JVC KD-AVX20A Service Manual Download Page 22

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1-22 (No.MA446<Rev.001>)

4.10 Monitor adjustment

* When adjusting, switch on the main unit and insert a test disc (VT-501). And play the test disc and pause it.

1. Set the service mode 4.
2. Exchanging it operate a menu of a service mode with the [UP] button and [DOWN] button.
3. Change data with the [B.SKIP]/[F.SKIP] buttons.
4. Write data with a [PLAY/PAUSE] button.

R/W CHROMA

Indication

Minimum

value

Maximum

value

Initial
value

Reference

value

Reference register value

00001

00000

00001

00000

Fix

Color amplitude revision ON/OFF

00002

00000

00003

00001

Fix

Color amplitude revision CAS

00003

00000

00063

00016

Fix

Color amplitude revision APC

00004

00000

00003

00001

Fix

Color amplitude revision CUS

00005

00000

00063

00010

Fix

Color amplitude revision APU

00006

00000

00001

00000

Fix

Black level extension ON/OFF

00007

00000

00001

Fix

Black level extension FUNCTION

00008

00000

00511

00176

Fix

Black level extension START POINT

00009

00000

00511

00128

Fix

Black level extension OFFSET

00010

00000

00255

00040

Adjust

Enhancer revision effect adjustment (NTSC)

00011

00000

00255

00040

Adjust

Enhancer revision effect adjustment (PAL)

00012

00000

00255

00010

Adjust

Limiter of the horizontal enhancer (NTSC)

00013

00000

00255

00010

Adjust

Limiter of the horizontal enhancer (PAL)

00014

00000

00255

00000

Adjust

Filter choice of the horizontal enhancer (NTSC)

00015

00000

00255

00000

Adjust

Filter choice of the horizontal enhancer (PAL)

00016

00000

00003

00000

Adjust

Tap change of the brightness outline revision (NTSC)

00017

00000

00003

00000

Adjust

Tap change of the brightness outline revision (PAL)

00018

00000

00127

00000

Adjust

Adjustment of the quantity of brightness outline core ring
(NTSC)

00019

00000

00127

00000

Adjust

Adjustment of the quantity of brightness outline core ring (PAL)

00020

00000

00006

00003

Adjust

Adjustment of the brightness outline revision gain (NTSC)

00021

00000

00006

00003

Adjust

Adjustment of the brightness outline revision gain (PAL)

00022

00000

00255

00128

Fix

Change in TINT of the whole picture (NTSC)

00023

00000

00255

00128

Fix

Change in TINT of the whole picture (PAL)

00024

00000

00255

00128

Fix

Change with the deepness of the color of the whole picture
(NTSC)

00025

00000

00255

00128

Fix

Change with the deepness of the color of the whole picture
(PAL)

00026

00000

00255

00125

Adjust

Tint adjustment (NTSC)

00027

00000

00255

00132

Adjust

Tint adjustment (PAL)

00028

00000

00255

00033

00036

Adjust

Color adjustment (NTSC)

00029

00000

00255

00033

00036

Adjust

Color adjustment (PAL)

00030

00000

00511

00064

Fix

Set the offset DC of the input video signal (NTSC)

00031

00000

00511

00064

Fix

Set the offset DC of the input video signal (PAL)

00032

00000

00001

00000

Fix

Quantity of transmission revision of the YUV DC

00033

00000

00255

00016

Fix

Quantity of transmission revision of the YUV DC

00034

00000

01023

00495

00476

Adjust

Contrast adjustment between the black - white (NTSC)

00035

00000

01023

00510

00493

Adjust

Contrast adjustment between the black - white (PAL)

00036

00000

00511

00359

Fix

Conversion coefficients from YUV to RGB (PRCL)

Summary of Contents for KD-AVX20A

Page 1: ...009 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 6 2 SPECIFIC SERVICE INSTRUCTIONS 1 9 3 DISASSEMBLY 1 9 4 ADJUSTMENT 1 15 5 TROUBLESHOOTING 1 26 Only for KD AVX40 Except KD AVX20UT KD AVX20A KD AVX40J Except KD AVX40J ...

Page 2: ... kHz to 1 710 kHz AM with channel interval set to 9 kHz 531 kHz to 1 602 kHz FM Tuner Usable Sensitivity 9 3 dBf 0 8 µV 75 Ω 50 dB Quieting Sensitivity 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 40 dB AM Tuner Sensitivity Selectivity 20 µV 40 dB DVD CD Signal Detection System Non contact optical pickup semiconductor lase...

Page 3: ...PLIFIER Maximum Power Output Front Rear 50 W per channel Continuous Power Output RMS Front Rear 20 W per channel into 4 Ω 40 Hz to 20 000 Hz at no more than 0 8 total harmonic distortion Load Impedance 4 Ω 4 Ω to 8 Ω allowance Equalizer Control Range Frequencies 60 0 Hz 150 0 Hz 400 0 Hz 1 0kHz 2 5kHz 6 3kHz 15 0kHz Level 10 dB Signal to Noise Ratio 70 dB Audio Output Level LINE OUT REAR SUBWOOFER...

