JVC CH-X1500 Service Manual
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JVC CH-X1500 Service Manual

JVC CH-X1500 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
01
2003
49776
TE
L 13942296513
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
3
Adjustment method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-30
www
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http://www.xiaoyu163.com
CD CHANGER
CH-X1500

TABLE OF CONTENTS

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COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
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Area Suffix
J
Northern America
E
Continental Europe
U
Other Areas
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CH-X1500
9 9
9 9
No.49776
2003/01

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  • Page 1: Table Of Contents

    CH-X1500 3 7 63 1515 0 SERVICE MANUAL CD CHANGER 49776 2003 CH-X1500 L 13942296513 Area Suffix Northern America Continental Europe Other Areas TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .

  • Page 2: Important Safety Precautions

    Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. L 13942296513 This unit can only be connected to the JVC car receivers/controllers equipped with MP3-CD changer control functions. If connected to any other receiver/controller, this unit cannot work (even CDs may not play back).
  • Page 3 CH-X1500 1.2 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, 3 7 63 1515 0 can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

  • Page 4: Disassembly Method

    CH-X1500 http://www.xiaoyu163.com SECTION 2 Disassembly method 3 7 63 1515 0 Perform operations according to the items to be disassembled. 2.1 Replacement of the Pickup (1) After removing the exterior (top and bottom). (2) Proceed to the "2.5.8.Pickup replacement procedure" sec- Bottom cover tion.
  • Page 5 CH-X1500 2.3.2 Removing the top cover (See fig.5~9) Turn to the top position (at a right (1) Pull out the dampers, being careful not to damage them. angle) ,then the push down to lift off. 3 7 63 1515 0...
  • Page 6 CH-X1500 http://www.xiaoyu163.com 2.3.3 Removing the fitting (See fig.10) (1) Remove the screw E attaching the fitting. 3 7 63 1515 0 (2) Release the two joints a on the top edge of the fitting, then release the joints b at the left / right bottom edges, and remove.
  • Page 7 CH-X1500 2.4 Changer-mechanism section 2.4.1 Remove the sensor assembly unit (See fig.12) 3 7 63 1515 0 Sensor assembly Magazine lock arm (1) Remove the two screws H attaching the sensor assembly unit. (2) Release the springs on the back of the sensor assembly unit from the holes on the chassis.
  • Page 8 CH-X1500 http://www.xiaoyu163.com 2.4.4 Remove the rear slider (See fig.15) Can be remove at the stud position (1) Position the unit with the front section facing down. Rotate Rear slider (At the wideness position) 3 7 63 1515 0 the third gear located on the back of the main unit in the direction of the arrow (clockwise).
  • Page 9 CH-X1500 2.4.6 Remove the top plate (See fig.17,18) (1) Remove the nine screws J attaching the top plate. 3 7 63 1515 0 (2) Disconnect the section d attached to the rear of the unit, then lift the top plate slightly.
  • Page 10 CH-X1500 http://www.xiaoyu163.com 2.4.7 Remove the lifter unit (See fig.19,20) (1) Remove the elevator spring located on the front side of the 3 7 63 1515 0 unit. (Be sure to first remove the spring from the lifter side as shown in the upper part of the diagram.) (2) Lift the lifter unit upward, then remove the lower rod to re- move the lifter unit from the chassis.
  • Page 11 CH-X1500 2.4.8 Remove the lifter bracket (See fig.21) (1) Remove the two screws K attaching the lifter bracket from 3 7 63 1515 0 the back of the lifter unit. (2) Remove the lower rod. Lifter bracket Fig.21 2.4.9 Remove the side bracket and traverse mechanism assenbly (See fig.22)
  • Page 12 CH-X1500 http://www.xiaoyu163.com 2.4.10 Remove the pickup assembly (See fig.23~26) CAUTION: Flexible wire 3 7 63 1515 0 When replacing the flexible wire connected, solder the short- ing round point. Otherwise, the pickup may be damaged. (1) Remove the three screws M attaching the mechanism board on the back of the traverse mechanism assembly.
  • Page 13 CH-X1500 2.4.11 Removing the tray motor assembly (See fig.27, 28) (1) Remove the two screws R attaching the tray motor as- 3 7 63 1515 0 sembly, and remove. (2) Remove the two screws S attaching the tray motor, and...
  • Page 14 CH-X1500 http://www.xiaoyu163.com 2.5 Precautions reassembling REFERENCE: Mechanism board 3 7 63 1515 0 When reassembling, also refer to the disassembling proce- Flexible wire dures. CN603 2.5.1 Mounting the traverse mechanism assembly (See fig.30~34) (1) When mounting the pickup assembly, attach the feed slide shaft assembly to the traverse chassis.
  • Page 15 CH-X1500 2.5.2 Mounting the lifter unit (See fig.35~37) (1) Insert the shafts e of the traverse mechanism assembly 3 7 63 1515 0 into the slide grooves f on the lifter unit. (2) Move the hook of the lifter unit to the edge, and move the sliding lever inside the side bracket unit to the edge as well.
  • Page 16 CH-X1500 http://www.xiaoyu163.com 2.5.3 Mounting the chassis (L) assembly and chassis (R) Lifter unit assembly (See fig.38~40) 3 7 63 1515 0 (1) Attach the lower rod to the chassis (R) assembly. While shifting the rod toward the front side, mount the rod on the lifter unit.
  • Page 17 CH-X1500 2.5.4 Mounting top plate (See fig.41~44) (1) Mount the upper rod on the lifter side and set it on the rear 3 7 63 1515 0 of the top plate, then mount the other end of the upper rod to k .
  • Page 18 CH-X1500 http://www.xiaoyu163.com 2.5.5 Mounting the front slider and rear slider (See fig.45, 46) (1) Position the unit with the rear side facing down, then rotate Stud 3 7 63 1515 0 the third gear in the direction of the arrow (clockwise) until...
  • Page 19 CH-X1500 2.5.6 Mounting the sensor board assembly (See fig.47) Sensor board assembly (1) Attach the longer spring to the white resin, and attach the 3 7 63 1515 0 shorter spring temporarily to the sensor assembly bracket. Attach temporarity...
  • Page 20 CH-X1500 http://www.xiaoyu163.com 2.5.8 Pickup replacement procedure (See fig.49~55) Unsolder (1) Remove the bottom cover, front panel and top cover of the 3 7 63 1515 0 exterior section. (2) Remove the card wire from the connector CN604 on the mechanism board.
  • Page 21 CH-X1500 Pickup assembly 3 7 63 1515 0 Shaft holder Feed slide shaft assembly Middle gear Traverse chassis Fig.54 L 13942296513 Shift approx.30mm Lifter unit lever Fig.55 u163 1-21 http://www.xiaoyu163.com...

