JVC KW-R900BTJ Service Manual
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JVC KW-R900BTJ Service Manual

JVC KW-R900BTJ Service Manual

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SERVICE MANUAL
1 S ERVICE MANUAL
2012
MA520<Rev.001>
KW-R900BTJ, KW-R900BTU
COPYRIGHT © 2012 JVC KENWOOD Corporation
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)
CD RECEIVER
COPYRIGHT © 2012 JVC KENWOOD Corporation
For us
No.MA520<Rev.001>
2012/1

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  • Page 1 KW-R900BTJ, KW-R900BTU For us COPYRIGHT © 2012 JVC KENWOOD Corporation 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) No.MA520<Rev.001>...

  • Page 2: Usb Section

    SPECIFICATION For US AUDIO AMPLIFIER SECTION 20 W RMS x 4 Channels at 4 Ω and ≤ 1% THD+N Power Output 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4Ω) Line-Out or Subwoofer-Out Level/Impedance 5 V/20 kΩ...
  • Page 3 SPECIFICATION For ASIA AUDIO AMPLIFIER SECTION Maximum Power Output 50 W per channel Continuous Power Output (RMS) 20 W per channel into 4Ω, 40 Hz to 20 000 Hz at less than 1% total harmonic distortion. Load Impedance 4 Ω (4 Ω to 8 Ω allowance) Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio...
  • Page 4 SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...
  • Page 5 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. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.

  • Page 6: Class 1 Laser Product

    Important for laser products 1.CLASS 1 LASER PRODUCT 5.CAUTION : If safety switches malfunction, the laser is able to function. 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation 6.CAUTION : Use of controls, adjustments or performance of when open.

  • Page 7: Specific Service Instructions

    This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY Main body (Used model: KW-R900BTJ) 3.1.1 Removing the Front panel (See Fig.1) (2) Remove the 3 screws C attaching the Bottom chassis. (1) Remove the 2 screws A attaching the both side of the Front (See Fig.3)
  • Page 8 (2) Remove the 3 screws K attaching the Electric unit. (See 3.1.5 Removing the Switch unit (See Fig.8) Fig.5) (1) Remove the Volume knob. (2) Disconnect the connector wire connected to connector CN602 of the Switch unit. (3) Remove the 13 screws M attaching the Switch unit. CN602 Fig.5 Fig.8...
  • Page 9 CD mechanism assembly section 3.2.2 Removing the Traverse mechanism (See Fig.4, 5) (1) Remove the 5 springs from the traverse mechanism. (See 3.2.1 Removing the Mecha control board Fig.4) (1) Solder the short land on the pickup. (See Fig. 1) SOLDER Fig.4 Fig.1...
  • Page 10 (2) Remove the shaft from the TM base. (See Fig.7) (2) Remove the HC CL. base from the holes on the TM base. (3) Disengage the hook a on the pickup from the TM base. (See Fig.9) (See Fig.7) shaft Fig.9 (3) Remove the 2 screws D attaching the spindle motor.
  • Page 11 3.2.5 Removing the Loading motor (1) Remove the roller arm assembly from the bottom frame as- sembly. (See Fig.11) Fig.11 (2) Remove the 2 screws E attaching the loading motor as- sembly, and then remove the loading motor assembly in the direction of the arrow.

  • Page 12: Section 4 Adjustment

    SECTION 4 ADJUSTMENT General Mode Functions 4.1.1 Micon Software / Firmware Version Checking Mode 4.1.5 Bluetooth Test Mode Refer to “Service Mode” . Key to enter: (1) In any Source 4.1.2 Service Mode (2) Press and hold [BACK] + [POWER] 3s Refer to “Service Mode”...
  • Page 13 Service Mode Force Eject mode Long Press [Eject] 1DIN: No display on screen as panel will be flipped down. 2DIN: Normal pattern + Eject Service mode Key to enter: (1) In any Source (2) Press and hold [MENU] + [DOWN] for 3s (3) Mode Select: [VOL] turn VOL press S e r v i c e M o d e...
  • Page 14 VOL press C D S e r v i c e M o d e Sequence and description of Labels:- BACK press FG0:- Focus gain automatic adjustment value in normal-speed mode (for setting use) FEXP0:- Focus gain automatic adjustment value in normal-speed mode (for setting use) FBAL:- Focus balance adjustment value FRR:- Focus low-band feedback coefficient...

