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JVC KD-AR8500 Service Manual
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JVC KD-AR8500 Service Manual

JVC KD-AR8500 Service Manual

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Download this manual See also: Service Manual, Instruction Manual
SERVICE MANUAL
2005
6
MA191
KD-AR8500,KD-SHX850
ARSENAL rogo
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
CD / SD RECEIVER
DISP
BACK
BAND
PICT
DISP
BACK
BAND
PICT
KD-AR8500 J

TABLE OF CONTENTS

COPYRIGHT © 2005 Victor Company of Japan, Limited
SOURCE
MENU
SOURCE
MENU
KD-SHX850 J
Area suffix
J ------------- Northern America
No.MA191
2005/6

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Summary of Contents for JVC KD-AR8500

  • Page 1: Table Of Contents

    DISP BACK BAND PICT MENU KD-AR8500 J KD-SHX850 J ARSENAL rogo Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS PRECAUTIONS ............... 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION AUDIO AMPLIFIER SECTION 35 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N Power Output 85 dBA (reference: 1 W into 4 Ω) Signal-to-Noise Ratio 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Equalizer Control Range Frequencies : Graphic EQ 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 12.5 kHz (9 bands)

  • Page 3: Precautions

    SECTION 1 PRECAUTIONS Safety Precautions Burrs 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 4 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.2.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
  • Page 5 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam. procedures other than those specified here in may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe DISASSEMBLY. 1-6 (No.MA191)

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front Front panel assembly panel assembly. (2) Remove the front panel assembly. Detach button Fig.1 3.1.2 Removing the heat sink (See Fig.2)
  • Page 8 3.1.3 Removing the top chassis assembly (See Figs.3 to 6) • Prior to performing the following procedures, remove the heat Bottom chassis assembly sink. Reference: Remove the front panel assembly as required. (1) From the bottom side of the main body, remove the two screws C attaching the top chassis assembly to the bottom chassis assembly.
  • Page 9 3.1.4 Removing the front chassis assembly (See Figs.7 and 8) • Prior to performing the following procedure, remove the front Top chassis assembly panel assembly, heat sink and top chassis assembly. (1) From the both sides of the top chassis assembly, remove the two screws E attaching the front chassis assembly.
  • Page 10 3.1.6 Removing the main board (See Figs.10 and 11) • Prior to performing the following procedures, remove the front Rear bracket panel assembly, heat sink and top chassis assembly. (1) From the rear side of the bottom chassis assembly, remove the two screws G attaching the rear bracket to the bottom chassis assembly.
  • Page 11 3.1.8 Removing the front door mechanism assembly (See Fig.13) • Prior to performing the following procedures, remove the front Front door mechanism assembly panel assembly, heat sink, top chassis assembly and main Bottom chassis board. (1) From the top side of the bottom chassis assembly, remove the screw N attaching the FPC guide to the bottom chassis.
  • Page 12 CD mechanism assembly section • Remove the CD mechanism assembly from the main body. (See "3.1.5 Removing the CD mechanism assembly".) 3.2.1 Removing the mechanism control board (See Fig.1) (1) From the bottom side of the CD mechanism assembly, sol- CD mechanism assembly der the short sections on the flexible wire.
  • Page 13 3.2.2 Removing the top cover (See Fig.2) (1) From the back side of the CD mechanism assembly, re- move the two screws B attaching the top cover. (2) Take out the top cover in an upward direction. Reference: When attaching the top cover, set the sections c of the top cov- er under the bending sections d of the chassis base 2.
  • Page 14 3.2.4 Removing the clamper unit (See Figs.5 and 6) • Remove the mechanism control board, top cover and mecha- Clamper unit 2 nism section. (1) From the bottom side of the mechanism section, remove the clamper 2 spring. (See Fig.5.) (2) Release section e of the clamper spring from the bending section of the CD chassis assembly.
  • Page 15 Clamper 2 spring CD chassis assembly Clamper unit 2 Fig.7 Notch Clamper unit 2 Fig.8 Clamper unit 2 Clamper spring Fig.9 (No.MA191)1-15...
  • Page 16 3.2.6 Removing the front unit (See Figs10 to 12) • Remove the mechanism control board, top cover and mecha- nism section. Flexible wire (1) From the bottom side of the mechanism section, remove the double-stick tape fixing the flexible wire. (See Fig.10.) (2) From the top side of the mechanism section, remove the screw D attaching the front unit 2.
  • Page 17 3.2.7 Removing the loading arm assembly (See Figs.13 and 14) • Remove the mechanism control board, top cover, mechanism Loading arm assembly section and front unit 2. (1) From top side of the mechanism section, move the loading arm assembly in the direction of the arrow. (See Fig.13.) (2) Release the projections from the right and left joints (m, n) of the CD chassis assembly.
  • Page 18 3.2.8 Removing the rod (L), rod (R) and roller assembly (See Figs.15 and 16) • Remove the mechanism control board, top cover, mechanism Collar Collar section, front unit and loading arm assembly. (1) From the bottom side of the loading arm assembly, release the rod (L) and (R) from the joints r.
  • Page 19 3.2.9 Removing the CD pickup (See Figs.17 to 19) • Remove the mechanism control board. CD mechanism assembly (1) From the bottom side of the CD mechanism assembly, turn the feed gear in the direction of the arrow to move the CD pickup assembly outwards.
  • Page 20 3.2.10 Removing the spindle motor (See Fig.20) • Remove the mechanism control board, top cover, mechanism T. table assembly section and clamper unit. (1) From the top side of the mechanism section, remove the T.table assembly and washer from the spindle motor. Washer (2) Remove the two screws H attaching the spindle motor.
  • Page 21 3.2.12 Removing the SW board and rest SW board (See Fig.23) • Remove the mechanism control board. CD mechanism assembly (1) From the bottom side of the CD mechanism assembly, re- move the screw L attaching the SW board. (2) Remove the screw M attaching the rest SW board. SW board Rest SW board Fig.23...

