPERATING: Track numbering
CURE: Problem: Track numbering does not start at number 1 when recording side B. Cause: Per default single Album format is defined. REMARKS : Track numbering starts at side A (when AUTO EDIT ON) directly after the LEAD-IN area with number 1. Track numbering is automatically incremented when recording new tracks and continues on side B. In other words the DCC tape is seen as one single album where one may select a particular track, and it does not matter whether the required track is on side A or B of the tape. If user wants to start track numbering with track 1 on side B to obtain e.g. a dual Album, EDIT function must be performed. When in REC-PAUSE mode: - - press EDIT key to enter the edit mode - select required EDIT function by pressing EDIT several times - press RECORD key to actually edit the tape. Next edit functions are available: - - START NEW SIDE: to start track numbering on side B with track number 1. When restarting of track numbering is required, user must search for last recording on side A, record START NEW SIDE indication. - CONTINUE B: track numbering is continued at side B. - GO TO START A: marks the position where the deck should start winding to the beginning of side A and stop.
MODEL: DCC951
SYMPTOM: OPERATING: Renumbering
CURE: Problem: Renumbering not possible when making a new recording at specific location. Cause: In User format is RENUMBER not possible. REMARKS : Before recording first initializing of the tape has to be performed. See also newsletter item 63.01
MODEL: DCC951
SYMPTOM: OPERATING: Music passages are lost
CURE: Problem: Music passages are lost after renumbering. Cause: 'CONTINUE B' (REVERSE) and 'GO TO START A' (STOP) marker cannot be erased. REMARKS : Markers which are recorded on the tape, control the set in play back mode. This means that in PLAY mode all information recorded on tape behind the 'Continue B' marker or 'Go to Start A' marker is skipped. The recordings behind those markers can only be reached by winding over that marker.
MODEL: DCC951
SYMPTOM: RECORDING: Old recordings remain
CURE: Problem: Parts of old recordings remain after overwriting existing recordings. Cause: Cassette is not initialized correctly before overwriting. REMARKS : When a CD-synchro recording is made on a DCC-tape which was already recorded in the past, the set switches at the estimated end from side A to side B. When playing back this part of the tape first the 'new' music is heard followed by the 'old' music until end of side A and in the beginning of side B. This problem can be prevented by renumbering the tape. NOTE: To overwrite a previous recorded DCC tape press REWIND key more than 0.5 second (set must be in STOP mode). Tape is rewound to the beginning of the tape. By pressing REC SELECT/PAUSE key the LEAD IN portion of about 10 seconds is recorded. Afterwards the set goes to Record Pause mode. When pressing RECORD the recording starts and tape will be completely overwritten. Set 'sees' tape as being new. To record in the middle of an existing track (recording on a specific location) first the location should be searched, than (in STOP mode) press subsequently REC SELECT/PAUSE and RECORD.
MODEL: DCC951
SYMPTOM: OPERATING: Operation of source selector
CURE: Problem: Operation of source selector is not clear. Cause: IFU does not explain selection of source very clear. REMARKS : After installation of the DCC recorder all input sources should be selected via source preset. This is done as follows: - Press PRESET - By pressing REC SELECT/PAUSE the default CD is indicated on display. By pressing NEXT key the cable connection made with CD player can be selected. By pressing again REC SELECT/PAUSE the next input source (tuner etc) can be selected. Every time again the applied cable connection with source can be selected via the NEXT key. - When all sources (to be recorded from) via REC SELECT/PAUSE and NEXT are selected these presettings are stored by pressing PRESET. Making a recording from one of the sources the latest used source (this setting is also stored by the set) is selected. If another source should be selected this is done as follows: - Press REC SELECT/PAUSE, the default source is already indicated on display (except Microphone). - By pressing REC SELECT/PAUSE again next source is selected. - Subsequently pressing REC SELECT/PAUSE gives the other available sources. Sequence of source selection is CD TUNER AUX1 AUX2 CD TUNER, etc. In case microphone socket has been connected this input source is selected automatically. NOTE:In case a digital recording will be made from CD or AUX as source and no digital connection is made the message: 'CHECK DIG IN' is displayed and one should reconnect digital cable from recorder to source. For more detailed information See the Instructions for Use. A quick reference card for ease of operating is made available: For DCC730 with service code 4822 725 22612 For DCC951 with service code 4822 725 22611 These reference cards contain clear pictographs to operate the DCC recorder.
MODEL: DCC951
SYMPTOM: PLAYBACK: DCC cassettes
CURE: Problem: DCC cassettes causing faults (a.o. drop outs, tape salad, clean head). Cause: DCC cassettes outside specification. REMARKS: The used DCC cassette is not according the DCC specification and so NOT released by Philips. (e.g. some of Maxell and Fuji cassettes) It is recommended to use released Philips DCC cassettes only.
MODEL: DCC951
SYMPTOM: PLAYBACK: Skipping small part of music
CURE: Problem: Skipping small part of music of pre-recorded DCC-cassettes after track search Cause: Repositioning problem due to high fast wind/rewind speed. REMARKS: After track search command the DCC does not start exactly at the beginning of a track. First approx. 500 msec. of track are not played back. This problem does not occur when DCC-cassette is played-back normally. This deviation is dependant on the position of the tape; via the reel-tacho signals the movement of the reel is measured not the tape. To reduce this error a compensation is done, based on an average required repositioning within ± 0.5 sec. Only in the minus area this short jump could be noticed. This problem cannot be solved.
MODEL: DCC951
SYMPTOM: TRACK AND TIME: REMaining time
CURE: Problem: REMaining time indication is not reliable. Cause: Calculation of remaining time by DCC recorder REMARKS : The DCC recorder starts with defining an estimated total remaining time. After that it calculates the elapsed time by reading total time information of played back tracks. The remaining time left on tape is the estimated playing time of the cassette minus the elapsed time. The remaining time might have a tolerance of about 1 minute. So it might happen that for instance the display shows 'REM TIME 5:38, and yet a music piece of about 4:14 will not fit.
MODEL: DCC951
SYMPTOM: OPERATING: Operate DCC recorder
CURE: Problem: It is difficult to operate DCC recorde. Cause: DCC recorder is software controlled (play back = CD similar). REMARKS : Correct understandings of the user-recorded tape formats and markers will help customers to make full use of the benefits of the DCC recorder. See also newsletter 63.01. For ease of operationg a quick reference card is made available: For DCC730 with service code 4822 725 22612 For DCC951 with service code 4822 725 22611 These reference cards contain clear pictograms to operate the DCC recorder for every mode.
MODEL: DCC951
SYMPTOM: OPERATING: DUBBING ACTIVE
CURE: Problem: Message 'DUBBING ACTIVE' on display of DC951. Cause: Via presets like: source CD and CD SYNCHRO ON the reference for CD dubbing is defined. REMARKS : After actuating REC SELECT/PAUSE key the DCC951 is looking for its preference entry in the Philips 900 series system, with correct ESI BUS connections. When the presets are set to source CD and CD SYNCHRO ON the set is waiting for acknowledge command from CD player. In case other keys are pressed in the meantime the message 'CD DUBBING ACTIVE' is shown as operating error message. If ESI BUS is not connected in the right way the message 'NO CD SYNCHRO' is shown. NOTE:CD SYNCHRO mode can be changed with the PRESETS function as follows: - press PRESETS - press RECORD - by pressing 'wind' or 'rewind' the presetted CD SYNCHRO mode can be switched ON or OFF - press PRESETS to store settings. Only valid for DCC951.
MODEL: DCC951
SYMPTOM: OPERATING: AUTO STOP mode
CURE: Problem: DCC recorder does not stop after last recording when selected AUTO STOP mode. Cause: Auto stop function is wrongly interpreted by user. REMARKS : With the PRESETS function the playback function can be set as soon as a cassette is inserted. With playback set at AUTO PLAY, playback will always be started automatically as soon as the tray has been closed (and cassette is inserted) by pushing the tray by hand or the POWER has been switched ON. With playback set at AUTO STOP, playback will not start automatically. NOTE:To find last recording user should use APPEND to search for the end of the last recording (which was marked when STOP was pressed during recording). APP > or APP < appears. When this position has been found the last 10 seconds will be played back (APPEND PLAY), after which the RECORD PAUSE (REC-P) mode is entered.
MODEL: DCC951
SYMPTOM: OPERATING: NO CD SYNCHRO desired
CURE: Problem: NO CD SYNCHRO desired by user of DCC951. Cause: Function CD SYNCHRO ON is selected in preset. REMARKS : When CD SYNCHRO option is not required by user, or not via ESI BUS connected with other sets from the Philips 900 series system, it should be switched off. This can be done as follows: - press PRESETS - press RECORD - press WIND or REWIND to switch to CD SYNCHRO OFF - press PRESETS to store presets. To use CD SYNCHRO ON presets must be changed by applying above mentioned procedure again and the ESI BUS should be proper connected to other sets in the Philips 900 series system. Only valid for DCC951.
MODEL: DCC951
SYMPTOM: RECORDING: Clicks are audible
CURE: Problem: Clicks are audible when interrupting recording with REC PAUSE. Cause: Difference between digital mute (-110dB) and analog silence (>-30dB) can be recognized as click being recorded. REMARKS : By mixing different titles (from e.g. various Vinyl Records) clicks are audible between the analog silence signal of the vinyl recording and the interrupting of the recording with REC PAUSE (digital mute). It is this difference in level between the analog silence and the digital mute (system detects a sudden increase of level) that the DCC recorder records, and is audible as a click during play back at high volume level.
