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JVC KV-DV7 Service Manual

Dvd/cd player
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SERVICE MANUAL
DVD/CD PLAYER
Contents
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
E
Continental Europe
J
Northern America
UF
UT
US
Singapore
A
1-2
1-3
1-4
1-11
1-12~17
KV-DV7
China
Taiwan
Australia
No.49630
Apr. 2001

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  Summary of Contents for JVC KV-DV7

  • Page 1: Table Of Contents

    KV-DV7 SERVICE MANUAL DVD/CD PLAYER KV-DV7 Area Suffix Continental Europe Northern America China Taiwan Singapore Australia Contents Safety precaution Important for laser products Disassembly method Adjustment method 1-11 Description of major ICs 1-12~17 No.49630 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
  • Page 2: Kv-Dv7

    KV-DV7 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...
  • Page 3: Important For Laser Products

    KV-DV7 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.
  • Page 4: Disassembly Method

    KV-DV7 Top cover Disassembly method < Main Body> Removing the top cover (See Fig.1 to 3) Remove the seven screws A on both sides and back of the body. Detach the rear part of the top cover upward and Fig.1 release the joint a on the top side.
  • Page 5 KV-DV7 Removing the front panel assembly (See Fig.4 to 6) Prior to performing the following procedure, remove the top cover. Remove the screw B attaching the ground on the top of the body. Remove the four screws C and two screws C' attaching the front panel assembly on both sides of the body.
  • Page 6 KV-DV7 Removing mechanism assembly (See Fig.7 to 11) Prior to performing the following procedure, remove the top cover and the front panel assembly. Remove the four screws D attaching the DVD mechanism assembly on the top of the body. Joint c...
  • Page 7 KV-DV7 Rear panel Removing the main board Main board (See Fig.12 to 15) Prior to performing the following procedure, remove the top cover, the front panel assembly and the DVD mechanism assembly. Disconnect the wire from connector CN781 on the CN781 main board.
  • Page 8 KV-DV7 Removing the fan assembly Fan assembly (See Fig.16 and 17) CN781 Rear panel Prior to performing the following procedure, remove the top cover, the front panel assembly and the DVD mechanism assembly. REFERENCE: It is not unnecessary to remove the main board and the rear panel.
  • Page 9 KV-DV7 Replacing the DVD door flame Eject button DVD door flame (See Fig.19 to 24) Prior to performing the following procedure, remove the front panel assembly and the control switch board. Remove each button on the back of the front panel.
  • Page 10 KV-DV7 Removing the DVD door Joint g Gear assembly DVD door (See Fig.25 to 29) Prior to performing the following procedure, remove the front panel assembly, the control switch board and the DVD door flame. Remove the screw N attaching the gear assembly on the back of the front panel.
  • Page 11: Adjustment Method

    KV-DV7 Adjustment method This model dose not have adjustment. If you change printed circuit board or mechanism assembly, please check as folow as next. Test instruments required for checking (1) Digital oscilloscope (100MHz) (2) AM standard signal generator (3) FM standard signal generator...
  • Page 12: Description Of Major Ics

    KV-DV7 Description of major ICs UPD780058GC-250 (IC701) : Micon 1. Pin layput 2. Pin function (1/2) Pin No. Symbol Function TEMP Templature sensor Non connect Non connect AVSS Audio ground LCDCONT LCD control D_OUT_MUTE DIgital out mute AVREF1 Anarog reference voltage...
  • Page 13 KV-DV7 2. Pin function (2/2) Pin No. Symbol Function LCDRST Non connect JBUS_I/O J-BUS I/O S1_CONT S1 control SIDE_BRAKE Side brake detection HEADPHONE Headphone detection REMOCON_SEL Remocon code select SB_SEL_V Side brake select SB_SEL_OP Side brake select LCD/PC_SEL Communication select...
  • Page 14 KV-DV7 BA4901A-V3 (IC911) : Regulator 1. Pin layout 2.Pin Function Pin No. Symbol Descriptions VCC-C To be connected with the collector of PNP. VCC-B To be connected with the base of PNP. ACC5V A voltage supply for ACC block. ACC.IN Control of the COMP output by inputting voltage.
  • Page 15 KV-DV7 IC-PST9333U-X (IC741) : Regulator 1. Pin layout 2. Block diagram VOUT VOUT 3. Pin function Pin No. Symbol Function Non connect GND terminal VOUT Reset signal output terminal Vcc terminal/Voltage detect terminal NJM2267X-X (IC301) : Video amp. 1. Pin layout 2.
  • Page 16 KV-DV7 NJM4580V-X (IC101,IC151) : Ope amp. PQ05RD21 (IC961) : Regulator 1. Block diagram 1. Pin layout & Block diagram Vin 1 2 Vo A OUTPUT A-INPUT B OUTPUT A+INPUT B-INPUT B+INPUT RPM6938-V4 (IC801) : Remocon reseiver 1. Block diagram Comp...
  • Page 17 KV-DV7 TC9260F-X (IC131) : E. volume 1. Pin layout 2. Pin function Pin No. Symbol Function Digital ground terminal L-OUT Volume output terminal L-IN Volume input terminal L-LD1 Tap out terminal for loudness(1) A-GND A-GND L-LD2 Tap out terminal for loudness(2)
  • Page 18 KV-DV7 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan 200104 (No.49630)
  • Page 19: Block Diagram

