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JVC UX-G70J Service Manual

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Download this manual See also: Instruction Manual
SERVICE MANUAL
MICRO COMPONENT SYSTEM
6
MB505
2006
UX-G70J,UX-G70C,UX-G70B,
UX-G70E,UX-G70EN,
UX-G70EV,UX-G70EE
SUPER VIDEO
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
SP-UXG70
CA-UXG70

TABLE OF CONTENTS

COPYRIGHT © 2006 Victor Company of Japan, Limited
SP-UXG70
No.MB505
2006/6

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Summary of Contents for JVC UX-G70J

  • Page 1: Table Of Contents

    SERVICE MANUAL MICRO COMPONENT SYSTEM MB505 2006 UX-G70J,UX-G70C,UX-G70B, UX-G70E,UX-G70EN, UX-G70EV,UX-G70EE SP-UXG70 CA-UXG70 SP-UXG70 SUPER VIDEO Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Ω Amplifier section Output Power Northern america 120 W per channel, min. RMS, driven into 6 at 1kHz with no more than 10% total harmonic distortion. (for northern america) Ω Europe 160 W (80 W+80 W) at 6 (10% THD) for europe Ω...

  • Page 3: Precaution

    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 4 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 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. 1.6.1 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 Importance administering point on the safety Full Fuse Replacement Marking Marquage Pour Le Remplacement Complet De Fusible Graphic symbol mark Le symbole graphique (Ce symbole signifie (This symbol means fast blow type fuse.) fusible de type a fusion rapide.) should be read as follows ; doit etre interprete comme suit ;...
  • Page 7 1.10 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 8: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-8 (No.MB505)

  • Page 9: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the side panel (Fig.1, 2) (1) Remove the six screws A attaching the side panel. (See Fig.1) (2) Remove the four screws B attaching the side panel. (See Fig.2) 3.1.2 Removing the top cover (Fig.1, 3) (1) Remove the one screw C attaching the top cover.
  • Page 10 3.1.3 Removing the front panel (Fig.4 to 6) (1) Disconnect the card wire from the connector CN359 CN360 on the regulator board. (See the Fig.4) CN360 CN405 CN713 CN359 CN706 (2) Disconnect the card wire from the connector CN760 on the main board.
  • Page 11 3.1.5 Removing the video board (Fig.7, 8) (1) Disconnect the card wire from the connector CN401 CN402 on the video board. (See Fig.7) CN401 (2) Remove the three screws H attaching the video board. (See Fig.8) 3.1.6 Removing the tuner pack (Fig.8, 9) (1) Disconnect the card wire from the connector CN712...
  • Page 12 3.1.8 Removing the rear panel (Fig.10, 11) (1) Remove the eight screws L attaching the rear panel. (See Fig.10) (2) Remove the rear panel from the hook c. (See Fig.11) Fig.10 hook c Fig.11 1-12 (No.MB505)
  • Page 13 3.1.9 Removing the transformer board (Fig.12) (1) Disconnect the connector wire from the connector CN903 on the transformer board. (2) Remove the one screw M attaching the transformer board. (3) Disconnect the connector CN901 connecting the regulator board and then removing the transformer board with power cord.
  • Page 14 3.1.12 Removing the regulator board (Fig.15) (1) Disconnect the connector wire from the connector CN361 on the regulator board. (2) Remove the four screws P attaching the regulator board. (3) Disconnect the card wire from the connector CN356. CN361 CN356 Fig.15 3.1.13 Removing the power transformer (Fig.16)
  • Page 15 3.1.14 Removing the DVD changer mechanism assembly (Fig.17 to 19) (1) Remove the four screws R attaching the main chassis. (See Fig.17) (2) Remove the two screws S and two screws T attaching the DVD changer mechanism assembly. (See Fig.18, 19) Fig.17 Fig.18 Fig.19...
  • Page 16 3.1.15 Removing the USB board (Fig.20) (1) Remove the three screws U attaching the USB board. Fig.20 3.1.16 Removing the FL board (Fig.21) (1) Remove the four screws V attaching the FL board. (2) Disconnect the card wire from the connector CN100 on the FL board.
  • Page 17 DVD changer mechanism assembly section Remove the DVD changer mechanism assembly from the main body. (See "Removing the DVD changer mechanism assembly".) 3.2.1 Removing the tray assemblies (See Figs.1 to 5) (1) From the top side of the main body, remove the two screws Top cover A from the top cover and release the two joints a on the both sides of the DVD changer mechanism assembly.
  • Page 18 Open det. lever Fig.3 Side(R) assembly Tray assemblies Fig.4 Tray assembly Fig.5 1-18 (No.MB505)
  • Page 19 3.2.2 Removing the DVD servo board (See Figs.6 to 8) Caution: Solder the short land sections d on the DVD pickup before dis- connecting the card wire extending from the DVD pickup. If you do not follow this instruction, the DVD pickup may be dam- DVD pickup aged.
  • Page 20 3.2.4 Removing the motor board (See Figs.9 and 10) (1) From the top side of the DVD changer mechanism assem- bly, remove the two belts from the motor pulleys. (See Fig.9.) Note: Take care not to attach grease on the belt. Belt Belt (2) Remove the two screws D attaching the motors to the load-...
  • Page 21 3.2.6 Removing the DVD traverse mechanism assembly (See Fig.11) • Remove the tray assemblies and DVD servo board. DVD changer mechanism assembly (1) From the bottom side of the DVD changer mechanism as- sembly, remove the three screws F attaching the DVD traverse mechanism assembly.
  • Page 22 3.2.7 Removing the DVD pickup (See Figs.12 to 14) • Remove the tray assemblies, DVD servo board and DVD DVD traverse mechanism assembly traverse mechanism assembly. Feed bracket (1) From the top side of the DVD traverse mechanism assem- Thrust spring bly, release the lock of the connector on the DVD pickup Connector and disconnect the card wire in the direction of the arrow.
  • Page 23 DVD pickup Rack arm Guide shaft Rack arm spring Fig.14 Connector DVD pickup Screw shaft gear Fig.15 (No.MB505)1-23...
  • Page 24 3.2.9 Removing the spindle motor board (See Figs.16 and 17) • Remove the tray assemblies, DVD servo board and DVD DVD traverse mechanism assembly traverse mechanism assembly. (1) From the top side of the DVD traverse mechanism assem- Spindle motor board bly, remove the wires from the soldered sections r on the spindle motor board.
  • Page 25 3.2.10 Removing the feed motor (See Figs.18 and 19) • Remove the tray assemblies and DVD traverse mechanism Feed bracket assembly. (1) From the top side of the DVD traverse mechanism assem- Thrust spring bly, remove the screw K attaching the feed bracket and re- move the feed bracket from the sections t.
  • Page 26 3.2.11 Removing the side (L) and tray switch board (See Figs.20 to 22) • Remove the tray assemblies. SIde(L) (1) From the topside of the DVD changer mechanism assem- bly, remove the two screws M attaching the side (L). (See Fig.20.) (2) From the left side of the DVD changer mechanism assem- bly, disconnect the connector...
  • Page 27 3.2.12 Removing the side (R) assembly (See Fig.23 to 27) • Remove the tray assemblies and DVD servo board. Elevator spring (1) From the inside of the side (R) assembly, release the two tabs aa of the gear cover and remove the gear cover out- ward.
  • Page 28 3.2.13 Removing the lifter assembly (See Figs.28 to 32) • Remove the tray assemblies, DVD servo board, side (L) and Hook side (R) assembly. (1) (1) From the top side of the DVD changer mechanism as- sembly, turn the gear 1 clockwise to move the lifter assem- bly upward.
  • Page 29 3.2.14 Removing the sensor board and SV resistor (See Fig.33) • Remove the tray assemblies, side (L), side (R) assembly and Sensor board lifter assembly. (1) Remove the solders from the soldered sections aj on the sensor board and remove the wires. (2) Remove the two screws Q and take out the sensor board with the SV resistor.
  • Page 30 3.2.15 Taking out the disc in the play mode (See Fig.34 to 37) Reference: Tray assembly Refer to "3.3.1 Removing the tray assemblies". (1) From the top side of the DVD changer mechanism assem- bly, remove the top cover. (2) Unlock the tray assemblies and draw out the tray assem- blies toward the front.
  • Page 31 Tray stopper Main tray Sub tray Fig.36 Tray stopper Fig.37 (No.MB505)1-31...