MODEL: DCC951
SYMPTOM: TRACK AND TIME: Track and Time information is erased
CURE: Problem: Track and Time information is erased when adding text information. Cause: Not correct initialized cassette. REMARKS : Sometimes track number and time information is erased when recording text information. When using RENUMBER to reconstruct the track numbering again the missing time information will be misinterpreted as tape end and tape direction is reversed, while renumbering continues on side B.
MODEL: DCC951
SYMPTOM: RECORDING: Analog level
CURE: Problem: Analog level cannot be reduced until zero using REC LEVEL control. Cause: No analog fade in/out option available. REMARKS : Recording level control is not meant to obtain fade in/out effects for own analog recordings. Typical fade in/out feature is not available on DCC sets. Analog recording level control is meant to be used for adapting input level for analog signals. To obtain real fade in/out effects an audio mixing unit (e.g. SBC5370), connected to AUX - ANALOG IN, should be applied.
MODEL: DCC951
SYMPTOM: RECORDING: Writing markers in AUTO EDIT
CURE: Problem: Writing markers in AUTO EDIT mode after more than 3 seconds of silence. Cause: IFU mentions 3 seconds of silence. REMARKS : In AUTO EDIT ON mode the DCC recorder writes new track numbers on the tape when silences (signal level below -60dB) of more than 3 seconds are detected during recording from ANALOG input. The signal level of the source must be below -60dB before DCC system recognizes a music pause. It might happen that during fading out of music, the user perceives a silence but that signal level is not dropped below -60dB. In this case the music pause seems to be much longer than 3 seconds. Note: In AUTO EDIT OFF the DCC recorder will not perform automatic track increment when recording from analog sources. AUTO EDIT is always set to ON when a digital source is connected (via digital sockets).
MODEL: DCC951
SYMPTOM: RECORDING: Track numbering
CURE: Problem: Track numbering DCC does not match with the track numbering of the source (e.g. when digital copying a Compact Disc) Cause: Track number is automatically increased at end of side A with CD SYNCHRO OFF. REMARKS : At end of side A a CONTINUE B marker is recorded. The DCC standard requires a new track number at the start of side B. This marker is not on the CD, so all recordings from side B have a track number (CD track number + 1).
MODEL: DCC951
SYMPTOM: RECORDING: Track numbering
CURE: Problem: Track numbering does not match with the track numbering of the source (e.g. when analog copying a Compact Disc). Cause: Track number is recorded after an analog silence (signal level below -60dB) for more than 3 seconds and track number is automatically increased at end of side A with CD SYNCHRO OFF. REMARKS : - In AUTO EDIT ON mode a new track number will be written after every silence for more than 3 seconds, where 'silence' is defined as an analog signal level below -60dB. It might happen that a source (Compact Disc) has music pauses for more than 3 seconds within one music number, or pauses between tracks are shorter than 3 seconds. User may edit the track numbering afterwards by CONNECTing or SPLITting TRACKS. By connecting tracks the current and next 'pause' track will be connected and later on recognized as one track. During this action the DCC recorder will erase the START indication of that 'pause' track. By splitting tracks the current track will be split up in two successive tracks. - DCC standard requires a new track number at the start of side B. (See also problem RECORDING: Writing markers in AUDIO EDIT) NOTE:When tracks have been connected or splitted also a RENUMBER action is necessary to ensure a correct track number sequence.
MODEL: DCC951
SYMPTOM: RECORDING: Microphone recording input
CURE: Problem: Microphone recording input is only Mono Cause: Only Mono microphone pre-amplifier designed. REMARKS : When microphone is connected, the DCC set automatically selects the MONO microphone input. Recording via another source is not possible as long as microphone is connected. When Stereo recording via microphone is required it is recommended to connect microphone(s) to an audio mixing unit (e.g. SBC5370) which must be connected to AUX, ANALOG IN.
MODEL: DCC951
SYMPTOM: PLAYBACK: CLEAN HEAD
CURE: Problem: CLEAN HEAD indication Cause: Contaminated head. REMARKS : The special design of DCC-head makes it sensitive for contamination, especially when low quality ACC tape (Fe tape) is used. The applied DCC tape consists of high quality chrome tape, which will not contaminate the head. In order to ensure high quality recording the warning of the CLEAN HEAD indication is displayed according following criteria: - about 8 hours of total playing back time of ACC tape. - 2 channels or more on DCC tape not detected by DCC head for more than 3 seconds. please notice:In case CLEAN HEAD indication was caused by a temporarily bad HEAD-TAPE contact, the message will disappear after pressing the 'TIME' or 'TEXT' key.
MODEL: DCC951
SYMPTOM: PLAYBACK: De-emphasis
CURE: Problem: De-emphasis in DCC player is not functioning after making a digital copy of a Compact Disc. Cause: In PLAYBACK mode the DCC recorder switches de-emphasis ON or OFF dependant to the contents of the system information (SYSINFO). REMARKS : De-emphasis of a DCC recording is only activated in PLAYBACK mode if concerned bit in sysinfo is switched on. This flag is set during recording from digital input. This information is sent from the CD player to the DCC recorder. In play back the DCC recorder switches de-emphasis on or off dependant of the flag setting in sysinfo. Recording via analog input will not set the de-emphasis flag. This is already performed in the CD player via the information in the SUBCODE. Manually on/off switching of de-emphasis by user is not possible.
MODEL: DCC951
SYMPTOM: Codenumber information
CURE: Codenumber information A small quantity of complete Digital Deck Units is available with service codenumber 4822 691 10666.
MODEL: DCC951
SYMPTOM: Initialising DCC
CURE: Initialising DCC NEW DCC CASSETTE: How to initialize the cassette (= making a lead-in recording at the beginning of the tape) is stated in the Instructions for Use. In the various typenumbers the following keys have to be activated: For DCC091, DCC450: REWIND, APPEND For DCC170: REWIND, REC PAUSE For DCC300, DCC380: REWIND, APPEND For DCC600: REWIND, APPEND For DCC730, DCC951: REWIND, REC SELECT/PAUSE For DCC900: REWIND, APPEND For more details: see Instructions for Use of concerned typenumber; chapter recording. After this initialization the track number and (absolute) time information will be recorded on the user-recorded tape. The above shown survey is a simplified universal applyable operation. The most problems are caused by the fact that users are accustomed to apply the record function straight forward, like recording ACC-cassettes. PARTIALLY RECORDED For all typenumbers, except DCC170: Use APPEND to search for end of last recording in case of partially recorded DCC-tape and so proper coupling of old and new recordings is made. For DCC170: Search Manually for END indication of last recording and make new recordings from that spot onwards. OVERWRITING In case of completely overwriting a user-recorded DCC-tape the initializing procedure has to be performed again! CONCLUSION: It is very important to initialize a user-recorded DCC-tape. If a DCC-tape is initialized or not, can easily be seen on the display information in Play-back mode. Starting at the beginning of the tape track time An empty DCC tape:: Not initialized DCC tape (User format) 11 : 24 Initialized DCC tape (Super-user format)312 : 49
MODEL: DCC951
SYMPTOM: Introduction of software USER 034
CURE: Introduction of software USER 034 - Improved software USER 034 is available as programmed OTP and can be ordered with service code 4822 900 10716. In comparison with software USER 032, the following complaints will be solved: - DCC is freezed by amplifier when DCC is searching from STOP or winding (should not be freezed). - TIMER PLAY on ACC: DCC always goes to TRACK 1 (should play from current position). - TIMER PLAY/RECORD with DCC awake and tray open: tray stays open (should close). - TIMER PLAY with superuser-tape and current tracknumber unknown: DCC starts playing from TRACK 1 (should play from current position). - TIMER PLAY on ACC: DCC doesn't wake up. - TIMER RECORD: DCC doesn't start recording. - CLEAN HEAD INDICATION
MODEL: DCC951
SYMPTOM: Instructions for Use Quick reference card
CURE: Instructions for Use Quick reference card - To show all important operations of the DCC player a so called Quick reference card is inserted in the instructions for use. To have this quick reference card also available in service workshops (1 double sided A3 page) it can be ordered with service code number 4822 736 22611.
MODEL: DCC951
SYMPTOM: Service Manual correction
CURE: Service Manual correction - On page 7-6 and 7-8, two items are missing in the drawing of the front panel. During the conversion of the drawing into film, Capacitor 2456 and tact switch 1817 have been disappeared. Capacitor 2456 should be located next to IC 7455, switch 1817 is mounted next to switch 1818. For the location of these parts, see partial lay-out on next drawing. REMARKS : During the production process, an error was introduced in the Service printing of the front Panel. The same capacitor has been mentioned 2416 but should read 2456. Capacitor 2416 is only a part of the Headphone panel.
MODEL: DCC951
SYMPTOM: Demo mode
CURE: Demo mode - A demo mode have been defined in the software program: Demo mode; Non protected: After switching-on the power and with the set in STOP position, the Demo mode can be entered by pressing the SCROLL button. Pressing the STOP button will disable this mode. Demo mode; protected (for the trade): When switching-on the power, while pressing the SCROLL button, the protected trade mode will be entered. In this mode the drawer cannot be opened. This mode can only be disabled by means of the O/C button of the remote control (or by erasing the EEPROM in service mode).
