JVC KD-G442EX Service Manual Download Page 12 | Manualshive

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1-12 (No.MA377<Rev.004>)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

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Summary of Contents for KD-G442EX

Page 1: ...KD S45J KD G645SUI KD G442E KD G442EX KD G442EY KD G499UR KD G357EE2 KD G645TUH COPYRIGHT 2008 Victor Company of Japan Limited Lead free solder used in the board material Sn Ag Cu melting point 219 Centigrade Lead free solder used in the board material Sn Cu melting point 230 Centigrade TABLE OF CONTENTS 1 PRECAUTION 1 9 2 SPECIFIC SERVICE INSTRUCTIONS 1 12 3 DISASSEMBLY 1 13 4 ADJUSTMENT 1 29 5 T...

Page 2: ...vity 16 3 dBf 1 8 µV 75 Ω Alternate Channel Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 30 dB MW Tuner Sensitivity Selectivity 20 µV 35 dB LW Tuner Sensitivity 50 µV CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic ...

Page 3: ... 000 Hz Stereo Separation 30 dB MW Tuner Sensitivity Selectivity 20 µV 35 dB LW Tuner Sensitivity 50 µV CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal to Noise Ratio 98 dB Wow and Flutter Less than measurable limit MP3 Decoding Form...

Page 4: ...1 8 µV 75 Ω Alternate Channel Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 35 dB AM Tuner Sensitivity Selectivity 20 µV 35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal to Noise Ratio 98 dB W...

Page 5: ...Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 30 dB AM Tuner Sensitivity Selectivity 20 µV 35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal to Noise Ratio 98 dB Wow and Flutter Less than measu...

Page 6: ...nel Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 30 dB AM Tuner Sensitivity Selectivity 20 µV 35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal to Noise Ratio 98 dB Wow and Flutter Less than m...

Page 7: ...Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 30 dB AM Tuner Sensitivity Selectivity 20 µV 35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal to Noise Ratio 98 dB Wow and Flutter Less than measu...

Page 8: ...Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 30 dB AM Tuner Sensitivity Selectivity 20 µV 35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non contact optical pickup semiconductor laser Number of Channels 2 channels stereo Frequency Response 5 Hz to 20 000 Hz Dynamic Range 96 dB Signal to Noise Ratio 98 dB Wow and Flutter Less than measu...

Page 9: ...urrs formed during molding may be left over on some parts of the chassis Therefore pay attention to such burrs in the case of preforming repair of this system Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check ...

Page 10: ...of the laser diode in the optical pickup The tester s internal power source can easily destroy the laser diode 1 3 Handling the traverse unit optical pickup 1 Do not subject the traverse unit optical pickup to strong shocks as it is a sensitive complex unit 2 Cut off the shorted part of the flexible cable using nippers etc after replacing the optical pickup For specific details refer to the replac...

Page 11: ...oduct uses visible and or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated It is dangerous to defeat the safety switches 5 CAUTION If safety switches malfunction the laser is able to function 6 CAUTION Use of controls adjustments or performance of procedures other than th...

Page 12: ...1 12 No MA377 Rev 004 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS ...

Page 13: ... 1 1 Disengage the four hooks a engaged the both side of the FRONT CHASSIS assembly Fig 3 1 3 1 2 Removing the HEAT SINK See Fig 3 2 3 3 1 Remove the three screws A and the two screws B attaching the HEAT SINK See Fig 3 2 2 Remove the two screws C and the one screw D attaching the HEAT SINK See Fig 3 3 Fig 3 2 Fig 3 3 hook a A B C D ...

Page 14: ...OVER 2 Slide the BOTTOM COVER to backward Fig 3 4 3 1 4 Removing the MAIN BOARD assembly See Fig 3 5 3 6 1 Remove the two screws G and the two screws H attaching the MAIN BOARD assembly See Fig 3 5 3 6 2 Disconnect the connector CN501 connected to MAIN BOARD assembly and CD MECHANISM assembly See Fig 3 6 Fig 3 5 Fig 3 6 E F G H CN501 ...

Page 15: ...emove the three screws J attaching the CD MECHANISM assembly Fig 3 7 3 1 6 Removing the SWITCH BOARD assembly See Fig 3 8 1 Remove the VOLUME KNOB 2 Remove the four screws K attaching the REAR COVER 3 Disengage the nine hooks b engaged the REAR COVER Fig 3 8 J J hook b hook b K K ...

Page 16: ... Figs 1 and 2 1 From the both side of the CD mechanism assembly remove the four screws A attaching the top cover See Fig 1 2 Lift the front side of the top cover and move the top cover backward to release the two joints a See Figs 1 and 2 Fig 1 Fig 2 A A A a Top cover A a Top cover ...