  • Page 15: Section 5 Troubleshooting

    DC Offset error description 4.3.5 Manipulate after detect DC Offset • If detected error 10 consecutive times, and 10th error occurred 4.3.1 DC Offset detection circuit design in "Mis-connect detection period", judge as "Mis-connect". • Purpose: • If detected error 10 consecutive times, and 10th error occurred To prevent breakdown, burning and emitting smoke from cus- in "Capacitor leak detection period", judge as "Capacitor leak ".
  • Page 16 JVC KENWOOD Corporation Car Electronics Business Group 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525, Japan (No.MA520<Rev.001>) Printed in Japan...

  • Page 17: Schematic Diagrams

    SCHEMATIC DIAGRAMS CD RECEIVER KW-R900BTJ KW-R900BTU (No.MA520<Rev.001>)1/18...
  • Page 18 ■ PRECAUTIONS ON SCHEMATIC DIAGRAMS Due to the improvement in performance, some part numbers shown in the circuit diagrams may not agree with those indicated in the Parts List. The parts numbers, values and rated voltage etc. in the Schematic Diagrams are for reference only.
  • Page 19 BLOCK DIAGRAM J321 LINE OUT ELECTRIC UNIT USB UNIT LINE OUT REAR IC491 FLG0, FLG1 IC442 IC441 REAR L MUTING REAR & FRONT 1.8V IC921 REAR R FLASH ROM SDRAM IC931 CIRCUIT LINE OUT FRONT 14.4V MEM REGULATOR 3.3V LDO DC/DC &...

  • Page 20: Electric Unit

    USED/NOT USED NOT USED/USED R811 3.3V QNZ0095-001 0.047 AUTO ANTENNA CIRCUIT NOT USED USED RT1P241C-X CHANGER CONTROL 100K 3.2V JVC BUS CIRCUIT, R759, R762, R763,R764, R765, C163, C173 USED NOT USED 4.9V J-CLK WPIN 4.9V R772 C802 3.3V A-GND R810 R801...
  • Page 21 ELECTRIC UNIT-2 USB5V USB5V UH0+ UH0+ UH0- UH0- USBTX USBRX TRST TRST MUTE.CTL MUTE.CTL 3.3V D501 Q501 2SB1424/R/-W USB3.3V R520 D502 3.4V 5.4V GS1J-LTP-X GS1J-LTP-X R526 HOT! 4.8V C537 820p R509 8.2k C504 R510 8.2k 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 To ELECTRIC UNIT-1 R517...

  • Page 22: Switch Unit

    SWITCH UNIT D609 D610 NSSM065T-X NSSM065T-X FOR PROGRAMMING MICON IC661 SWITCH PWB : GEB10329A1 EN601 ENCODER REMOCON QSW1231-002 VOL1 VOL2 IC681 B642 CN601 C669 C668 KSM-2003TN5B QGB1004J2-24X SELECT 0.047 KEY MATRIX 0.047 USB5V 3.3V 3.3V R625 R624 R623 R622 R621 USB5V 2.7K 1.8K...
  • Page 23 USB UNIT K442,K443,K444, NQR0286-007X CN441 X401: NAX1168-001X 12MHz QGG2011M1-18X X401 K444 B.MUTE USB0.EN NOR FLASH K450 SDRAM R404 K443 USB1.EN K441 NQR0502-001X K449 R405 IC441 IC442 K442 CD16M R407,K445: R468 NQR0286-007X EN29LV320BT70TI C443 A3V28S40FTP-G6 R406: XA16 22/6.3 C444 R469 NQR0022-005X USB3.3V XA15 3.0V...
  • Page 24 CD PLAYER UNIT PICKUP A'SSY LVB11141-A1 OPTIMA-750B1 CN102 QGF0522F3-15W TRACKING- TRACKING- TRACKING+ TRACKING+ FOCUS+ FOCUS+ FOCUS- FOCUS- SPINDLE FOCUSING COIL TRACKING COIL MOTOR CN101 QGF1044F2-26X LVB11141-A2 FOCUS+ FOCUS- NSW0291-001X TRACKING+ REST REST TRACKING- MGND REST SW FEED- FEED+ SPINDLE- SPINDLE+ FEED LOADING+ To ELECTRIC UNIT-2...
  • Page 25 ELECTRIC UNIT (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)) No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)9/18...
  • Page 26 ELECTRIC UNIT (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)) C308 C307 IC301 J801 C319 C320 B308 CN901 C321 B306 B307...
  • Page 27 SWITCH UNIT-1 (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)) D620 D621 S671 S666 S676 IC681 GEA10329- S661 S662 S670 S668...
  • Page 28 SWITCH UNIT-1 (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)) R630 R626 C611 C610 C682 C681 R654 RA663 D682 R620 R683...
  • Page 29 SWITCH UNIT-2 (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)) D610 D609 No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)13/18...
  • Page 30 SWITCH UNIT-2 (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)) No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)14/18...
  • Page 31 USB UNIT (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)) 1P3A R423 X401 C492 R415 C407 1:TDI 3:TCK 2:TMS C493 C408...
  • Page 32 USB UNIT (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)) 4P3A C453 CN441 C451 GEB10288A C452 R435 R403 IC442 R458 C427...