MODEL: DCC951
SYMPTOM: Service Manual correction
CURE: Service Manual correction - Page 10-10: The service code number of Tape Drive Control microprocessor 7500 should read 4822 209 33915 (a microprocessor type P80C52EBPN-CV5454N with embedded ROM program) instead of 4822 209 33394 (an empty OTPP87C52EBPN).
MODEL: DCC951
SYMPTOM: Partslist tray loader
CURE: Partslist tray loader - A new assembly, consisting of items 88, 92 and SW81, will be delivered when ordered service codenumber 4822 256 92147. Item 506 is from now on available. Service codenumber reads 4822 214 52175. This assembly consists of a printed board mounted to the cassette deck mechanism. It will replace the following item/codenumbers: SW101 ... SW105 = 4822 130 91328 SW110 = 4822 271 30821 SW111 ... SW112 = 4822 271 30823 and it includes the S-reel and T-reel photo sensors.
MODEL: DCC951
SYMPTOM: Modification replace procedure/adjustment DCC head
CURE: Modification replace procedure/adjustment DCC head Herewith the actions of the write current adjustment of the DCC head are given. A. First of all take care that tape speed is within the prescribed tolerances (3150 Hz +- 0.25%). B. Short circuit the Automatic gain control (AGC) on the read/write board: Interconnect measuring points 7 and 10. C. Insert the DCC 9.6 kHz level calibration tape (4822 397 30264). With this tape the reference level of the play back mode can be noted. (VppRDMUX) D. Play back the Calibration level Tape and measure the average peak-peak level of the RDMUX signal on measuring point 3 on R/W board. Trigger oscilloscope on the RDSYNC signal, measuring point 2. E. In case the RDMUX signal is > 3 Vpp the signal is clipping. Than add a potentiometer of 47 kOhm between measuring point 8 and ground (measuring point 10) and adjust with that potentiometer until the RDMUX signal does not clip any more. F. Insert now a DCC blanc reference cassette (4822 397 30284). Put the set in record mode and make a recording of a random audio signal. G. Measure the peak-peak value of the write current between measuring point 9 and ground (measuring point 10). Note this Vclamp value. (Neglect the 4 negative pulses). This value of Vclamp is defined by: Vclamp = Iwrite x Rtot. (Rtot = Resistor value of shunt 3881, 3882, 3883, 3884 = 10 Ohm) Example:Vclamp = 1.2Vpp = 10 Ohm * Iwrite so Iwrite = 120 mA H. Make a recording with this current on a blanc (virgin; not recorded before) piece of the blanc reference tape. I. Play back the own recording and measure the average peak-peak level of the RDMUX signal on measuring point 3. Trigger oscilloscope again on the RDSYNC signal, measuring point 2. J. Calculate the desired write current via next formula: Vclamp (new)VppRDMUXoutput9.6kHzleveltapeVclamp (old) I(new) = - = - x - x C Rtot Vpp RDMUX output own recording Rtot where C is correctionfactor for 9.6 kHz cassette (+ 1.1 dB = 1.135). Example:VppRDMUX 9.6 kHz reads: 2.4Vpp VppRDMUX own recording: 2.3Vpp Results in desired write current of: Vclamp(new)2.4 Vpp 1.2 Vpp 1.25 Vpp I(new) == - x - x 1.135 =x 1.135 = Rtot2.3 VppRtot10 Ohm = 142 mA Corresponding with Vclamp (new) = 142 mA x 10 Ohm = 1.42 Vpp. K. Put the set in record mode again and adjust the write current with potentiometer 3888 to the calculated value = Vclamp (new). Measure between measuring point 9 and ground GNDD (measuring point 10) In the example: Vclamp = Iwrite x Rtot: Vclamp =142mA x 10 Ohm = 1.42 Vpp. Adjust with potentiometer 3888 to this value. L. Do not forget to remove, after the adjustment procedure, the short circuit between measuring point 7 and 10 again, because otherwise the AGC will not operate. In case potentiometer 47 kOhm has been added, this additional potentiometer should be removed too. REMARKS : This publication will be followed by a service information.
MODEL: DCC951
SYMPTOM: USE OF EDIT MODE
CURE: USE OF EDIT MODE When making a digital recording from CD player to DCC via CD dubbing (controlled by ESI), EDIT can be selected by most of the players e.g. CD931, CD940, CD911. CD951(CD950) doesn not have this feature and will always add 4 seconds AUTOSPACE in CD dubbing mode. When EDIT mode has been selected, the CD player indicates the tracks that will be recorded on side A and B depending on the selected tape length. When recording on an Analogue recorder, the recording will be made as indicated by the CD player. When on side A, the last possible track has been recorded, the CD player will come into the pause mode. The next track which will be recorded is displayed. At the end of the tape, the recorder head (automatic reverse), will switch to side B. The tape starts running and after 6 seconds the recording will continue. When recording digitally to DCC951, the way of recording is different. 1. CD911(CD94 program) The recorded CD of Peter Gabriel has 8 tracks with a total playing time of 45'48. In edit mode the CD player selects tracks 1-7 on side A, track 8 on side B. When track 7 has been recorded, the CD911 change over to pause with track 8 selected. The DCC951 writes a CONT. B marker on side A, the recorderhead will be reversed, and the recording will continue with track 8. In comparison with a recording on an analogue tape, a greater section of the tape will not be used. 2. CD931(= CD930, CD93 program) In edit mode, the CD player selects also tracks 1-7 on side A, track 8 on side B. When track 7 has been recorded, CD931 changes over to pause with track 8 selected. DCC951 continues the recording till end of side A. Then it rewinds to the last written marker, in this case startmarker of track 7, overwrites this marker by a CONT. B marker and continues recording of track 8 on side B, indicating recording track 7. When playing back the recorded tape, track 7 of the CD will not be audible, because it is marked by the CONT. B marker, forcing the tape to continue on side B. When recording without edit mode, all the 8 tracks will be recorded on side A, because the tape length (46) seems to be sufficient for this CD. When making a next recording of the same CD via APPEND, DCC starts the recording but when reaching the end of side A after 30, DCC rewinds to the written start marker of track 9, replaces it by a CONT.B marker, and recommences the recording of track 9 on side B. Recording of a CD without EDIT mode results in a better utilisation of the tape, no tracks will be lost. A peculiarity of DCC951 is that before the CD will be recorded a second time completely, DCC displays: TAPE FULL although one expects that enough space was left. This is caused by the procedure of calculating the used tape length. 3. CD951(= CD950, CD93 program) CD951 has no EDIT mode and in CD dubbing, an AUTOSPACE of 4 seconds will be added between the recorded tracks. This AUTOSPACE cannot be switched off. Analogue recorders need this 4 seconds gap for the FAST TRACK ACCESS feature. Before the recording of track 8 has been finished, the tape will reach the end of side A . DCC rewinds to startmarker of track 8, replaces it by a CONT. B marker and recommences the recording on side B. No tracks will be lost. The disadvantage of the 4 seconds AUTOSPACE is that when recording live recorded CD's, between tracks an undesired pause will be heard. This can only be solved by recording without CD Dubbing(CD SYNCRO OFF). Conclusion EDIT mode has no sense when recording digitally via CD Dubbing. When recording via CD dubbing without EDIT, the DCC recorder organises its own recording in an efficient way. Tracks interrupted by the end of side, will be repeated on the next side. This interruption is inaudible during play back. Using EDIT mode might result in a loss of the last track on side A by an inadequate software in the CD player(CD931), or in loss of tapespace(CD911). The EDIT feature is only useful for analogue recordings.
MODEL: DCC951
SYMPTOM: Customer problems when using DCC
CURE: Customer problems when using DCC In general playing back pre-recorded DCC-cassettes does not bring problems to users, because playback of such a cassette is more or less simular to operating a CD-player. A number of problems are found in the playing back and/or recording of the user-recorded DCC-cassettes, caused by not proper 'initializing' of ALL these cassettes. Initializing is important because this is closely linked to basic customer-expectations of a digital product: - Track number; - Time indication. The DCC-standard distinguishes 2 different formats of user-recorded DCC-tapes: a. Super-user format b. User format But there are also combinations of the 2 user-recorded formats possible: c. Combinations of the 2 formats. And there is the pre-recorded DCC tape format: d. Pre-recorded DCC SUMMARIZED CHARACTERISTICS: a. Super-user format: - continuous absolute time information available (remaining time is calculated by the set) - Track numbering and track title at start of track are possible. (this means that also renumber is possible) - Initialization required - TOC (Table of Contents) possible at start of track 1 For figures see Audio Service newsletter 63.01 On Display when super-user format is loaded at position a: TRACKTIME - -10:51 b. User format: - No continuous absolute time information available on tape - No track numbering/title. (this means that renumber is not possible) - No initialization required The start markers are only used for track access. On Display when user format is loaded at position b: TRACKTIME : Notice: track is blank! Some DCC typenumbers show counter settings, others the estimated time based on the tacho-signals. c. Combination of the 2 formats. - This format usually happens when the APPEND function is not used. - The APPEND function is designed to guarantee the Super-user format in case a recording is made at the end of a partially recorded tape. When a recording is started on a blank area, the result will always be a User-format. Correction by renumbering is not possible. d. Pre-recorded DCC - Continuous time information available (inclusive absolute time, track time, remaining time etc.) - Track information continuous available - TOC information continuous available - Track title information continuous available. - Display will show on what ever position loaded the track and time information. example: TRACKTIME 210:51
MODEL: DCC-General
SYMPTOM: Does not record sometimes on blank DCC tapes.
