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JVC TH-M65 Service Manual

Dvd digital cinema system
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Download this manual See also: Instruction Manual, Instructions
SERVICE MANUAL
DVD DIGITAL CINEMA SYSTEM
12
2003
MB112
SP-PWM65
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
TH-M65
XV-THM65
SP-THM65C

TABLE OF CONTENTS

US ---------------------- Singapore
UW ---------- Brazil,Mexico,Peru
UJ --------------------- U.S.Military
UG - Turkey,South Africa,Egypt
SP-THM65F SP-THM65F SP-THM65F SP-THM65F
Area suffix
No.MB112
2003/12

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Summary of Contents for JVC TH-M65

  • Page 1: Table Of Contents

    SERVICE MANUAL DVD DIGITAL CINEMA SYSTEM MB112 2003 TH-M65 Area suffix US ---------------------- Singapore UW ---------- Brazil,Mexico,Peru UJ --------------------- U.S.Military UG - Turkey,South Africa,Egypt XV-THM65 SP-PWM65 SP-THM65C SP-THM65F SP-THM65F SP-THM65F SP-THM65F TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Center unit (XV-THM65) Audio Audio input sensitivity/Impedance (at 1 kHz), Total Harmonic Distortion 0.02 % NOTE : This value is measured at System cord CONNECTOR for reference. Analog input AUDIO IN (VCR) 290 mV/47 KΩ 4.3 mV/600 Ω Digital input* DIGITAL IN (DBS) -21 dBm to -15 dBm (OPTICAL)

  • 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 Preventing static electricity 1.5.1 Grounding to prevent damage by 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. 1.5.2 About the earth processing for the destruction prevention by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
  • Page 5 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is 1.CLASS 1 LASER PRODUCT able to function. 2.DANGER : Invisible laser radiation when open and 6.CAUTION : Use of controls, adjustments or inter lock failed or defeated. Avoid direct exposure to performance of procedures other than those specified beam.

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB112)