  • Page 33: Cd Player Unit

    CD PLAYER UNIT-1 (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)) CN102 CN101 REST MGND No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)17/18...
  • Page 34 CD PLAYER UNIT-2 (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)) LVA11141-A2 No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)18/18...

  • Page 35: Parts List

    PARTS LIST CD RECEIVER KW-R900BTJ KW-R900BTU (No.MA520<Rev.001>)1/22...
  • Page 36 ■ PRECAUTIONS ON SCHEMATIC DIAGRAMS Due to the improvement in performance, some part numbers shown in the circuit diagrams may not agree with those indicated in the Parts List. The parts numbers, values and rated voltage etc. in the Schematic Diagrams are for reference only.
  • Page 37 EXPLODED VIEW (UNIT) Block No. M1MM LCD1 702(1/2) 702(2/2) Parts with the exploded numbers lager than 700 are not supplied. No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)3/22...
  • Page 38 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local EXPLODED VIEW (UNIT) <M1MM> QMFZ064-100-J1 FUSE WJT0296-001A-E E-CARD WIRE LCD1 QLD0705-001 LCD MODULE GE34823-011A FRONT PANEL ASSY QYSDSF2006ZA TAP SCREW M2 x 6mm QYSDST2604ZA TAP SCREW M2.6 x 4mm...
  • Page 39 EXPLODED VIEW (CD MECHANISM) Block No.MBMM FLM-HC3-1D Grease BOTTOM VIEW JVG-31N G332 JVS-1003 BACK SIDE VIEW BOTTOM VIEW TOP VIEW TOP VIEW 11.7mm±0.1mm REST SWITCH UNIT DPU1 FPC1 BOTTOM VIEW 12.7mm±0.1mm CD PLAYER UNIT SIDE VIEW Parts with the exploded numbers larger than 700 are not supplied. No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)5/22...
  • Page 40 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local EXPLODED VIEW (CD MECHANISM: FLM-HC3-1D) <MBMM> CM-FLMHC1D SPINDLE MOTOR ASSY QAR0144-003 MOTOR 2.0V DC QAR0144-003 MOTOR 2.0V DC DPU1 QAL1226-001 PICK UP FPC1 QAL0817-003 QYSPSPT2025MA SCREW M2 x 2.5mm...
  • Page 41 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local Q782 RT1P141C-X DIGI TRANSISTOR Q783 DRC2124E-X DIGI TRANSISTOR Q783 RT1N241C-X DIGI TRANSISTOR Q784 DRA2124E-X DIGI TRANSISTOR Q784 RT1P241C-X TRANSISTOR Q881 DRC2114E-X DIGI TRANSISTOR Q881 RT1N141C-X...
  • Page 42 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local C100 NCB31HK-273X C CAPACITOR 0.027uF 50V K C101 NDC31HJ-220X C CAPACITOR 22pF 50V J C102 NCB31HK-333X C CAPACITOR 0.033uF 50V K C103 QEKJ1CM-226Z E CAPACITOR...
  • Page 43 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local C365 QEKJ1EM-106Z E CAPACITOR 10uF 25V M C366 QEKJ1EM-106Z E CAPACITOR 10uF 25V M C367 QEKJ1AM-227Z E CAPACITOR 220uF 10V M C368 QEKJ1AM-227Z E CAPACITOR...
  • Page 44 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local C722 NCB31HK-103X C CAPACITOR 0.01uF 50V K C723 QEKJ0JM-337Z E CAPACITOR 330uF 6.3V M C724 NDC31HJ-101X C CAPACITOR 100pF 50V J C725 NCB10JK-106X-A C CAPACITOR 10uF 6.3V K...
  • Page 45 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local R102 NRSA63J-0R0X MG RESISTOR 0Ω 1/10W J R103 NRSA63J-0R0X MG RESISTOR 0Ω 1/10W J R104 NRSA02J-0R0X MG RESISTOR 0Ω 1/10W J R161 NRSA63J-0R0X MG RESISTOR 0Ω...