CURE: In case of interruptions in recorded music on a DCC D60 blank cassette, please check the concerned DCC cassette. In case the tape support plastic guiding part between tape and the take up reel is missing the D60 cassette is a defective one and causes the complaint. For details see next drawing. The set will operate normal with other cassettes. REMARKS: Production of D60 cassettes has been modified.
MODEL: DCC-General
SYMPTOM: Codenumber information
CURE: Codenumber information From now on Dolby testcassette MTT-150 is available with service codenumber 4822 397 30271. Also the Dolby testcassette TCC-130 has become a service ordernumber 4822 397 30269. With one of these cassettes the Dolby adjustment can be achieved.
MODEL: DSC950
SYMPTOM: Set switches on and off spontaneously.
CURE: Check whether capacitor 2649 is leaking (4822 121 42408).
MODEL: DSC950
SYMPTOM: Keyboard problem.
CURE: After power-on, all keys on the front are operational, but after pressing some keys, more and more keys do not react any more. SOLUTION: For existing sets, the problem can easily be solved by connecting pin 17 to ground. This can be done by soldering a short-circuit between pin 17 and 18 (pin 18 is grounded). From week 9341 and recognizing on serialnumber AH01..., in production the new software has been used and no hardware correction will be necessary any more. CAUSE : The problem is caused by pin 17 of the display processor (TMP47C670, position 7603) which is an unused keyscan input. This pin is not connected and receives disturbances due to the high input impedance.
MODEL: DSC950
SYMPTOM: Balance inoperative, sound level varies, no sound when changing source
CURE: Additional symptom: Set cannot be switched-on from stand-by. Solution: replace EEPROM (ST24CO2AB1; 4822 209 62098)
MODEL: DSC950
SYMPTOM: Short mutes audible.
CURE: CAUSE: In case DSS boxes are applied in a Audio set or in combination with DSC950 it may occur that through mains interferences a short mute is audible. (e.g. when the refrigerator switches-on). SOLUTION: Replace the mains cords of the 70DSS930 boxes by a new mainscord. In this new mainscord a anti-interference filter has been built-in. In case that a DSC950 has been used, this mainscord has to be replaced too. For ease of replacement, it is advised to replace the bushing and housing too. service codenumber new mainscord 4822 321 11035 service codenumber bushing 4822 532 12271 service codenumber housing 4822 268 40481
MODEL: DSC950
SYMPTOM: No CD digital input.
CURE: Check the optical input converter for CD and the optical reader pos. 1960.
MODEL: DSC950
SYMPTOM: Sometimes no sound on DCC analog in.
CURE: Check optical input 1961 (DCC).
MODEL: DSC950
SYMPTOM: No sound when using the analog inputs.
CURE: Check capacitor 2773.
MODEL: DSC950
SYMPTOM: IC PCF3523P no longer available
CURE: IC PCF3523P no longer available - Audio Digital Output Circuit (ADOC) IC PCF3523P is now no longer available.A direct replacement is type PCF2705P which is supplied under the same code number 4822 209 62588.
MODEL: DSC950
SYMPTOM: Test CD Dolby Surround 4822 395 10216
CURE: Test CD Dolby Surround 4822 395 10216 - Dolby Surround sound is more and more included in todays Audio equipment. To measure specifications and to test Dolby Pro Logic equipment and circuitry Philips developed a test CD for this purpose. Below please find the composition of tracks together with a short description of the application. Track 1: Voice track to identify channels left, centre, right and surround to check speaker connections Track 2: 1kHz tone for electrical balance setting L/R, Centre/Surround Track 3..6:Test signals from 20Hz to 20kHz to measure frequency response, harmonic distortion, signal-to-noise ratio and channel separation for each channel. Track 7..12: Test signals from 20Hz to 20kHz, max. 0dB CD level, to check headroom for visible clipping for each channel. Track 13:Unmodulated track during 30 sec. to measure S/N ratio Track 14:Test signals from 100Hz to 7kHz to check the modified Dolby B-type noise reduction decode characteristics in Surround channel Track 15.23: Test signals of 20Hz to 20kHz to enable distortion measurements on all four channels at the same time Track 24:Tone bursts of 1kHz during 1msec. to check the time delay of the surround channel output Track 25:Signal of 8.3 kHz to check time delay in surround channel by means of Lisajous phase test Track 26:Not correlated noise on all four channels to test temperature behaviour of output amplifiers Track 27:Pink noise repeated in sequence L->C->R->S->L->C, etc. to simulate the noise sequencer in the decoder to enable the user to match speaker levels for proper system balance Track 28.34: Dolby Surround recorded music tracks to experience Surround sound effect. Dolby Pro Logic Test CD is available with service code 4822 395 10216. REMARKS : Service Information A96-450 (service code 4822 725 23980) describes the various tests to perform to check and measure. Dolby Pro Logic equipment by using above mentioned test CD. A96-450 is an add-on to existing service manuals of Dolby Surround equipment.
MODEL: DSS930
SYMPTOM: No sound at all.
CURE: Check the DSP chip item 7550.
MODEL: DSS930
SYMPTOM: Short mutes audible.
CURE: CAUSE: In case DSS boxes are applied in a Audio set or in combination with DSC950 it may occur that through mains interferences a short mute is audible. (e.g. when the refrigerator switches-on). SOLUTION: Replace the mains cords of the 70DSS930 boxes by a new mainscord. In this new mainscord a anti-interference filter has been built-in. In case that a DSC950 has been used, this mainscord has to be replaced too. For ease of replacement, it is advised to replace the bushing and housing too. service codenumber new mainscord 4822 321 11035 service codenumber bushing 4822 532 12271 service codenumber housing 4822 268 40481
MODEL: DSS930
SYMPTOM: The speaker relay for the woofer endstage inoperative.
CURE: Check transistor T7259 (BF457; 5322 130 44413).
MODEL: DSS930
SYMPTOM: Totally inoperative.
CURE: Check whether BU1405 (dig. in/out) has been soldered well.
MODEL: DSS940
SYMPTOM: Codenumber information
CURE: Codenumber information IC7600 DSP56004FJ40, codenumber is 4822 209 52726
MODEL: F1275
SYMPTOM: Partslist
CURE: Partslist - Leverknob 505 (503 for FCD185) has servicecodenumber 4822 404 21069.
MODEL: F1395
SYMPTOM: Correction
CURE: Correction The service order number of loudspeaker socket pos 1317 should read 4822 267 31176 instead of 4822 267 20371.
MODEL: F1395
SYMPTOM: Partslist
CURE: Partslist - The codenumber for the Remote Control is : 9 functions4822 218 10242 14 functions 4822 218 10243
MODEL: F1395
SYMPTOM: Part number of IC TDA1602B
CURE: Part number of IC TDA1602B Some of the above sets were produced with an IC type TDA1602B in position 7701.It is not possible to replace this version with a TDA1602/N1E listed in the service manual under code number 4822 209 72747. The part number of a TDA1602B is 4822 209 61424.
MODEL: F1472
SYMPTOM: Correction mechanical tape deck partslist
CURE: Correction mechanical tape deck partslist - The codenumber mentioned for item M32 is wrong, this should read 4822 410 26352.
MODEL: F1722
SYMPTOM: Crackling sound on FM
CURE: Replace capacitor 242847uf
MODEL: F330
SYMPTOM: Tape deck display erratic; Tape deck functions OK.
CURE: All characters on display constantly changing and some permanently lit. Check -25 volt line. If this voltage is at -40 volts and the AC filament voltage to the display is high, check/replace T7294 - BD136.
MODEL: F4213
SYMPTOM: Parts
CURE: Parts - The service codenumber for amplifier IC STK2139 is 4822 209 63459.
MODEL: FA080
SYMPTOM: Too much distortion in right channel at DSP modes
CURE: Replace resistor R3543 by a resistor of 11.7 Kohm instead of 10K.
MODEL: FA080
SYMPTOM: Sometimes no sound on right speaker.
CURE: Replace connector block 1267 (4822 290 61102)
MODEL: FA080
SYMPTOM: The amplifier does not switch on.
CURE: EEPROM IC7684 defective. Replace IC7684.
MODEL: FA091
SYMPTOM: Right channel inoperative.
CURE: Check the speaker relay L5250 (4822 280 70368).
MODEL: FA279
SYMPTOM: Amplifier reacts on CD-i remote control commands.
CURE: Replace in those cases the remote control receiver, item IR01, instead of the published codenumber (4822 218 10292) by another remote control receiver, available with service codenumber: 4822 214 52184.