Page 4: ...ce Mass storage class Compatible File System FAT 32 16 12 Max Current DC 5 V 500 mA BLUETOOTH KD AVX40 only Version Bluetooth 1 2 certified Output Power 4 dBm Max Power class 2 Service Area Within 10 m Profile HFP Hands Free Profile 1 5 OPP Object Push Profile 1 1 A2DP Advanced Audio Distribution Profile 1 2 AVRCP Audio Video Remote Control Profile 1 3 GENERAL Power Requirements Operating Voltage ...

Page 5: ...semiconductor laser Frequency Response DVD fs 48 96 kHz 16 Hz to 22 000 Hz VCD CD 16 Hz to 20 000 Hz Dynamic Range 93 dB Signal to Noise Ratio 95 dB Wow and Flutter Less than measurable limit MONITOR Screen Size 3 5 inch wide liquid crystal display Number of Pixel 211 200 pixels 960 horizontal 220 vertical Drive Method TFT Thin Film Transistor active matrix format Color System PAL NTSC Aspect Rati...

Page 6: ...rrs 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 7: ...e 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 replacement procedure i...

Page 8: ...duct 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 tho...

Page 9: ...ching the Bottom chassis See Fig 2 Fig 2 4 Remove the three screws E attaching the Bottom chassis See Fig 3 Fig 3 5 Remove the two screws F attaching the Bottom chassis See Fig 4 Fig 4 3 1 2 Removing the Main board See Fig 5 to 8 1 Disconnect the card wire from Front chassis connected to connector CN962 of the Main board see Fig 5 2 Disconnect the connector wire from Gear bracket unit con nected t...

Page 10: ...g 9 1 Remove the three screws M attaching the DVD mecha nism Fig 9 3 1 4 Removing the Connection board See Fig 10 1 Disconnect the card wire from DVD mechanism connected to connector CN395 of the Connection board 2 Disconnect the connector wire from BT antenna connected to connector of RF module 3 Remove the three screws N attaching the Connection board Fig 10 3 1 5 Removing the Panel A control bo...

Page 11: ...e supply to TP79 and TP81 approx DC 3 0V until Clamper is shift to loading complete position See Fig 2 3 Disconnect the flexible wires from Traverse mechanismassembly connected to connector CN101 and CN164 of the Front end board See Fig 2 4 Remove the five screws A attaching the Top cover assembly See Fig 3 5 From the bottom side disconnect the connector wire from Top cover assembly connected to c...

Page 12: ...bly 2 Slide to left side and then disengage hook a then hook b Fig 8 3 2 4 Removing the Gear base assembly See Fig 9 10 1 Remove the Loading arm spring L See Fig 9 2 Remove the two screws C attaching the Gear base assembly See Fig 10 Fig 9 Fig 10 3 2 5 Removing the Loading arm holder See Fig 11 1 Remove the two screws D attaching the Loading arm holder 2 Remove the Loading arm spring R Fig 11 B B ...

Page 13: ... c and then slide to backward slide to the arrow side the Disc plate 2 Remove the one screw F attaching the Photo board Fig 14 3 2 9 Removing the Loading motor See Fig 15 to 18 1 Remove the A wheel gear See Fig 15 2 Remove the A worm gear M connect gear and M wheel gear by sequentially See Fig 16 3 Remove the two screws G attaching the Loading motor Se Fig 17 4 When attaching the Loading motor mot...

Page 14: ... R collar R is easy to come off does not lose it CAUTION When reattach the Roller assembly Middle gear should keep direction and Slit washer should be change new part Fig 19 3 2 11 Removing the Roller See Fig 20 1 Remove the Slit washer 2 Pull out the Roller shaft CAUTION When reattach the Roller shaft Slit washer should be change new part Fig 20 Direction Slit washer R connect gear R collar R R m...

Page 15: ...2 R906 R8037 R8045 R8015 R8046 R8047 R8048 R8049 R740 R8029 Q881 Q8096 Q8091 Q806 Q953 Q701 Q8006 Q8084 Q8092 Q8095 Q8093 Q8098 Q8097 Q807 Q8003 Q8043 Q8012 Q8052 Q8022 Q955 Q8042 Q952 Q8013 Q8053 L8041 L961 L8021 L8051 L841 L702 L842 L8011 L701 IC701 IC803 IC804 IC801 IC881 IC721 IC941 Q8041 Q8021 Q8011 Q8083 Q8051 IC731 F801 D991 D8068 D8069 D974 D8067 D973 D8063 D972 D975 D967 D964 D963 D969 D9...

Page 16: ...choice of a menu with a PLAY PAUSE button 1 When an PLAY PAUSE button is pushed in NO EJECT indication it is set by an EJECT prohibition mode When an PLAY PAUSE button is pushed in EJECT OK indication it is set by a normal mode 2 Forced EJECT movement A screen becomes normal indication after an PLAY PAUSE button was pushed Multiplex push timing chart Example Service mode 2 SOURCE Key ON Hold EJECT...