    KV-DV7 Block diagram IC301 VIDEO_OUT V_OOUT1,V_OUT2 VIDEO L_CH R_CH IC101 IC131 IC151 LOUT DAC LPF H.P. H.P. ROUT L_CH,R_CH E.VOL E.VOL_STB MECHA NTSC/PAL,D_MUTE E.VOL_DO UNIT E.VOL_SCK IC511 IEC958 D_OUT_MUTE DIGITAL REMOCON IC701 REMIN RDT_FM,D_FM,ATN_FM MICON D_HOST,HOST_RST,SCL ANI0 ANI1 ANI2 HEAD_PHONE FAN CONT HP.L_CH...
  • Page 20 KV-DV7 KV-DV7 Standard schematic diagrams Stanard chematic diagram Main section J301 QNN0400-002 R309 C305 R314 R303 C306 2200/10 IC501 IC511 QNZ0487-002 TC7SET08F-X CN701 QGF1013F1-20X C303 C304 R302 R313 IC961 IC951 B701 PQ05RD21 LM2596S-ADJ-W 2200/10 L511 B702 NTSC/PAL NQL011K-4R7X L953 QQLZ032-4R7...
  • Page 21 KV-DV7 AV decoder section...
  • Page 22 KV-DV7 KV-DV7 VIDEO encoder section...
  • Page 23 KV-DV7 Audio decoder section...
  • Page 24 KV-DV7 KV-DV7 Analog output section SHIELD...
  • Page 25 KV-DV7 DVD servo control section...
  • Page 26 KV-DV7 KV-DV7 Printed circuit boards Main board (Forward side) Main board (Reverse side) C511 C502 IC511 CN901 R804 CN761 R314 J301 Q221 R220 D901 R803 D801 D901 IC501 R807 IC501 J801 D121 J801 R305 L901 CN901 D902 J301 D902 R122...
  • Page 27 KV-DV7 Frontend board (Forward side) (Reverse side)
  • Page 28 KV-DV7 KV-DV7 Backend board (Forward side) Backend board (Reverse side) 2-10...
  • Page 29: Parts List

    KV-DV7 PARTS LIST [ KV-DV7 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ----------- Continental Europe J -------------- Northern America UF --------------------------- China UT -------------------------- Taiwan US --------------------- Singapore A ------------------------- Australia...
  • Page 30 KV-DV7 Exploded view of general assembly and parts list Block No. TYPE 1 TYPE 2 Main board...
  • Page 31 KV-DV7 Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area BDL1130-001MSV MECHA FRONTEND BDL1130-001MA BACKEND P.W.B. BDL1130-001ME BACKEND P.W.B. BDL1130-001MJ BACKEND P.W.B. BDL1130-001MUF BACKEND P.W.B. BDL1130-001MUS BACKEND P.W.B. BDL1130-001MUT BACKEND P.W.B. LV10475-001A MECHA BKT(F)
  • Page 32 KV-DV7 Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area LV42021-001A JVC BUDGE LE40564-002A MARK LV42138-001A T.SPRING(D0OR) LV42139-001A T.SPRING(LOCK) LV42140-001A COM.SP(RELE.BU) VKZ4777-003 MINI SCREW FRONT+REAR VKZ4777-003 MINI SCREW F.PANEL+SW.PWB QYSDSF2006Z SCREW F.PANEL+DAM.BKT LV32503-001A NAME PLATE...
  • Page 33 KV-DV7 Electrical parts list (Main board) Block No. 01 Item Remarks Item Parts number Parts name Remarks Area Parts number Parts name Area C 101 QEKJ1AM-107Z E CAPACITOR 100MF 20% 10V C 801 NBE21AM-106X E CAPACITOR C 102 NCB31CK-104X C CAPACITOR...
  • Page 34 KV-DV7 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area IC971 TA78L05F-X R 175 NRSA63J-102X MG RESISTOR J 301 QNN0400-002 PIN JACK R 211 NRSA63J-104X MG RESISTOR...
  • Page 35 KV-DV7 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area R 734 NRSA63J-472X MG RESISTOR R 735 NRSA63J-103X MG RESISTOR R 736 NRSA63J-331X MG RESISTOR R 737 NRSA63J-473X MG RESISTOR R 741 NRSA63J-222X MG RESISTOR...
  • Page 36 KV-DV7 Packing materials and accessories parts list Block No. Block No. A17,A18 KIT:A9...
  • Page 37 KV-DV7 Parts list (Packing) Block No. M2MM Item Parts number Parts name Q'ty Description Area LV32504-001A CARTON LV10479-001A CUSHION(L) LV10480-001A CUSHION(R) LV42522-001A PROTECTOR(SLEEV VPE3005-064 POLY BAG QPA01703505P POLY BAG QPA00801205 POLY BAG QPA01003003 POLY BAG FOR TRIM PLATE QPA01203505 ENVELOPE...