MODEL: FA320
SYMPTOM: Orange and green sockets on PHILIPS AUDIO sets
CURE: Orange and green sockets on PHILIPS AUDIO sets 1) ORANGE cinch Socket/plug This orange cinch socket is called RC5 bus and carries RC5 messages. Sets equipped with this RC5 bus can receive remote control commands (RC5) from another set via this socket. If these sets have an IR-receptor, they will also output all RC5 codes which have been received on the IR-receptor. An RC5 extender (e.g. a pyramid EM2200) can be connected via this socket, if the set has no internal IR-receptor. 2) GREEN cinch socket/plug * 300 series family sets Examples: FA320, FR380, ... This bus is called EASYLINK and carries both RC5 messages and special RC5 strings. Sets with an IR-receptor do not transmit any received RC5 code via this green socket. These sets can also receive RC5 codes, e.g. from sets with an ORANGE socket or from a pyramid. However, they transmit RC5 strings for inter-set purposes. These codes have an RC5 like structure and can mislead non-300 series sets, so care must be taken if these sets are connected to non-300 series sets. * All other sets (900 series amplifiers like 70FA910, 70FA920, 70FA930 and HiFi Mini system amplifiers FR60, FR70, FA80). This bus is called ESI (in 900 series) or EASYLOGIC (in mini systems). This bus carries Enhanced Easylink messages. This ESI bus is incompatible with the green socket of the 300 series. Almost all amplifiers which carry a GREEN socket have also an ORANGE socket. RC5 code can enter via the ORANGE socket or via the IR-receptor and will be translated to the GREEN socket in Enhanced Easylink format. In this way, some compatibility is guaranteed. COMBINING SETS OF DIFFERENT FAMILIES - General If sets of different families are combined, system functionality like CD-synchro, auto-select and timer functions will never work. For compatibility, most amplifiers/receivers are equipped with the orange socket. 1. Adding a loose CD-player, tuner or tapedeck recorder with an ESI bus to a 200, 600 or 800 series or older system equipped with ORANGE sockets. In case the set has no internal IR-receptor: connect the orange socket of new set to the orange socket of the amplifier. In case the new set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-, 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 200-, 600- or 800- series. 2. Adding a loose CD-player, tuner or tapedeck recorder to a 300-series system. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 300- series. Important: do not connect green sockets: they carry different protocols. 3. Adding a loose CD-player, tuner or tapedeck recorder to a 900 system or HiFi mini system FR60, FR70 or FA80. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-series sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 900- series and mini HiFi sets. Important: do not connect green busses: they carry different protocols.
MODEL: FA761
SYMPTOM: TOTAL INOPERATIVE, NO +5V OUTPUT AT IC501
CURE: FUSE SI6 DEFECTIVE. (315MA SOLDER TYPE0
MODEL: FA775
SYMPTOM: Service Manual Additioned to partslist
CURE: Service Manual Additioned to partslist: - Switch SR16 is available via service codenumber 4822 276 11933. REMARKS : This is a correction of newsletter 25.17
MODEL: FA80
SYMPTOM: Orange and green sockets on PHILIPS AUDIO sets
CURE: Orange and green sockets on PHILIPS AUDIO sets 1) ORANGE cinch Socket/plug This orange cinch socket is called RC5 bus and carries RC5 messages. Sets equipped with this RC5 bus can receive remote control commands (RC5) from another set via this socket. If these sets have an IR-receptor, they will also output all RC5 codes which have been received on the IR-receptor. An RC5 extender (e.g. a pyramid EM2200) can be connected via this socket, if the set has no internal IR-receptor. 2) GREEN cinch socket/plug * 300 series family sets Examples: FA320, FR380, ... This bus is called EASYLINK and carries both RC5 messages and special RC5 strings. Sets with an IR-receptor do not transmit any received RC5 code via this green socket. These sets can also receive RC5 codes, e.g. from sets with an ORANGE socket or from a pyramid. However, they transmit RC5 strings for inter-set purposes. These codes have an RC5 like structure and can mislead non-300 series sets, so care must be taken if these sets are connected to non-300 series sets. * All other sets (900 series amplifiers like 70FA910, 70FA920, 70FA930 and HiFi Mini system amplifiers FR60, FR70, FA80). This bus is called ESI (in 900 series) or EASYLOGIC (in mini systems). This bus carries Enhanced Easylink messages. This ESI bus is incompatible with the green socket of the 300 series. Almost all amplifiers which carry a GREEN socket have also an ORANGE socket. RC5 code can enter via the ORANGE socket or via the IR-receptor and will be translated to the GREEN socket in Enhanced Easylink format. In this way, some compatibility is guaranteed. COMBINING SETS OF DIFFERENT FAMILIES - General If sets of different families are combined, system functionality like CD-synchro, auto-select and timer functions will never work. For compatibility, most amplifiers/receivers are equipped with the orange socket. 1. Adding a loose CD-player, tuner or tapedeck recorder with an ESI bus to a 200, 600 or 800 series or older system equipped with ORANGE sockets. In case the set has no internal IR-receptor: connect the orange socket of new set to the orange socket of the amplifier. In case the new set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-, 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 200-, 600- or 800- series. 2. Adding a loose CD-player, tuner or tapedeck recorder to a 300-series system. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 300- series. Important: do not connect green sockets: they carry different protocols. 3. Adding a loose CD-player, tuner or tapedeck recorder to a 900 system or HiFi mini system FR60, FR70 or FA80. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-series sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 900- series and mini HiFi sets. Important: do not connect green busses: they carry different protocols.
MODEL: FA910
SYMPTOM: Orange and green sockets on PHILIPS AUDIO sets
CURE: Orange and green sockets on PHILIPS AUDIO sets 1) ORANGE cinch Socket/plug This orange cinch socket is called RC5 bus and carries RC5 messages. Sets equipped with this RC5 bus can receive remote control commands (RC5) from another set via this socket. If these sets have an IR-receptor, they will also output all RC5 codes which have been received on the IR-receptor. An RC5 extender (e.g. a pyramid EM2200) can be connected via this socket, if the set has no internal IR-receptor. 2) GREEN cinch socket/plug * 300 series family sets Examples: FA320, FR380, ... This bus is called EASYLINK and carries both RC5 messages and special RC5 strings. Sets with an IR-receptor do not transmit any received RC5 code via this green socket. These sets can also receive RC5 codes, e.g. from sets with an ORANGE socket or from a pyramid. However, they transmit RC5 strings for inter-set purposes. These codes have an RC5 like structure and can mislead non-300 series sets, so care must be taken if these sets are connected to non-300 series sets. * All other sets (900 series amplifiers like 70FA910, 70FA920, 70FA930 and HiFi Mini system amplifiers FR60, FR70, FA80). This bus is called ESI (in 900 series) or EASYLOGIC (in mini systems). This bus carries Enhanced Easylink messages. This ESI bus is incompatible with the green socket of the 300 series. Almost all amplifiers which carry a GREEN socket have also an ORANGE socket. RC5 code can enter via the ORANGE socket or via the IR-receptor and will be translated to the GREEN socket in Enhanced Easylink format. In this way, some compatibility is guaranteed. COMBINING SETS OF DIFFERENT FAMILIES - General If sets of different families are combined, system functionality like CD-synchro, auto-select and timer functions will never work. For compatibility, most amplifiers/receivers are equipped with the orange socket. 1. Adding a loose CD-player, tuner or tapedeck recorder with an ESI bus to a 200, 600 or 800 series or older system equipped with ORANGE sockets. In case the set has no internal IR-receptor: connect the orange socket of new set to the orange socket of the amplifier. In case the new set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-, 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 200-, 600- or 800- series. 2. Adding a loose CD-player, tuner or tapedeck recorder to a 300-series system. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 300- series. Important: do not connect green sockets: they carry different protocols. 3. Adding a loose CD-player, tuner or tapedeck recorder to a 900 system or HiFi mini system FR60, FR70 or FA80. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-series sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 900- series and mini HiFi sets. Important: do not connect green busses: they carry different protocols.
MODEL: FA910
SYMPTOM: ESI-bus
CURE: ESI-bus - For detailed information see Newsletter 62 where this description of the commanding structure of the ESI-bus together with drawings has been given. Introduction All sets of the Philips 900 series use a new communication bus, called ESI. This is a green cinch bus and can be found at the back of each set. In fact, each set carries two busses for looping through (they are internally connected). The bus is basically used for two purposes: * All RC5 commands (infrared) which are received by the IR-receptor of the amplifier are converted to the ESI-format and passed via the ESI-bus to all other sets. This is called the ESI mode 0 format. * Inter-set communication for following system functionality: - automatic source selection - timer functions - CD®dubbing - ... The ESI-standard is company confidential. However, mode 0 has been declared public domain. This information can be used freely as long as it is used to control 900 series equipment. The bus shall not be used to build other applications for private or commercial purpose. The Hardware interface circuit is presented in Newsletter 62. This hardware interface connects at one side the computer. At the other side, connection is made to the 900 set(s). In idle state, the ESI bus carries 0V. Whenever commands are transferred, the bus switches between 0 and 5V. Commands are transmitted in biphase coding. This means that the bit value is represented by an upgoing or downgoing edge in the middle of the bit slot. Each bit is 889 microsec. In a normal system, all original RC5 information (from the transmitted IR-command) is copied into the mode 0 command by the amplifier. The ESI format and the List of RC5 commands in 900 series equipment are shown in newsletter 62.
MODEL: FA920
SYMPTOM: Break down of power endstages
CURE: In order to prevent a quick break down of the powertansistors the following modification has to be executed in each set brought in for repair. Short circuit coil 5252 (right) and coil 5253 (left channel). Service information A93-452 (Add elcap 2301, 2302) has to be executed too, in case this modification has not yet been implemented. REMARKS: This publication will be followed by service information
MODEL: FA920
SYMPTOM: No sound. The speaker relay does not switch on.
