JVC UX-GD7 Service Manual
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JVC UX-GD7 Service Manual

JVC UX-GD7 Service Manual

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  • Page 2: Table Of Contents

    SERVICE MANUAL MICRO COMPONENT SYSYTEM MB422 2005 UX-GD7 Area suffix B ------------------------------ U.K. E ---------- Continental Europe EN ----------- Northern Europe EV ------------- Eastern Europe EE -------- Russian Federation SP-UXGD7 CA-UXGD7 SP-UXGD7 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS PRECAUTIONS .

  • Page 3: No.mb422)1

    SPECIFICATION Amplifier section Output power 140 W (70 W + 70 W) at 6Ω(10% THD) Analog input Sensitivity/Impedance (at 1 kHz): 400 mV/47 kΩ USB input USB Ver.1.1 Digital output OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm ±30 nm) VIDEO OUT Color system Video (composite)

  • Page 4: Precautions

    SECTION 1 PRECAUTIONS 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 1.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment parts must be identical to those used in the original circuits.

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB422)1-5...

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Disassembly of the main blocks of the set Replacement of the fuses and the power IC. 3.1.1 Replacing the fuses (See Fig. C) • Prior to performing the following procedure, remove the rear cover. (1) Replace the fuses inside. Caution: Be sure to use fuses with the specified ratings.
  • Page 8 MAIN BODY 3.2.1 Removing the Metal Side Left and the Metal Side Right (See Fig. 1-1, Fig. 1-2 and Fig. 1-3) (1) Unscrew the 10 screws A from the Rear Panel, the Top Cover and the Chassis Main. (2) Remove the Metal Side Left and the Metal Side Right. Fig.1-1 Fig.1-2 Fig.1-3...
  • Page 9 3.2.2 Removing the Top Cover (See Fig. 2-1, Fig. 2-2 and Fig. 2-3) (1) Unscrew the 2 Screws B and 2 Screws C. (2) Removing the Top Cover. Fig.2-1 Fig.2-2 Fig.2-3 1-8 (No.MB422)
  • Page 10 3.2.3 Removing the Cabinet Front (See Fig. 3-1, Fig. 3-2, Fig. 3-3 and Fig. 3-4) (1) Unscrew the 3 Screws D from the Chassis Main. (2) Pulling out the 3 cable connectors from the Main Board unit and the AMP Board unit then removing the Cabinet Front. Fig.3-3 Connector Fig.3-1...
  • Page 11 3.2.4 Removing the Cover Heat Sink and the Fan (See Fig.4-1, Fig.4-2 and Fig.4-3) (1) Unscrew the 5 Screws E from the Chassis Main and the Rear Panel. (2) Pulling out the cable connector from the AMP Board then removing the Cover Heat Sink and the Fan. (3) Unscrew the 4 Screws M from the Fan.
  • Page 12 3.2.5 Removing the Rear Panel the Tuner and the Speaker Board (See Fig.5-1, Fig.5-2 and Fig.5-3) (1) Unscrew the 15 screws C from the Main Board unit, the Tuner, the Heat Sink, the Chassis Main and the scart Board unit. (2) Pulling out the 2 cable connectors from the AMP Board unit and the Power Board unit then removing the Panel Rear, the Tuner and the Speaker Board.
  • Page 13 CABINET FRONTCHASSIS MAIN ASSEMBLY 3.3.1 Removing the Knob Volume, the Display Board and the USB Board (See Fig.6-1 and Fig.6-2) • Prior to performing the following procedure before removing the Display Board. (1) Pulling out the Knob Volume from the Display Board. (2) Unscrew the 15 screws F from the Cabinet Front, then tak- ing out the Display Board and the USB Board.
  • Page 14 3.3.2 Removing the Main Board and the Power Board (See Fig.7-1, Fig.7-2, Fig.7-3 and Fig.7-4) (1) Pulling out the 5 cable connectors from Main Board unit and the Power Board unit. (2) Unscrew the 4 screws G from the Mechanism Holder. (3) Separating the Main Board and the Power Board from the AMP Board vertically.
  • Page 15 3.3.3 Removing the AMP Board and the Main Heat Sink (See Fig.8-1 and Fig.8-2) (1) Unscrew the 3 screws G and 1 screw C from the Mecha- nism Holder, then removing the AMP Board. (2) Unscrew the 2 screws H then removing the Main Heat Sink. Fig.8-1 Fig.8-2 1-14 (No.MB422)
  • Page 16 3.3.4 Removing the Mechanism Holder (See Fig.9-1 and Fig.9-2) (1) Unscrew the 4 screws I from the Mechanism Holder. (2) Removing the Mechanism Holder. Fig.9-1 Fig.9-2 (No.MB422)1-15...
  • Page 17 3.3.5 Removing the DVD Mechanism (See Fig.10-1, Fig.10-2 and Fig.10-3) Caution: The DVD Mechanism may be taken out only when the Rear Panel, the Tuner, the Speaker Board, the Main Board, the Power Board, the AMP Board, the Mechanism Front Holder and the Mechanism Back Holder have been taken away.