  • Page 22: Adjustment

    (3) Digital tester Output Level Line out 5.0V (Vol. MAX) (4) Tracking offset meter (5) Test Disc JVC :CTS-1000 Dummy load (6) Extension cable for check Exclusive dummy load should be used for AM,and FM. For FM EXTDV001-20P × 1...
  • Page 23 Service mode 4.2.1 Service mode setting (1) Turn ON power (2) Pressing both the DISP button and BAND button. (3) Set to service mode CURSOR button : BACK CURSOR button : NEXT OK button : SET CURSOR SOURCE KD-SHX751 SERVICE MODE (MENU) SERVICE MODE RUNNING MODE DISP...
  • Page 24 CD DATA READ ADJ NOW ADJ INT OTHERS ADJ NOW ADJ NOW FEB ** FEO ** TEB ** RFG** The auto adjustment value of FGA ** TEO ** TGA ** survo at now ADJ INT ADJ INT FEB ** FEO ** TEB ** RFG** The auto adjustment value of FGA ** TEO ** TGA ** survo at initial...
  • Page 25 PICTURE CLEAR NOW... PICTURE CLEAR A.DSP ERROR CLEAR NOW... A.DSP ERROR CLEAR T.DSP ERROR CLEAR NOW... T.DSP ERROR CLEAR ROM COLLECTION MAIN DATA CLEAR MAIN DATA CLEAR NOW... MAIN DATA CLEAR DSP TUNER S MODE VER=V*** SPI=** PI=**** ***.** SMI=***% PTY=** ******* MP=***% TP/TA=*/* EON ADJ=***% MS/DI=*/* STERO BW=*...
  • Page 26 SMTH1=****** SMTH1=****** DEFAULT * BACK Select the value with ENTER : OK "CURSOR" button. SMTH2=****** SMTH2=****** DEFAULT * BACK Select the value with ENTER : OK "CURSOR" button. MP=****** MP=****** DEFAULT * BACK Select the value with ENTER : OK "CURSOR"...
  • Page 27 7.FM IF COUNTER 7.FM COUNTER 97.9MHz 70dBuV 0% 97.9MHz 70dBuV 0% Adjustment NG or No Signal 8.AM S.METER 8.AM S.METER 999kHz 26dBuV 0% 999kHz 26dBuV 0% High or Low or No Signal 9.AM S.METER 9.AM S.METER 999kHz 56dBuV 0% 999kHz 56dBuV 0% High or Low or No Signal 10.AM IF COUNTER 10.AM IF COUNTER...
  • Page 28 4.2.2 Error code of front panel mechanism PANEL ANGLE PANEL CLOSE MAIN BODY 10 degrees 20 degrees 30 degrees OPEN OPEN ERROR CODE ERROR CODE Details (SERVICE MODE) (NORMAL) OPEN error 0A01 1.Time out error by OPEN position cannot detect. CLOSE error (ANGLE 1 error) 0B06 1.Time out error by ANGLE 1 position cannot detect.

  • Page 29: Troubleshooting

    SECTION 5 TROUBLESHOOTING Feed section Is the wiring for IC601 Is 8V present at IC681 Is 2V at IC601 pin 63? Check CD8V. pin 63 correct? pins 3 and 12? Check the vicinity of IC601. Is 4V present at both Is 2V present at IC681 Check the feed motor sides of the feed motor?
  • Page 30 Signal processing section Compare the L-ch and Is the sound output from No sound from either R-ch to locate the both channels (L, R)? channel. defective point. Normal Is 9V present at IC165 Is 9V present at IC901 Check IC901 and its /IC265 pin 16? pin 10? peripheral circuits.
  • Page 31 Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn of the power switch and, disconnect the with a alcohol soaked cotton swab. power cord.
  • Page 32 16 PIN CORD DIAGRAM (for KD-AR8500) Black Green GN/BK WH/BK VI/BK GY/BK Violet Blue Gray WH White Yellow BL/WH OR/WH Orange Brown MEMORY Choking Coil OR/WH ILLUMINATION CONTROL WH/BK GY/BK GN/BK VI/BK BL/WH REMOTE TEL MUTING Rear Right Auto Antenna...
  • Page 33 16 PIN CORD DIAGRAM (for KD-SHX850) Black Green GN/BK WH/BK VI/BK GY/BK Violet Blue Gray WH White Yellow BL/WH OR/WH Orange MEMORY Choking Coil OR/WH ILLUMINATION CONTROL WH/BK GY/BK GN/BK VI/BK BL/WH REMOTE Rear Right Auto Antenna Front Right Line Illuminations Control Front...
  • Page 34 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA191) Printed in Japan...

This manual is also suitable for:

Kd-shx850