  • Page 22: Adjustment Method

    CH-X1500 http://www.xiaoyu163.com SECTION 3 Adjustment method 3 7 63 1515 0 3.1 Forced eject procedures Magazine eject does not function. Completed RESET (Press EJECT for 3 sec.) Check that the trays remain no more than 10 mm inside the magazine.
  • Page 23 CH-X1500 3.2 Troubleshooting 3.2.1 Servicing procedures for CH-X1500 error displays 3 7 63 1515 0 Error display Servicing procedure E1: Eject error The magazine cannot be ejected until S601 (magazine switch) turns off. Can the magazine be ejected? YES 1, NO 1 The magazine switch (S601) does not turn off even though the magazine is completely ejected.
  • Page 24 CH-X1500 http://www.xiaoyu163.com 3.2.2 CH-X1500 Error code The following error codes can be displayed and stored in up to 3 memories when the KD-MX3000 is used with the controller. Refer 3 7 63 1515 0 to the KD-MX3000 service manual regarding error code indication.
  • Page 25 CH-X1500 3.3 Flow of functional operation until TOC read 3 7 63 1515 0 Power ON When the laser diode correctly Set Function to CD When the pickup correctly moves emits to the inner area of the disc Microprocessor...
  • Page 26 CH-X1500 http://www.xiaoyu163.com 3.3.1 General section 3 7 63 1515 0 Turn the power on with no magazine loaded. Reset Move the lifter until it The lifter moves up or Check the linear position comes to the STOP down and stops.
  • Page 27 CH-X1500 3.3.2 Feed section Is the voltage output at Is the wiring for IC521 Is 5V present at IC581 Check CD 9V 3 7 63 1515 0 IC521 pin u 5V or 0V? (90) (100) correct? pin 6? and 5V.
  • Page 28 CH-X1500 http://www.xiaoyu163.com 3.3.6 Signal processing section 3 7 63 1515 0 Is the sound output from No sound from either Compare the L-ch and both channels (L, R)? channel. R-ch to locate the defective point. Normal Is 9V present at IC101 pin...
  • Page 29 CH-X1500 3.4 Maintenance of laser pickup 3.5 Replacement of laser pickup (1) Cleaning the pick up lens 3 7 63 1515 0 Before you replace the pick up, please try to clean the lens Turn off the power switch and,disconnect the with a alcohol soaked cotton swab.