  • Page 32: Adjustment

    SECTION 4 ADJUSTMENT ATTENTION IN SERVICE OF DVD SECTION (1) When pickup, Flash ROM ,DVD module board were changed, initialize EEPROM by all means. (2) When full initialization was excuted, excute learning with a DVD test disc by all means. Test disc : VT-501, VT-502 Learning method : It is adjusted automatically by normal playback of a DVD disc.
  • Page 33 Item Operation Managemant DVD initialize >>| [key] during DVD test mode DVD module initialized. FL 8 Segments will display 'INIT' after initialize. " T xxy v0 " <- " T xxy vw " Display will return to DVD Test Mode Area display. ( "...
  • Page 34 3. EEPROM INITIALIZATION (1) NORMAL INITIALIZE a. During DVD TEST MODE, Press >>| key on remote control to start NORMAL EEPROM INITIALIZATION. b. Sys-con will send the following command: c. Mecha will feedback the following information after finish INITIALIZATION: Status: Byte 0 = 0x00 (NORMAL), Byte 7 = 0x09, Byte 4 = initialization state d.
  • Page 35 FL Display: (2 seconds) Status: 00(NORMAL) XX XX cc cc jj jj (Static) cccc: Byte 0 = 0x00, Byte 7 = 0x00, Byte 3,4 ¨DISPLAY jjjj: Byte 0 = 0x00, Byte 7 = 0x00, Byte 5,6 ¨DISPLAY Press '6' key on REMOTE CONTROL to enter DVD x 2 JITTER MEASUREMENT MODE FL Display: (2 seconds) Status: 00(NORMAL) XX XX cc cc jj jj...
  • Page 36 FL Display: (2 seconds) Status: 00(NORMAL) XX XX cc cc jj jj cccc: Byte 0 = 0x00, Byte 7 = 0x00, Byte 3,4 ¨DISPLAY (Static) jjjj: Byte 0 = 0x00, Byte 7 = 0x00, Byte 5,6 ¨DISPLAY Press STOP key on REMOTE CONTROL to stop JITTER measurement. FL display remains.

  • Page 37: Troubleshooting

    SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB505)1-37...
  • Page 38 Victor Company of Japan, Limited Audio/Video Systems Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB505) Printed in Japan...

This manual is also suitable for:

Ux-g70cUx-g70enUx-g70evUx-g70eeUx-g70bUx-g70e