CURE: Endstage transistors T7269 ,7275 and the 5AT fuses might be defective. replace TS7269 code number 4822 130 62963 TS7275 code number 4822 130 63073 Fuse 5AT code number 4822 071 55002
MODEL: FA920
SYMPTOM: Orange and green sockets on PHILIPS AUDIO sets
CURE: Orange and green sockets on PHILIPS AUDIO sets 1) ORANGE cinch Socket/plug This orange cinch socket is called RC5 bus and carries RC5 messages. Sets equipped with this RC5 bus can receive remote control commands (RC5) from another set via this socket. If these sets have an IR-receptor, they will also output all RC5 codes which have been received on the IR-receptor. An RC5 extender (e.g. a pyramid EM2200) can be connected via this socket, if the set has no internal IR-receptor. 2) GREEN cinch socket/plug * 300 series family sets Examples: FA320, FR380, ... This bus is called EASYLINK and carries both RC5 messages and special RC5 strings. Sets with an IR-receptor do not transmit any received RC5 code via this green socket. These sets can also receive RC5 codes, e.g. from sets with an ORANGE socket or from a pyramid. However, they transmit RC5 strings for inter-set purposes. These codes have an RC5 like structure and can mislead non-300 series sets, so care must be taken if these sets are connected to non-300 series sets. * All other sets (900 series amplifiers like 70FA910, 70FA920, 70FA930 and HiFi Mini system amplifiers FR60, FR70, FA80). This bus is called ESI (in 900 series) or EASYLOGIC (in mini systems). This bus carries Enhanced Easylink messages. This ESI bus is incompatible with the green socket of the 300 series. Almost all amplifiers which carry a GREEN socket have also an ORANGE socket. RC5 code can enter via the ORANGE socket or via the IR-receptor and will be translated to the GREEN socket in Enhanced Easylink format. In this way, some compatibility is guaranteed. COMBINING SETS OF DIFFERENT FAMILIES - General If sets of different families are combined, system functionality like CD-synchro, auto-select and timer functions will never work. For compatibility, most amplifiers/receivers are equipped with the orange socket. 1. Adding a loose CD-player, tuner or tapedeck recorder with an ESI bus to a 200, 600 or 800 series or older system equipped with ORANGE sockets. In case the set has no internal IR-receptor: connect the orange socket of new set to the orange socket of the amplifier. In case the new set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-, 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 200-, 600- or 800- series. 2. Adding a loose CD-player, tuner or tapedeck recorder to a 300-series system. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 300- series. Important: do not connect green sockets: they carry different protocols. 3. Adding a loose CD-player, tuner or tapedeck recorder to a 900 system or HiFi mini system FR60, FR70 or FA80. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-series sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 900- series and mini HiFi sets. Important: do not connect green busses: they carry different protocols.
MODEL: FA920
SYMPTOM: Preventive action
CURE: Preventive action - In case of a defective amplifier, replace also pos. 3284 and 3285; These resistors can be the cause of the too high quiescent current. Pot. 470E ( pos. 3284 And 3285) 4822 101 10927
MODEL: FA920
SYMPTOM: ESI-bus
CURE: ESI-bus - For detailed information see Newsletter 62 where this description of the commanding structure of the ESI-bus together with drawings has been given. Introduction All sets of the Philips 900 series use a new communication bus, called ESI. This is a green cinch bus and can be found at the back of each set. In fact, each set carries two busses for looping through (they are internally connected). The bus is basically used for two purposes: * All RC5 commands (infrared) which are received by the IR-receptor of the amplifier are converted to the ESI-format and passed via the ESI-bus to all other sets. This is called the ESI mode 0 format. * Inter-set communication for following system functionality: - automatic source selection - timer functions - CD®dubbing - ... The ESI-standard is company confidential. However, mode 0 has been declared public domain. This information can be used freely as long as it is used to control 900 series equipment. The bus shall not be used to build other applications for private or commercial purpose. The Hardware interface circuit is presented in Newsletter 62. This hardware interface connects at one side the computer. At the other side, connection is made to the 900 set(s). In idle state, the ESI bus carries 0V. Whenever commands are transferred, the bus switches between 0 and 5V. Commands are transmitted in biphase coding. This means that the bit value is represented by an upgoing or downgoing edge in the middle of the bit slot. Each bit is 889 microsec. In a normal system, all original RC5 information (from the transmitted IR-command) is copied into the mode 0 command by the amplifier. The ESI format and the List of RC5 commands in 900 series equipment are shown in newsletter 62.
MODEL: FA920
SYMPTOM: Spare part information
CURE: Spare part information Loudspeaker terminals are available with service codenumber 4822 267 20432.
MODEL: FA930
SYMPTOM: Fuses 1252 and 1253 broken; No other fault found in set.
CURE: CAUSE: Depending on the applied boxes, the impedance falls below approx. 2 ohm at high audio frequencies (approx. 30kHz....50kHz). This results in broken fuses. SOLUTION: Add two capacitors of 100pF/50V across collector and emitter of transistor 7272 right channel and transistor 7273 left channel. Service codenumber capacitor reads 100pF/50V (4822 122 33195). Short circuit coil 5252 (right) and coil 5253 (left channel). This modification has to be performed in each set, brought in for repair. Service information A93-453 (Add el cap 2301, 2302) has to be executed too, in case this modification has not been implemented yet. REMARKS : This publication will be followed by a service information
MODEL: FA930
SYMPTOM: Mains transformer temperature fuse is defective.
CURE: It seems to be impossible to solve this problem in this typenumber/modelnumber because of the extreme situations which can be applied such like loudspeakerboxes of 4 Ohm and playback housemusic on high volume during a rather long time. In the successor of this model (FA931) a circuitry to protect the set has been added: This circuit is continuously checking the power from the transformer and will decrease the output in case the transformer power is exceeding a certain level. (Fuzzy logic)
MODEL: FA930
SYMPTOM: Sound interrupts, defective volume control
CURE: Remove the notch from the volume control PCB. This removes mechanical tension on the connector and gives a better contact.
MODEL: FA930
SYMPTOM: No source selection (all leds are burning).
CURE: Check the microprocessor IC7650 (4822 209 30881).
MODEL: FA930
SYMPTOM: ESI-bus
CURE: ESI-bus - For detailed information see Newsletter 62 where this description of the commanding structure of the ESI-bus together with drawings has been given. Introduction All sets of the Philips 900 series use a new communication bus, called ESI. This is a green cinch bus and can be found at the back of each set. In fact, each set carries two busses for looping through (they are internally connected). The bus is basically used for two purposes: * All RC5 commands (infrared) which are received by the IR-receptor of the amplifier are converted to the ESI-format and passed via the ESI-bus to all other sets. This is called the ESI mode 0 format. * Inter-set communication for following system functionality: - automatic source selection - timer functions - CD®dubbing - ... The ESI-standard is company confidential. However, mode 0 has been declared public domain. This information can be used freely as long as it is used to control 900 series equipment. The bus shall not be used to build other applications for private or commercial purpose. The Hardware interface circuit is presented in Newsletter 62. This hardware interface connects at one side the computer. At the other side, connection is made to the 900 set(s). In idle state, the ESI bus carries 0V. Whenever commands are transferred, the bus switches between 0 and 5V. Commands are transmitted in biphase coding. This means that the bit value is represented by an upgoing or downgoing edge in the middle of the bit slot. Each bit is 889 microsec. In a normal system, all original RC5 information (from the transmitted IR-command) is copied into the mode 0 command by the amplifier. The ESI format and the List of RC5 commands in 900 series equipment are shown in newsletter 62.
MODEL: FA930
SYMPTOM: Orange and green sockets on PHILIPS AUDIO sets
CURE: Orange and green sockets on PHILIPS AUDIO sets 1) ORANGE cinch Socket/plug This orange cinch socket is called RC5 bus and carries RC5 messages. Sets equipped with this RC5 bus can receive remote control commands (RC5) from another set via this socket. If these sets have an IR-receptor, they will also output all RC5 codes which have been received on the IR-receptor. An RC5 extender (e.g. a pyramid EM2200) can be connected via this socket, if the set has no internal IR-receptor. 2) GREEN cinch socket/plug * 300 series family sets Examples: FA320, FR380, ... This bus is called EASYLINK and carries both RC5 messages and special RC5 strings. Sets with an IR-receptor do not transmit any received RC5 code via this green socket. These sets can also receive RC5 codes, e.g. from sets with an ORANGE socket or from a pyramid. However, they transmit RC5 strings for inter-set purposes. These codes have an RC5 like structure and can mislead non-300 series sets, so care must be taken if these sets are connected to non-300 series sets. * All other sets (900 series amplifiers like 70FA910, 70FA920, 70FA930 and HiFi Mini system amplifiers FR60, FR70, FA80). This bus is called ESI (in 900 series) or EASYLOGIC (in mini systems). This bus carries Enhanced Easylink messages. This ESI bus is incompatible with the green socket of the 300 series. Almost all amplifiers which carry a GREEN socket have also an ORANGE socket. RC5 code can enter via the ORANGE socket or via the IR-receptor and will be translated to the GREEN socket in Enhanced Easylink format. In this way, some compatibility is guaranteed. COMBINING SETS OF DIFFERENT FAMILIES - General If sets of different families are combined, system functionality like CD-synchro, auto-select and timer functions will never work. For compatibility, most amplifiers/receivers are equipped with the orange socket. 1. Adding a loose CD-player, tuner or tapedeck recorder with an ESI bus to a 200, 600 or 800 series or older system equipped with ORANGE sockets. In case the set has no internal IR-receptor: connect the orange socket of new set to the orange socket of the amplifier. In case the new set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-, 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 200-, 600- or 800- series. 2. Adding a loose CD-player, tuner or tapedeck recorder to a 300-series system. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 900- series and mini sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 300- series. Important: do not connect green sockets: they carry different protocols. 3. Adding a loose CD-player, tuner or tapedeck recorder to a 900 system or HiFi mini system FR60, FR70 or FA80. In case the set has no internal IR-receptor: connect the orange socket to the orange socket of the amplifier. In case the set has an internal IR-receptor: do not connect any bus. NOTE: As the 300-series sets have no orange sockets they CAN NOT BE CONNECTED with sets from the 900- series and mini HiFi sets. Important: do not connect green busses: they carry different protocols.