  • Page 30: Description Of Major Ics

    CH-X1500 http://www.xiaoyu163.com SECTION 4 Description of major ICs 3 7 63 1515 0 4.1 AK4381VT-X (IC121) : 2ch DAC • Pin layout • Pin functions Pin No Symbol Function MCLK Master clock input pin BICK Audio serial data clock pin...

  • Page 31: Http://Www.xiaoyu163.Com

    CH-X1500 4.2 DB4833FVE-W (IC502) : Voltage detector • Pin layout • Block diagram 3 7 63 1515 0 VOUT Vref • Pin functions Pin No Symbol Function VOUT Reset output Sub slate (connect to GND) N.C. Non connect Power supply voltage...
  • Page 32 CH-X1500 http://www.xiaoyu163.com 4.3 BD7961FM-X (IC681) : Power driver • Pin layout & Block diagram 3 7 63 1515 0 Vcc2 Vcc1 GND3 Vcc3 (REG GND) (POW Vcc BIAS (POW Vcc (POW Vcc CH1~4) CH5/6) REG Vcc) MUTE (CH1~CH4) CONT1 CONT2...
  • Page 33 CH-X1500 4.4 BR24C01AFV-W-X (IC503) : EEPROM • Pin layout 3 7 63 1515 0 • Block diagram 1kbit EEPROM ARRAY 8bit 7bit SLAVE/WORD ADDRESS DATA 7bit DECODER ADDRESS REGISTER REGISTER START STOP CONTROL LOGIC L 13942296513 HIGH VOLTAGE GEN.
  • Page 34 CH-X1500 http://www.xiaoyu163.com 4.5 HD74HCT126T-X : (IC541,IC691) Buffer • Pin arrangement • Pin function 3 7 63 1515 0 Input Output H : High level L : Low level X : Irrelevant Z : Off (Hhigh-impedance)state of a 3-stage output • Block diagram...
  • Page 35 CH-X1500 4.6 NJM4565V-X (IC151) : Dual ope amp • Terminal layout & Pin function 3 7 63 1515 0 AOUTPUT A-INPUT A+INPUT B+INPUT B-INPUT B OUTPUT 4.7 NJU7241F25-X (IC653) : Regulator • Pin layout GND 1 5 STB VIN 2...
  • Page 36 CH-X1500 http://www.xiaoyu163.com 4.9 TA2157FN-X (IC601) : RF amp • Terminal layout 3 7 63 1515 0 • Block diagram PEAK 50 A BOTTOM PEAK L 13942296513 1.75k 240k 15pF x0.5 240k 15pF x0.5 180k 40pF RFGC (APC SW) (TE BAL)
  • Page 37 CH-X1500 • Pin function Pin No. Symbol Function 3 7 63 1515 0 3.3V power supply pin Main-beam amp input pin Main-beam amp input pin Sub-beam amp input pin Sub-beam amp input pin Monitor photo diode amp input pin...
  • Page 38 CH-X1500 http://www.xiaoyu163.com 4.10 TC94A14FA (IC621) : DSP & DAC • Terminal layout & block daiagram 3 7 63 1515 0 Clock generator 1-bit Servo control Digital equalizer Address automatic circuit adjustment circuit Data CLV servo slicer 16 k Synchronous guarantee...
  • Page 39 CH-X1500 Symbol I/O Descroption 3 7 63 1515 0 TMAX O TMAX detection result output pin. TMAX Detection Result TMAX Output Longer than fixed period "PV " Within fixed period "HiZ" Shorter than fixed period "AV " LPFN I Inverted input pin for PLL LPF amp.
  • Page 40 CH-X1500 http://www.xiaoyu163.com 4.11 TC94A20F-011 (IC651) : DAC/SRAM built in type D-ROM decoder+ MP3 decoder • Pin layout 3 7 63 1515 0 • Block diagram Switch L 13942296513 General Timing inputbport generator u163 1-40 http://www.xiaoyu163.com...
  • Page 41 CH-X1500 • Pin functions Pin No Symbol Functions 3 7 63 1515 0 /RESET Hard reset input H:normal L:reset MiMD Micon I/F mode select input /MiCS Micon I/F chip select input /MiLP Micon I/F latch palus input MiDio I/O Micon I/F data input/output...
  • Page 42 Remocon signal input L 13942296513 B.DET Buck up power supply detection P.DET Main power off detection BUS INT JVC BUS communication start interrupu input MP3 REQ CD MP3 request input Non connect EJECT Eject key input VDD0 Connect to 5V...
  • Page 43 CH-X1500 Pin No Symbol Function BUS SCK I/O JVC BUS colck input/ooutput 3 7 63 1515 0 POSMO+ Position motor control output POSMO- Position motor control output TRAYMO+ Tray motor control output TRAYMO- Tray motor control output 52,53 Non connect...
  • Page 44 CH-X1500 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49776) Printed in Japan 2003/01 http://www.xiaoyu163.com...
  • Page 45 CH-X1500 3 7 63 1515 0 SCHEMATIC DIAGRAMS CD CHANGER CH-X1500 CD-ROM No.SML200301 L 13942296513 Area Suffix Northern America Continental Europe Other Areas Contents Block diagram Standard schematic diagrams Printed circuit boards 2-6,7 u163 No.49776 COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.