  • Page 18: Adjustment

    SECTION 4 ADJUSTMENT Measurement instruments required for adjustment Frequency Range (1) Low frequency oscillator. AM 522kHz to 1629kHz This oscillator should have a capacity to output 0dB to FM 87.5MHz to 108MHz 600Ω at an oscillation frequency of 50Hz-20kHz. (2) Attenuator impedance : 600Ω Standard measurement positions of volume and (3) Electronic voltmeter switch...
  • Page 19 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB422) Printed in Japan...

  • Page 20: Parts List

    PARTS LIST [ UX-GD7 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix B ------------------------------- U.K. E ----------- Continental Europe EN ------------ Northern Europe EV -------------- Eastern Europe EE --------- Russian Federation...
  • Page 21 Exploded view of general assembly and parts list Block No. Amp boa F901 Power trans board...
  • Page 22 Amp board Main board Front board The parts without symbol number are not service.
  • Page 23 General Assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local  BI1080999101V1 FRONT CABINET HIPS-8002 94V2 BI1081000101V1 WINDOW LENS SAN-C-2495 94HB BI1080800101V1 VOLUME KNOB ABS-T700 94HB BI1080920101V1 USB PANEL HIPS-470 94HB BI1080930101V1 DVD DOOR HIPS-470 94HB BI1080980101V1 DISC PANEL ABS-T700 94HB BI202917010101...

  • Page 24: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] C414 BICC104500ZA04 C CAPACITOR 0.1uF 50V  Symbol No. Part No. Part Name Description Local C415 BICE107100MP01 E CAPACITOR 100uF 10V C416 BICE107160MP11 E CAPACITOR 100uF 16V C417...
  • Page 25  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C554 BICE477063MP01 E CAPACITOR 470uF 6.3V R435 BIRC1220105A00 C RESISTOR 1.2KΩ 1/10W C555 BICC330500JA04 C CAPACITOR 33pF 50V R436 BIRC1220105A00 C RESISTOR 1.2KΩ...
  • Page 26  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R542 BIRC1020105A00 C RESISTOR 1KΩ 1/10W R677 BIRC1030105A00 C RESISTOR 10KΩ 1/10W R543 BIRC1020105A00 C RESISTOR 1KΩ 1/10W R678 BIRC1020085M00 C RESISTOR 1KΩ...

  • Page 27: Front Board

     Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local JR701 BIRC0000105A00 C RESISTOR 0Ω 1/10W C804 BICC102500JA04 C CAPACITOR 1000pF 50V 2P2T C805 BICC472500KA04 C CAPACITOR 4700pF 50V S601 BI804841V SLIDE SSAF122NA011 C806 BICC472500KA04...

  • Page 28: Amp Board

     Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R853 BIRC1010105A00 C RESISTOR 100Ω 1/10W W865 BI11AT120B0V WIRE R854 BIRC1010105A00 C RESISTOR 100Ω 1/10W X861 BI2102391V CRYSTAL 12MHz R855 BIRC1010105A00 C RESISTOR 100Ω...
  • Page 29  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C114 BICC103500KA04 C CAPACITOR 0.01uF 50V R245 BIRM0022N25N00 M RESISTOR 0.22Ω 2W C115 BICE477160MP01 E CAPACITOR 470uF 16V R246 BIRM0022N25N00 M RESISTOR 0.22Ω...
  • Page 30  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local  CN905 BI12S80060V CONNECTOR D901 1N4002 DIODE BI31N4002M000V3 CN906 BI12S120051V CONNECTOR D902 1N4002 DIODE BI31N4002M000V3 CN907 BI12S150025V CONNECTOR D903 1N4002 DIODE BI31N4002M000V3 ...

  • Page 31: Packing Materials And Accessories Parts List

    Packing materials and accessories parts list Block No. No additional / supplemental order of WARRANTY CARDs are available. A4 A5 A1 A2 3-12...
  • Page 32 Packing and Accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  BI440001541000 INST BOOK ENG LVT1348-003A BI440001543000 INST BOOK GER FRE DUT LVT1348-004A BI440001579000 INST BOOK RUS LVT1348-007A BI440001577000 INST BOOK SWE FIN DAN GER FRE SPA ITA LVT1348-005A EN BI440001582000 INST BOOK CZE POL HUN LVT1348-006A...

  • Page 33: Micro Component System

    SCHEMATIC DIAGRAMS MICRO COMPONENT SYSTEM UX-GD7 CD-ROM No.SML200508 Area suffix B ------------------------------ U.K. E ---------- Continental Europe EN ----------- Northern Europe EV ------------- Eastern Europe EE -------- Russian Federation SP-UXGD7 CA-UXGD7 SP-UXGD7 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
  • Page 34 In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
  • Page 35 Block diagram...
  • Page 36 Standard schematic diagrams Power supply section Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 37 Amp section...
  • Page 38 Function section...
  • Page 39 Video section...
  • Page 40 Micon section...
  • Page 41 Front section...

  • Page 42: Printed Circuit Boards

    Printed circuit boards Main board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Forward side...
  • Page 43 Main board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Reverse side...
  • Page 44 Amp board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Forward side Reverse side 2-10...
  • Page 45 Trans board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) 2-11...
  • Page 46 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB422SCH)

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