MODEL: FA930
SYMPTOM: Preventive action
CURE: Preventive action - In case of a defective amplifier, replace also pos. 3284 and 3285; These resistors can be the cause of the too high quiescent current. Pot. 470E ( pos. 3284 And 3285) 4822 101 10927
MODEL: FA930
SYMPTOM: New feature
CURE: New feature - The remote control for these sets is extended with the one digit/ two digit function; key (-/). This should be used to control a TV set. This feature is implemented in RH6641/01 available with service codenumber 4822 218 10514.
MODEL: FA931
SYMPTOM: No low frequencies in the audio signal.
CURE: Check soldering of transistors T7270/T72771.
MODEL: FA931
SYMPTOM: Sound interrupts, defective volume control
CURE: Remove the notch from the volume control PCB. This removes mechanical tension on the connector and gives a better contact.
MODEL: FA931
SYMPTOM: The amplifier is totally inoperative.
CURE: Check/replace capacitor C2664 in the reset circuit.
MODEL: FA931
SYMPTOM: New feature
CURE: New feature - The remote control for these sets is extended with the one digit/ two digit function; key (-/). This should be used to control a TV set. This feature is implemented in RH6641/01 available with service codenumber 4822 218 10514.
MODEL: FA931
SYMPTOM: ESI-bus
CURE: ESI-bus - For detailed information see Newsletter 62 where this description of the commanding structure of the ESI-bus together with drawings has been given. Introduction All sets of the Philips 900 series use a new communication bus, called ESI. This is a green cinch bus and can be found at the back of each set. In fact, each set carries two busses for looping through (they are internally connected). The bus is basically used for two purposes: * All RC5 commands (infrared) which are received by the IR-receptor of the amplifier are converted to the ESI-format and passed via the ESI-bus to all other sets. This is called the ESI mode 0 format. * Inter-set communication for following system functionality: - automatic source selection - timer functions - CD®dubbing - ... The ESI-standard is company confidential. However, mode 0 has been declared public domain. This information can be used freely as long as it is used to control 900 series equipment. The bus shall not be used to build other applications for private or commercial purpose. The Hardware interface circuit is presented in Newsletter 62. This hardware interface connects at one side the computer. At the other side, connection is made to the 900 set(s). In idle state, the ESI bus carries 0V. Whenever commands are transferred, the bus switches between 0 and 5V. Commands are transmitted in biphase coding. This means that the bit value is represented by an upgoing or downgoing edge in the middle of the bit slot. Each bit is 889 microsec. In a normal system, all original RC5 information (from the transmitted IR-command) is copied into the mode 0 command by the amplifier. The ESI format and the List of RC5 commands in 900 series equipment are shown in newsletter 62.
MODEL: FA931
SYMPTOM: Correction
CURE: Correction In the Service Manual of FA931 (4822 725 23964) is a wrong Power diagram on page 20-21-22 is published. REMARKS : With Service Information A94-450 (4822 725 23975) the correct one will be published.
MODEL: FA940
SYMPTOM: Sound interrupts, defective volume control
CURE: Remove the notch from the volume control PCB. This removes mechanical tension on the connector and gives a better contact.
MODEL: FA950
SYMPTOM: DC on the speaker terminals.
CURE: 2 or 3 volt DC on the speaker terminals: Replace C267 and C268 ( 220uF ) near Q271 ( AN7062P)
MODEL: FA950
SYMPTOM: Led for speaker group A inoperative.
CURE: Short circuit on speaker led. (4822 130 62954). Resolder Cinch bush 562 connections.
MODEL: FA950
SYMPTOM: Digital LED does not light-up if a DCC is connected.
CURE: Modify the circuit on the digital input board P032 as follows: Open the ground-connection of pin 3 of IC Q403. Connect this pin 3 to pin 5 and 9 of the same IC Q403. Add a capacitor of 330pF between pin 4 of IC Q403 and the anode of D401. REMARKS : The circuit has been modified in the sets from productionweek 9317 onwards.
MODEL: FA950
SYMPTOM: The powerstages of the amplifier
CURE: The powerstages of the amplifier are not in accordance with the service manual. - Some resistors are added and other resistors are changed in value. Resistors R373, R374, R375 and R376, 100 ohm 5% 1/6W each (4822 052 10101), are addedon the power amplifier PCB. R373 has been added between collector Q279 and -64.7V R374 has been added between collector Q280 and -64.7V R375 has been added between collector Q281 and +64.9V R376 has been added between collector Q282 and +64.9V The reason of the above mentioned changment is to prevent a small parasitic oscillation that may occur. R325, R326, R327, R328, R333, R334 are mentioned in the circuit diagram as 47E but in the set 100E (4822 115 90167) has been built in. The effect that resistors R365, 366, 367, 368 (6k8, 1/2W) become hot after a few minutes can be due to the start-up behaviour of this set. It takes about 6-10 minutes till the powerstage is stabilized even in stand-by mode. WHEN REPLACING THE POWERSTAGE HEAT-COMPOUND HAS TO BE ADDED BETWEEN THE TRANSISTORS AND THE ISOLATION SHEET AND BETWEEN THE SHEET AND THE HEAT-SINK.. THE ADJUSTMENT OF THE QUIESCENT CURRENT HAS TO BE DONE IN THE FOLLOWING WAY:- ADJUST THE TRIMPOTS R323 AND R324 FULL COUNTER CLOCKWISE. CONNECT DC VOLTMETER ACROSS R337 AND R338 SEPARATELY.SWITCH ON POWER-SUPPLY AND SET TO STAND-BY MODE, WAIT FOR MORE THAN 6 MINUTES.NOW ADJUST SLOWLY STEP BY STEP THE CURRENT IN BOTH CHANNELS WITH R323 AND R324 TILL THE VOLTMETER READING IS 13 mV +/- 1 mV.
MODEL: FA950
SYMPTOM: Electrical partslist correction
CURE: Electrical partslist correction - - 2SB1353A in Service Manual 4822 130 62334 should be 4822 130 63117 - 2SD2033A in Service Manual 4822 130 62335 should be 4822 130 63118 Note: With 4822 130 62334,2SB1353 will be delivered. With 4822 130 62335,2SD2033 will be delivered.
MODEL: FA951
SYMPTOM: The amplifier acts strange, changes from source and volume.
CURE: Check micro controller IC7650
MODEL: FA951
SYMPTOM: After some time the amplifier can not be operated anymore.
CURE: Check/replace uP.
MODEL: FA951
SYMPTOM: No sound. The speaker relay does not switch on.
CURE: Endstage transistors T7268 (T7269), T7274 (7275) and the 5AT fuses might be defective. Replace: T7268 (T7269) code number 4822 130 62963 T7274 (T7275) code number 4822 130 63073 Fuse 5ATcode number 4822 071 55002
MODEL: FA951
SYMPTOM: The amplifier goes into protection.
CURE: Check/replace D6306.
MODEL: FA951
SYMPTOM: The amplifier produces a distorted sound and switches in protection
CURE: Check/replace F1252, F1253, D6265 and D6267.
MODEL: FB209W/17
SYMPTOM: Modification
CURE: Modification From week 9840 onwards, the mains cord is changed from 4822 321 10882 to 4822 321 11466 to meet new UL requirement for USA/Canada effective from December 1998.
MODEL: FB560
SYMPTOM: Service Manual
CURE: Service Manual For above-mentioned loudspeaker system no Service Manual has been published. The FB560 loudspeaker system consists of the loudspeaker boxes: * FB561 (front) * FB562 (center) * FB563 (surround) The following spare parts are available: Service code ArticleImpedance Application description 4822 240 10085 Woofer 5 1/4 12 OhmFB561 4822 240 10088 Tweeter8 OhmFB561 4822 240 10086 Woofer 4 12 OhmFB562 4822 240 10088 Tweeter8 OhmFB562 4822 240 10087 Full range 5 1/46 OhmFB563
MODEL: FB695
SYMPTOM: Service hints
CURE: Service hints - For loudspeakerbox produced before week 9545 and brought in for repair of a defective tweeter AD11401/T6 (4822 240 70223), it is necessary to add a tweeter protection circuit in the wire to the tweeter. See drawings, newsletter 96.01.10 and service information A95-101 (4822 725 24783). The extra components are: R = resistor 5R65Watt (4822 053 32568) PTC = PTC RXE040 (4822 116 40264) In boxes produced from week 9545 and onwards, this protection circuit has already been implemented. From week 9606 onwards the protection circuit has been integrated on the filter unit. (4822 214 51297) itemservice codedescription 50014822 157 62595air coil 330 uH 50024822 157 62596ferrite coil 820 uH 20014822 124 21436bipolar capacitor 4u7 100VDC 30014822 116 82638Resistor 5R6 - 25 Watt 30024822 053 32568resistor 5R6 - 5 Watt 31014822 116 40201PTC RXE135 31024822 116 40264PTC RXE040 REMARKS : This modification should be applied in each box FB695 and FB696 offered for repair. This publication will be followed by Service Information A95-101
MODEL: FB696
SYMPTOM: Service hints
CURE: Service hints - For loudspeakerbox produced before week 9545 and brought in for repair of a defective tweeter AD11401/T6 (4822 240 70223), it is necessary to add a tweeter protection circuit in the wire to the tweeter. See drawings, newsletter 96.01.10 and service information A95-101 (4822 725 24783). The extra components are: R = resistor 5R65Watt (4822 053 32568) PTC = PTC RXE040 (4822 116 40264) In boxes produced from week 9545 and onwards, this protection circuit has already been implemented. From week 9606 onwards the protection circuit has been integrated on the filter unit. (4822 214 51297) itemservice codedescription 50014822 157 62595air coil 330 uH 50024822 157 62596ferrite coil 820 uH 20014822 124 21436bipolar capacitor 4u7 100VDC 30014822 116 82638Resistor 5R6 - 25 Watt 30024822 053 32568resistor 5R6 - 5 Watt 31014822 116 40201PTC RXE135 31024822 116 40264PTC RXE040 REMARKS : This modification should be applied in each box FB695 and FB696 offered for repair. This publication will be followed by Service Information A95-101
MODEL: FC070
SYMPTOM: Deck A does not play. Wind & rewind function O.K.