  • Page 46: Tel 13942296513

    http://www.xiaoyu163.com 3 7 63 1515 0 Safety precaution 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 47 CH-X1500 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 48: Standard Schematic Diagrams

    CH-X1500 3 7 63 1515 0 Standard schematic diagrams Main section (1) R155 3.9K C151 C154 R151 R153 R546 330K 4.7K 2.2K 470P R548 10/16 C152 R152 R154 CDL+ 4.7K 2.2K 10/16 R550 C252 R252 R254 CDR+ 4.7K 2.2K...
  • Page 49 CH-X1500 3 7 63 1515 0 CN902 QNZ0095-001 C154 R162 C161 10/16 470P R262 C261 10/16 C157 C254 Q971 2SA1037AK/R/ 470P Q981 2SD1994/RS/ R971 R982 L 13942296513 Q941 2SB941A/QP/ Q942 2SD1994A/RS/ Q943 KRA102S R942 C509 C512 0.01 Q944 KRC102S...
  • Page 50 CH-X1500 3 7 63 1515 0 CDRW Main sction (2) C611 R613 R611 R610 R614 R612 C610 POS+ R601 POS- R602 R603 330k R604 330k C603 C605 100/6.3 R608 S602 VSH1173-001 0.0068 S603 VSH1173-001 C614 0.01 S604 VSH1173-001 Q601...
  • Page 51 CH-X1500 3 7 63 1515 0 L653 C605 R608 0.0068 C675 47/6.3 C637 0.047 C636 0.047 IC651 C632 470P TC94A20F-011 C631 470P C663 RFGC C658 R674 C665 0.33 R675 C664 0.027 C666 100P C657 C667 0.01 C630 0.033 R677...