Page 17: ...static electricity See Fig 3 1 From the bottom side of the CD mechanism assembly remove the screw C attaching the base board See Figs 3 and 4 2 Solder the short land c on the pickup See Fig 3 3 Disconnect the flexible wire from the connector on the pickup See Fig 3 4 Remove the base board from the joints d of the frame in the direction of the arrow See Figs 3 and 4 Reference Remove the wires from ...

Page 18: ...Remove the chassis unit from the dampers on the frame in an upward direction See Fig 6 Note Pay attention to misuse and loss of each spring See Fig 5 When reassembling make sure that the three shafts on the underside of the chassis unit are inserted to the dampers certainly See Fig 6 Fig 5 Fig 6 Front suspension spring Rear suspension spring Rear suspension spring Front suspension spring Chassis u...

Page 19: ...the clamper assembly See Figs 7 and 8 Remove the top cover Move the clamper assembly in the direction of the arrow to release the joints f from the chassis unit Fig 7 Fig 8 f f Clamper assembly Chassis unit f f Clamper assembly Chassis unit ...

Page 20: ...s unit From the bottom side of the chassis unit remove the screw D and take out the loading feed motor assembly in the direction of the arrow Reference Remove the wires from the soldered sections g of the loading feed motor assembly as required Fig 9 D Loading feed motor assembly g Loading feed motor assembly Chassis unit ...

Page 21: ...d screw holder as required See Fig 12 7 Release the claw k in the direction of the arrow to remove the feed sub holder See Fig 12 3 2 8 Reattaching the pickup See Figs 10 to 13 1 Reattach the feed sub holder to the pickup See Fig 12 2 Reattach the feed screw holder to the pickup using the screw G See Fig 12 3 Reattach the feed screw assembly and pu shaft holder A to the pickup as before See Fig 11...

Page 22: ...m in the direction of the arrow to remove the trigger arm base from the section s in the direction of the arrow 4 Remove the trigger arm from the section t Fig 14 3 2 10 Removing the top plate assembly See Fig 15 Remove the top cover base board chassis unit clamper assembly and trigger arm 1 Remove the screw H attaching the top plate assembly 2 Move the top plate assembly in the direction of the a...

Page 23: ...e link gear L in the direction of the arrow 3 Move the mode switch in the direction of the arrow 1 to remove the sections z of the top plate assembly 4 Move the mode switch in the direction of the arrow 2 and remove the mode switch from the sections aa ab Note When reattaching the link gear L attach it after aligning the hole ac of the link gear L to the hole ac of the link gear R Reference When r...

Page 24: ...lect arm R from the sections ag See Fig 17 5 From the bottom side of the top plate assembly remove the select lock arm spring from the section ah See Fig 18 6 From the top side of the top plate assembly remove the section aj of the select lock arm from the top plate assembly at first and remove the sections ak am ofthe selectlock arm from the top plate assembly See Fig 18 Note When removing the se...

Page 25: ... the lock arm assembly from the joint at of the cam plate L assembly See Fig 19 5 From the right side of the lock arm assembly remove the loading roller spring L from the section au See Fig 20 6 From the top side of the lock arm assembly remove the loading roller spring R in the direction of the arrow and remove the loading roller assembly See Fig 20 7 Remove the roller guide R HL washer and rolle...

Page 26: ...r 2 See Fig 22 3 Pull out the change arm See Fig 22 4 Move the change gear plate rivet assembly in the direction of the arrow 2 to remove the section av of the change gear plate rivet assembly from the chassis unit while moving the change lock lever in the direction of the arrow 1 See Fig 23 5 Pull out the change gear 3A and change gear 3B from the change gear plate rivet assembly See Fig 23 Fig 2...

Page 27: ...embly top plate assembly loading roller assembly and cam plate R 1 Remove the slide hook rivet assembly and trigger rack spring from the chassis unit See Fig 25 2 From the bottom side of the chassis unit pull out the loading gear 1 See Fig 26 3 Remove the trigger control spring from the sections ay az See Fig 26 4 Take out the trigger rack plate from the chassis unit See Fig 26 Reference When atta...

Page 28: ...gear 2 in the direction of the arrow 2 while pulling the trigger arm in the direction of the arrow 1 and let the pickup move in the direction of the arrow 3 See Fig 28 3 Slide the spindle motor assembly in the direction of the arrow and take out it in an upward direction from the chassis unit See Fig 28 Reference Remove the wires from the soldered sections c on the base board and remove them from ...

Page 29: ...e and Bass Treble volume lndication 0 Loudness OFF 4 4 Dummy load Exclusive dummy load should be used for AM and FM For FM dummy load there is a loss of 6dB between SSG output and antenna input The loss of 6dB need not be considered sincedirect reading of figures are applied in this working standard 4 5 How to connect the extension cable for adjusting Caution Be sure to attach the heat sink and re...