CURE: Check transistor T7642 (in solenoid driver circuit) (BC858B) 5322 130 41983.
MODEL: FC070
SYMPTOM: Set switches off after some time (After the set is warming up).
CURE: Processor IC7683 temperature dependent. After warming up it resets itself. Replace IC7683. (4822 209 31591)
MODEL: FC070
SYMPTOM: Cassette lid does not close
CURE: Eject locking arm has passed the eject hook.Caused by pushing the eject button and the play button simultaneously. Remount the eject locking arm.
MODEL: FC080
SYMPTOM: Deck gives a short ticking sound. No deck functions.
CURE: Lever pos 55 (deck B) might be out of position. Remount pos. 55.
MODEL: FC260
SYMPTOM: Partslist correction
CURE: Partslist correction Service codenumber for IC HEF4066BP should read 5322 209 10357 instead of 4822 209 73092.
MODEL: FC260
SYMPTOM: Manual
CURE: Manual In the partslist, the codenumber for MC14066BCP/HEF4066BP is not correct. The codenumber should read 5322 209 10357. In the partslist, the codenumber for transistor BC636 has not been mentioned. The codenumber for the transistor is 4822 130 44283
MODEL: FC260
SYMPTOM: Replacement ribbon cable
CURE: Replacement ribbon cable A length of 12-way ribbon cable for interconnecting the cassette deck and amplifier is now available as a spare part under code number 4822 321 60671. The connector plug should be transferred to the replacement cable as follows: 1. Open outwards the long side lugs situated at both ends of the plug to release the top and sides. 2. Lift the plug away from the old cable and press down into position on the new. 3. Refit the top of the plug and apply pressure to make the electrical connections and to latch the top into place.
MODEL: FC260
SYMPTOM: Service solution
CURE: Service solution If a set is placed close to a TV-set and a recording in the High Dubbing mode has been made, a squeaky sound might occur. The frequency of this squeaky sound is about the half of the line-frequency of the TV-set ;the amplitude depends on the distance to the TV-set. This phenomenon can be solved by replacing the coils L102 and L102 (see AF panel, diagram 1) by coils with codenumber 4822 157 60203.
MODEL: FC290
SYMPTOM: Continuous running of motor in cassette deck A
CURE: A modification has been introduced to prevent the drive motor in cassette deck A from running continuously when the system is operated with a remote control handset. The modification consists of fitting a small additional PCB in the cassette unit 70FC290.This has already been carried out on later production sets at the factory.The PCB is added to the logic panel in the 70FC290. i) Remove the wire link adjacent to D419 between points A and B. ii)Mount the small PCB on the component side of the panel at points A, B and C. iii) Solder the two wires to points D (R467) and E (R469) as indicated. iv)Interconnect points F and G to provide an earth connection via the print track to point C. The part number of the additional PCB is 4822 214 51804. REMARKS: FOR SETS INCORPORATING CASSETTE DECK 70FC290
MODEL: FC290
SYMPTOM: Service Manual partslist
CURE: Service Manual partslist: - Service codenumber for blue lamp LA1 and LA2 (5V-115mA) should read 4822 134 40829 instead of 4822 134 40952 (orange lamp)
MODEL: FC290
SYMPTOM: Replacement ribbon cable
CURE: Replacement ribbon cable A length of 12-way ribbon cable for interconnecting the cassette deck and amplifier is now available as a spare part under code number 4822 321 60671. The connector plug should be transferred to the replacement cable as follows: 1. Open outwards the long side lugs situated at both ends of the plug to release the top and sides. 2. Lift the plug away from the old cable and press down into position on the new. 3. Refit the top of the plug and apply pressure to make the electrical connections and to latch the top into place.
MODEL: FC290
SYMPTOM: Manual
CURE: Manual In the partslist, the codenumber for MC14066BCP/HEF4066BP is not correct. The codenumber should read 5322 209 10357. In the partslist, the codenumber for transistor BC636 has not been mentioned. The codenumber for the transistor is 4822 130 44283.
MODEL: FC290
SYMPTOM: Service solution
CURE: Service solution If a set is placed close to a TV-set and a recording in the High Dubbing mode has been made, a squeaky sound might occur. The frequency of this squeaky sound is about the half of the line-frequency of the TV-set ;the amplitude depends on the distance to the TV-set. This phenomenon can be solved by replacing the coils L102 and L102 (see AF panel, diagram 1) by coils with codenumber 4822 157 60203.
MODEL: FC290
SYMPTOM: Partslist correction
CURE: Partslist correction Service codenumber for IC HEF4066BP should read 5322 209 10357 instead of 4822 209 73092.
MODEL: FC291
SYMPTOM: Service Manual partslist
CURE: Service Manual partslist: - Service codenumber for blue lamp LA1 and LA2 (5V-115mA) should read 4822 134 40829 instead of 4822 134 40952 (orange lamp)
MODEL: FC291
SYMPTOM: Partslist correction
CURE: Partslist correction Service codenumber for IC HEF4066BP should read 5322 209 10357 instead of 4822 209 73092.
MODEL: FC310
SYMPTOM: Service hint
CURE: Service hint When reading a disc, the display shows an ERROR message. The set is not able to read the T.O.C. and will not start to play. Hint: Verify the production period on the CDM Paper label: 9135 upto and including 9138 Inkjetmark: 9134.4A upto and including 9138.4A During this period wrong grease is used causing too high friction of the swing arm. In that case the CDM has to be replaced. From 9139 or 9138.4B onwards, this error is retrieved.
MODEL: FC320
SYMPTOM: Faulty recording when using auto-reverse
CURE: The following fault may be found on early production cassette decks when making a continuous recording on both sides of a cassette using the auto-reverse feature. After recording side A the recording does not continue on side B although the front panel display indicates that arecording is taking place. The problem may be solved by replacing µP IC7402 with a later version with updated software.Early version microprocessors are labelled CAS-LEU-90-A.Later production and replacement types are labelled CASS-C3-90-B. The part number 4822 209 63802 is unchanged.
MODEL: FC320
SYMPTOM: No sound on playback from either deck; no signal on level meters.
CURE: On checking around IC7701 (TDA 1602) it was found that the 14V supply on pin 14 of this IC was missing. Replacing the 4.7 Ohm saftey resistor (R3737) and IC7701 restored operation.
MODEL: FC320
SYMPTOM: Intermittent operation of functions and display.
CURE: After checking the supply rails and also the oscillator on IC7402 which all checked OK. It was most probable to be the actual processor and on replacing this IC the fault was cured.
MODEL: FC330
SYMPTOM: All characters on display are erratically light.
CURE: On checking the -25V and A.C. to display, this was found to be OK. The output from the microprocessor was then checked and found to be incorrect. Replacing the microprocessor (M50727) restored normal operation.
MODEL: FC330
SYMPTOM: Volume varying on both channels during Playback.
CURE: Transistor 133 was found to be leaky. BC548C 4822 130 44196.
MODEL: FC330
SYMPTOM: No audio ouput on left hand channel of either tape decks.
CURE: On tracing the audio path on the lefthand channel it was found that the signal was present on the positive of C422, but no signal on the negative. Replacing C422 which had gone open circuit cured the fault.
MODEL: FC330
SYMPTOM: Partslist correction
CURE: Partslist correction Service codenumber for IC HEF4066BP should read 5322 209 10357 instead of 4822 209 73092.
MODEL: FC360
SYMPTOM: No sound when playing back a tape.
CURE: Check head amplifier IC7701 (4822 209 62372) and switching IC 7656 (4822 209 71636).
MODEL: FC360
SYMPTOM: Sometimes one channel no sound.
CURE: Check the head wires.
MODEL: FC630
SYMPTOM: Partslist correction
CURE: Partslist correction Service codenumber for IC HEF4066BP should read 5322 209 10357 instead of 4822 209 73092.
MODEL: FC650
SYMPTOM: Partslist correction
CURE: Partslist correction Service codenumber for IC HEF4066BP should read 5322 209 10357 instead of 4822 209 73092.
MODEL: FC660
SYMPTOM: No operation
CURE: Reset line to IC402 permanently low. Check/replace T412 - BC548B. REMARKS : If no X-TAL oscillator can be detected at pin 5 of IC402, this is normal.
MODEL: FC660
SYMPTOM: No sound.Sound comes on very intermittently.
CURE: Check T133 - BC548C.
MODEL: FC731
SYMPTOM: Distortion during dubbing function.
CURE: Check/replace IC301 (MC14066).