  • Page 46 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local R515 NRSA63J-562X MG RESISTOR 5.6kΩ 1/16W J R516 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R517 NRSA63J-682X MG RESISTOR 6.8kΩ 1/16W J R518 NRSA63J-822X MG RESISTOR 8.2kΩ...
  • Page 47 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local R745 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R746 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R747 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R748 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 48 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local QQL244J-561Z COIL 560uH J QQL244J-561Z COIL 560uH J NQL093K-4R7X P COIL 4.7uH K NQL093K-R47X P COIL 0.47uH K NQR0269-026X FERRITE BEADS 10.500mA L161 NQL553J-27NX COIL...
  • Page 49 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local D693 RKZ6.2B2KG-X Z DIODE D693 DZ2J062/M/-X Z DIODE C601 NCB31CK-104X C CAPACITOR 0.1uF 16V C602 NCB31CK-105X C CAPACITOR 1uF 16V K C604 NBE21CM-106X TA E CAPACITOR...
  • Page 50 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local R684 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J R685 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R687 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R689 NRSA63J-472X MG RESISTOR 4.7kΩ...
  • Page 51 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local C445 NDC31HJ-561X C CAPACITOR 560pF 50V J C446 NDC31HJ-561X C CAPACITOR 560pF 50V J C447 NDC31HJ-561X C CAPACITOR 560pF 50V J C448 NDC31HJ-561X C CAPACITOR...
  • Page 52 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local L407 NQR0022-005X FERRITE BEADS L491 NQL79GM-4R7X COIL 4.7uH M L601 NQL79GM-470X COIL 47uH M CN441 QGG2011M1-18X CONNECTOR (1-18) CN442 QGG2011M1-18X CONNECTOR (1-18) CN444 QGG2504M5-02 CONNECTOR...
  • Page 53 PACKING AND ACCESSORIES (US) Block No.M3MM No additional / supplemental order of WARRANTY CARDs are available. Parts with the exploded numbers lager than 700 are not supplied. No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)19/22...
  • Page 54 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local PACKING AND ACCESSORIES(US) <M3MM> QAM1331-001 DC CORD RM-RK52M REMOCON UNIT GET0808-001A INST BOOK ENG SPA FRE GET0808-002A INSTALL MANUAL ENG SPA FRE ------------ WARRANTY CARD...
  • Page 55 PACKING AND ACCESSORIES (ASIA) Block No.M4MM No additional / supplemental order of WARRANTY CARDs are available. <TOP SIDE> Parts with the exploded numbers lager than 700 are not supplied. No.MA520 created date:2012-01-17 (No.MA520<Rev.001>)21/22...
  • Page 56 MODEL MARK MODEL MARK KW-R900BTJ KW-R900BTU Safe Symbol No. Parts No. Parts Name Description Local PACKING AND ACCESSORIES(ASIA) <M4MM> QAM1332-001 DC CORD RM-RK52M REMOCON UNIT GET0809-001A INST BOOK ENG CHI(TAIWAN) GET0809-002A INST BOOK RUS THA ARA PER GET0809-003A INSTALL MANUAL...

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