  • Page 52: Printed Circuit Boards

    CH-X1500 3 7 63 1515 0 Printed circuit baords Main board (forward side) CN501 CN601 CN904 Q161 R613 Q261 R610 Q981 C601 C602 C261 C983 R257 IC601 R258 C606 C608 C154 C157 C603 C161 Q601 X621 C640 C641 C256...
  • Page 53 CH-X1500 3 7 63 1515 0 Main board (reverse side) CN501 C604 C907 CN601 CN904 C508 C162 C163 R615 D981 C262 R261 C601 Q981 C606 C261 C603 C983 R161 R605 C253 X621 R606 C161 R982 C153 C256 R972 C639...

  • Page 54: Www Ao Co

    CH-X1500 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan 200301 (No.49776SCH) http://www.xiaoyu163.com...

  • Page 55: Parts List

    CH-X1500 3 7 63 1515 0 PARTS LIST [ CH-X1500 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ----------- Continental Europe J -------------- Northern America L 13942296513 U --------------------- Other Areas...

  • Page 56: Ao Y U163

    CH-X1500 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. To mechanism assembly "a" L 13942296513 Silver u163 http://www.xiaoyu163.com...
  • Page 57 SCREW QYSDST2005Z SCREW 2 PWB+TOP QYSDST2606Z SCREW 1 8P+TOP LV21396-001A F.PANEL ASS'Y L 13942296513 LV21396-002A F.PANEL ASS'Y F.PANEL ASS'Y 1 FOR CH-X1500 LV21396-004A LV30786-003A HOLD BRACKET QYSDSF2005Z SCREW 2 DOOR-3+HOLD BKT NAME PLATE LV33919-001A LV33920-001A NAME PLATE LV33921-001A NAME PLATE...
  • Page 58 CH-X1500 3 7 63 1515 0 CD changer mechanism assembly and parts list Block No. Grease = JC-525 = MOBIL-1 = CFD-931 = JC-803B The edge part on the back side 41-3 41-5 41-4 41-5 41-2 41-1 41-4 42-2...
  • Page 59 CH-X1500 3 7 63 1515 0 Parts list (CD changer mechanism) Block No. MAMM Item Parts number Parts name Q'ty Description Area LV30096-004A CHASSIS(L)ASSY LV40123-006A LIFT ARM ASSY LV30098-003A EJECT SLIDER LV40126-005A EJECT SPRING VYSH102-102 SPACER VYSA1R4-056 SPACER LV30097-001A...
  • Page 60 CH-X1500 3 7 63 1515 0 Parts list (CD changer mechanism) Block No. MAMM Item Parts number Parts name Q'ty Description Area REE1500X E RING LV30120-001A T.MOTOR HOLDER PPN-13KA10C MOTOR QUB540-10A2A2 WIRE(T.MOTOR) QUB541-11A2A2 WIRE(T.MOTOR) QYSPSPL2004Z SCREW QYSDST2004Z SCREW QYSDST2004Z...
  • Page 61 CH-X1500 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 121 NCB31CK-104X C CAPACITOR C 637 NCB31CK-473X C CAPACITOR C 122...
  • Page 62 CH-X1500 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area CN902 QNZ0095-001 CONNECTOR R 161 NRSA63J-223X MG RESISTOR CN903 QGF1013F1-10X FPC CONNECTOR...
  • Page 63 CH-X1500 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 606 NRSA63J-220X MG RESISTOR R 981 NRSA63J-221X MG RESISTOR R 607...
  • Page 64 CH-X1500 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1~A8 KIT : A12,A13 L 13942296513 u163 3-10 http://www.xiaoyu163.com...
  • Page 65 1 THA LVT0975-008A INST BOOK 1 KOR LVT0975-001A INST BOOK 1 ENG,SPA,FRE BT-51018-3 WARRANTY CARD BT-51028-2 J=REGIST CARD BT-20071B JVC CENTER LIST L 13942296513 BT-52006-2 WARRANTY CARD LVT0770-002C INST SHEET LVT0918-001B INST SHEET LVT0770-003C INST SHEET 1 MP3 LVT0327-001B TROUBLE SHOOTIN...

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