Page 17: ...After clear completion a screen returns to normal indication after OK indication was displayed for three seconds INITIALIZE NOW INITIALIZE INITIALIZE OK INITIALIZE Initialization of a user area of each EEPROM Main micon EEPROM initialization a user entry domain a user entry domain speaker setting sub area of J version data to pre set Panel micon EEPROM initialization picture adjustment data DVD un...

Page 18: ...th version indication Software version of BT core Hardware version of BT Module Software version of BT Module BT Address INITIALIZE ALL Each EEPROM is initialized by a factory shipment state Main micon EEPROM initialization user entry domain error history speaker setting subarea of J version data to pre set Panel micon EEPROM initialization picture adjustment data DVD unit EEPROM initialization ex...

Page 19: ...an appointed position of DVD Position measured with VT 501 jitter value MONITOR Monitor terminal setting PLAY DVD x1 stopped start After start jitter is measured by an inner position Not displayed STOP Disc stopped LD OFF Not displayed OPEN OPEN Not displayed CLOSE CLOSE Not displayed SERVICE MODE 4 RDS S MODE MONITOR S MODE HD RADIO S MODE Screen indication Set to service mode 4 SOURCE EJECT MENU...

Page 20: ... mode for 30 sec onds it is not finished 80 0069 T12 access error Even if T12 access passes in a DVD running mode for 30 seconds it is not finished 80 0070 T24 access error Even if T24 access passes in a DVD running mode for 30 seconds it is not finished 80 0071 Read in area read error Read in area read operation of DVD is not completed 84 0072 DVD L1 layer adjustment error Adjustment of L1 layer ...

Page 21: ...E 2 cannot detect at moving close position 0D0021 0D0022 0D0023 Moving to 20 degrees ANGLE 3 error 1 Time out error by ANGLE 3 position cannot detect at moving to open position 2 Missing to ANGLE 2 and detected ANGLE 3 position at moving to open position 3 Time out error by ANGLE 3 cannot detect at moving close position 0E0031 0E0032 0E0033 Moving to 30 degrees ANGLE 4 error 1 Time out error by AN...

Page 22: ...16 00000 00003 00000 00000 Adjust Tap change of the brightness outline revision NTSC 00017 00000 00003 00000 00000 Adjust Tap change of the brightness outline revision PAL 00018 00000 00127 00000 00000 Adjust Adjustment of the quantity of brightness outline core ring NTSC 00019 00000 00127 00000 00000 Adjust Adjustment of the quantity of brightness outline core ring PAL 00020 00000 00006 00003 000...

Page 23: ...00016 00016 Fix Adjust 4 gamma revision point position of a Red signal 00062 00000 00255 00020 00020 Fix Adjust 5 gamma revision point position of a Red signal 00063 00000 00255 00024 00024 Fix Adjust 6 gamma revision point position of a Red signal 00064 00000 00255 00028 00028 Fix Adjust 7 gamma revision point position of a Red signal 00065 00000 00255 00035 00035 Fix Appoint gamma revision gain ...

Page 24: ...255 00112 00112 Adjust Adjust the horizontal indication point of the picture PAL 00105 00000 00255 00020 00020 Adjust Adjust the vertical indication point of the picture NTSC 00106 00000 00255 00028 00028 Adjust Adjust the vertical indication point of the picture PAL 00107 00000 00127 00042 00042 Fix AD clock gain adjustment NTSC 00108 00000 00127 00042 00042 Fix AD clock gain adjustment PAL 00109...

Page 25: ...tting of horizontal synchronization sig nal PAL 00145 00000 00511 00326 00326 Fix DOKIDET 01 00146 00000 00511 00082 00082 Fix DOKIDET 02 00147 00000 00511 00033 00033 Fix DOKIDET 03 00148 00000 00026 00000 00000 Fix Unused 00149 00000 00026 00000 00000 Fix Unused 00150 00000 00255 00000 00000 Fix Sub career center frequency setting NTSC 00151 00000 00255 00000 00000 Fix Unused 00152 00000 00255 0...

Page 26: ... 16 15 13 4 3 2 1 12 11 10 9 BK RD WH GN VI GY BL WH GN BK VI BK GY BK YL BL WH BK BR 14 OR WH YG YL BK GN BK VI BK VI WH WH BK 9 1 3 16 11 10 5 6 GY BK 12 BL WH GY GN 7 15 8 OR WH 2 RD 14 YG BL 4 BR 13 Black RD BK Red BL Blue WH White GN Green GY Gray Yellow VI Violet YL Orange OR BR Brown YG Yellow Green ...

Page 27: ...BK WH VI BK VI GN BK YG 8 GN 7 1 5 6 3 4 8 2 8 7 6 5 16 15 13 4 3 2 1 12 11 10 9 BK RD WH GN VI GY BL WH GN BK VI BK GY BK YL NC WH BK BR 14 OR WH YG Black RD BK Red BL Blue WH White GN Green GY Gray Yellow VI Violet YL Orange OR BR Brown YG Yellow Green 1 3 5 7 2 4 6 8 NC BL WH YL RD BK NC BR OR WH 1 3 5 7 2 4 6 8 GY WH GY BK GN GN BK VI VI BK WH BK 14 BL WH 6 2 ...

Page 28: ... No MA446 Rev 001 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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