Page 30: ... RD BR YL NC BK 1 3 5 7 2 4 6 8 VI GY WH GN VI BK GY BK WH BK GN BK 7 RD 16 YL 8 BK 5 BL WH 13 BR 3 GN 11 GN BK 2 VI 10 VI BK 4 WH 12 WH BK 1 GY 9 GY BK RD RD 7 YL 4 8 5 2 8 5 2 7 1 6 3 4 BK RD BL WH BR Black Red Blue White Brown GN Green VI Violet GY Gray YL Yellow RR Rear Right FR Front Right FL Front Left RL Rear Left REMOTE Remote ACC TEL ACC Line Telephone Muting GND Ground MEMORY Memory Back...

Page 31: ...0 KD S45 BK YL RD BL WH GN BK VI VI BK WH BK GN GY BK WH 2 16 1 8 5 7 12 10 3 9 11 GY BK RD BL WH Black Red Blue White GN VI Violet GY Gray YL Yellow Green 4 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 BK RD NC BL WH WH GN VI GY YL NC NC WH BK GN BK VI BK GY BK 8 NC ...

Page 32: ...K YL VI RD GN BK VI BK WH BK GN GY BK WH 16 1 8 7 2 12 10 3 9 11 GY 4 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 BK RD BL BL WH WH GN VI GY YL NC NC WH BK GN BK VI BK GY BK 8 OR WH BK RD BL WH Black Red Blue White GN Green VI Violet GY Gray YL Yellow OR Orange OR WH 15 5 BL WH 6 BL ...

Page 33: ...K GY BK RD1 YL1 BK BL GN GN BK VI VI BK WH BK GY GY BK RD3 RD2 YL 2 WH 1 3 5 7 2 4 6 8 NC YL2 OR WH RD2 BK 1 3 5 7 2 4 6 8 VI GY WH GN VI BK GY BK WH BK GN BK BK RD BL WH BR Black Red Blue White Brown GN VI Violet GY Gray YL Yellow YL1 NC Green BL WH BK BL OR WH BL WH 7 8 5 4 6 7 1 5 6 3 4 8 2 7 16 8 15 6 2 11 3 12 4 10 9 1 5 OR Orange NC NC ...

Page 34: ...en 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 BK RD BL NC WH GN VI GY YL NC NC WH BK GN BK VI BK GY BK 8 NC 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BK NC WH BK GY BK GN BK VI BK NC NC NC NC NC NC YL WH GY GN VI RD BL NC 8 BK 16 YL 7 RD 6 BL 4 WH 12 WH BK 3 GN 11 GN BK 2 VI 10 VI BK 1 GY 9 GY BK 20 10 2 1 8 18 6 16 5 15 7 17 ...

Page 35: ... Black Red White GN VI Violet GY Gray YL Yellow Green 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 BK RD NC NC WH GN VI GY YL NC NC WH BK GN BK VI BK GY BK 8 NC 8 BK 16 YL 7 RD 4 WH 12 WH BK 3 GN 11 GN BK 2 VI 10 VI BK 1 GY 9 GY BK GN GN BK VI BK BK VI NC RD YL WH GY BK GY WH BK ...

Page 36: ...BK GY BK WH BK GN BK BK Black RD Red BL Blue WH White GN Green VI Violet GY Gray YL Yellow 7 RD 16 YL 8 BK 5 BL WH 3 GN 11 GN BK 2 VI 10 VI BK 4 WH 12 WH BK 1 GY 9 GY BK RD RD 7 YL 4 8 5 7 8 1 2 5 3 6 4 RR Rear Right FR FL RL Rear Left Front Right Front Left REMOTE Remote out ACC MEMORY ACC Line GND Memory Backup Battery Ground ACC MEMORY GND REMOTE RL RL RR RR FL FL FR FR BL WH WH BK GN BK VI BK ...

Page 37: ... RD BL WH VI Black Red Blue Violet GN GY Gray YL Yellow Green OR Orange 3 4 5 6 VI BK NC NC GN BK 1 VI 2 GN 5 6 7 8 9 10 1 2 3 4 WH BK BK WH BL NC OR WH YL GY BK GY RD 7 6 5 4 3 2 1 8 16 15 14 13 12 11 10 9 BK RD BL BL WH WH GN VI GY YL NC NC WH BK GN BK VI BK GY BK OR WH ...

Page 38: ... No MA377 Rev 004 VPT Printed in Japan Victor Company of Japan Limited Mobile Entertainment Division 10 1 1chome Ohwatari machi Maebashi city 371 8543 Japan ...

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