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the metal cover (See Figs.1 to 4) (1) From the right and left sides of the main body, remove the four screws A attaching the metal cover. (See Figs.1 and Metal cover (2) From the back side of the main body, remove the three screws B attaching the metal cover.
  • Page 8 3.1.2 Removing the front panel assembly (See Figs.5 and 6) • Prior to performing the following procedures, remove the metal cover. Earth wire Card wire (1) From the top side of the main body, disconnect the parallel Card wire CN407 wires from the connectors (CN408,CN409) on the main Main board CN409...
  • Page 9 3.1.3 Removing the DVD changer mechanism assembly (See Fig.7) • Prior to performing the following procedures, remove the metal cover and front panel assembly. DVD changer mechanism assembly Main board (1) From the top side of the main body, disconnect the card wires from the connectors (CN405,CN415) on the main Boss d board.
  • Page 10 3.1.5 Removing the audio & digital input board (See Figs.9 and 10) • Prior to performing the following procedures, remove the metal cover. Main board (1) From the top side of the main body, disconnect the card CN402 wire from the connector CN401 on the audio &...
  • Page 11 3.1.8 Removing the main board (See Figs.11 to 13) • Prior to performing the following procedures, remove the metal cover. Main board CN407 Parallel wire (1) From the top side of the main body, disconnect the card Card wires wires from the connectors (CN405, CN407, CN410, Parallel wire Card wire CN415...
  • Page 12 3.1.9 Removing the connect board (See Fig.14) • Prior to performing the following procedures, remove the metal cover and front panel assembly. Phone jack board (1) From the inside of the front panel assembly, disconnect the CN561 Connect board card wire from the connector CN561 on the connect board.
  • Page 13 3.1.13 Removing the illumination board (See Figs.18 and 19) (1) Open the door assembly of the front panel assembly and remove the three screws AA attaching the door cover to Front panel assembly the door assembly. (See Fig.18.) (2) Disconnect the card wire from the connector CN551 on the illumination board.
  • Page 14 DVD changer mechanism assembly section 3.2.1 Removing the tray assemblies Open det lever (See Figs.1 to 5) (1) Remove the two screws A from the top cover and release the two joints a on the both sides of the DVD changer mechanism assembly.
  • Page 15 3.2.2 Removing the DVD servo board Short circuit points d (See Figs.6 and 7) • Prior to performing the following procedures, remove the tray assemblies. DVD pickup (1) From the topside of the DVD changer mechanism assem- bly, solder the short-circuit points d on the DVD pick up. (See Fig.6.) Caution: Solder the short-circuit points d on the DVD pickup be-...
  • Page 16 3.2.4 Removing the motor board (See Figs.9 and 10) (1) From the top side of the DVD chnager mechanism assem- bly, remove the two belts from the motor pulleys. (See Fig.9.) Belt Belt Caution: Take care not to attach grease on the belt. (2) Remove the four screws E attaching the motors to the chassis assembly.
  • Page 17 3.2.6 Removing the DVD traverse mechanism assembly DVD changer mechanism assembly (See Figs.6 and 11) DVD servo board • Prior to performing the following procedures, remove the tray assemblies. (1) From the topside of the DVD changer mechanism assem- bly, solder the short-circuit points d on the DVD pick up. (See Fig.6.) Caution: Solder the short-circuit points d on the DVD pickup be-...
  • Page 18 3.2.7 Removing the DVD pickup DVD traverse mechanism assembly (See Figs.12 to 14) Connector • Prior to performing the following procedures, remove the tray Flexible wire assemblies and DVD traverse mechanism assembly. (1) From topside of the DVD traverse mechanism assembly, disconnect the flexible wire from the connector on the DVD pickup.
  • Page 19 3.2.9 Removing the spindle motor board Card wire Motor base (See Figs.15 and 16) • Prior to performing the following procedures, remove the tray Spindle motor board assemblies and DVD traverse mechanism assembly. (1) From the topside of the DVD traverse mechanism assem- bly, remove the four screws L attaching the DVD traverse mechanism assembly to the DVD traverse mechanism base.
  • Page 20 3.2.11 Removing the side (L) assembly and tray switch board Side (L) assembly (See Figs.19 to 21) • Prior to performing the following procedures, remove the tray assemblies. (1) From the topside of the DVD changer mechanism assem- bly, remove the two screws S attaching the side (L) assem- bly.
  • Page 21 3.2.12 Removing the side (R) assembly Elevator spring (See Fig.22 to 26) • Prior to performing the following procedures, remove the tray assemblies and DVD servo board. • When removing the DVD servo board, it is not necessary to re- Elevator cam move the DVD servo board from the bracket.
  • Page 22 3.2.13 Removing the lifter assembly Hook (See Figs.27 to 31) • Prior to performing the following procedures, remove the tray assembies, DVD servo board, side (L) assembly and side (R) assembly. • When removing the DVD servo board, it is not necessary to re- move the DVD servo board from the bracket.
  • Page 23 3.2.14 Removing the rack holder assembly and sensor assembly Rack holder assembly (See Figs.32 to 38) • Prior to performing the following procedures, remove the tray Gear 1 assemblies, side (L) assembly, side (R) assembly and lifter as- sembly. Reference: If the slide gear of the DVD changer mechanism assembly places at joint ac of the rack holder assembly, turn the gear 1 counterclockwise to move the slide gear in the direction of the...
  • Page 24 Rack holder assembly Sensor board SV resister Sensor bracket Sensor slider Fig.37 Fig.34 Sensor assembly Sensor assembly Sensor slider Slide gear Sensor spring Slide lever Fig.35 Sensor spring Fig.38 Sensor slider Sensor spring Fig.36 1-24 (No.MB112)
  • Page 25 3.2.15 Taking out the disc in the play mode Tray assembly Disc (See Fig.39 to 42) Reference: Refer to "Removing the tray assemblies". (1) From the topside of the DVD mechanism assembly, re- move the top cover. (2) Unlock the tray assemblies and draw out the tray assem- blies toward the front.
  • Page 26 Speaker section 3.3.1 Removing the amplifier assembly (See Figs.1 and 2) (1) From the rear side of the speaker main body, remove four screws A attaching the heat sink cover. (See Fig.1.) (2) Remove the nine screws B attaching amplifier assembly. (See Fig.2.) (3) Move the amplifier assembly backward and disconnect the wire from connector...
  • Page 27 3.3.2 Removing the rear panel (See Fig.3) • Prior to performing the following procedures, remove the amplifier assembly. (1) Remove the four screws C, twelve screws D and screw E attaching the rear panel. Rear panel (2) Take out the rear panel from the amplifier assembly. Fig.3 3.3.3 Removing the SP terminal board (See Figs.4 and 5)
  • Page 28 3.3.4 Removing the mother board assembly (See Fig.6) • Prior to performing the following procedures, remove the amplifier assembly, rear panel and SP terminal board. Mother board (1) From the top side of the amplifier assembly, disconnect the card wires from the connectors CN151 on the mother board.
  • Page 29 3.3.6 Removing the power amplifier board (A) (See Figs.8 and 9) • Prior to performing the following procedures, remove the amplifier assembly, rear panel, SP terminal board, mother P.TR holder (A) board assembly and mother board. (1) Remove the three screws J attaching the heat sink to the power amplifier board (A).
  • Page 30 3.3.8 Removing the power transformer (See Fig.11) • Prior to performing the following procedures, remove the amplifier assembly, rear panel, SP terminal board and mother board assembly. (1) Remove the tie band, and remove the four screws L attaching the power transformer. (2) Take out the power transformer from the amplifier assembly.
  • Page 31 3.3.10 Removing the speaker (See Figs.14 and 15) (1) From right side of the speaker main body, remove the eight screws M attaching the speaker. (See Fig.14) Speaker (2) Take out the speaker from the speaker main body. (See Fig.15.) (3) Disconnect the wires from the terminal of the speaker.
  • Page 32 Satellite speaker section • Before disassembling the main body, lay down it first. 3.4.1 Removing the cabinet assembly (See Figs.1 and 2) (1) From the bottom side of the main body, remove the four screws A attaching the stand assembly. (See Fig.1.) Hooks a Hooks a CAUTION:...
  • Page 33 3.4.2 Removing the Speakers (See Fig.3) • Remove the net assembly from the cabinet assembly. (See Fig2.) Cabinet assembly (1) Remove the eight screws D attaching the two speakers. (2) Take out the two speakers from the cabinet assembly. (3) From the back side of the speakers, disconnect the speaker wires from the speaker terminals.
  • Page 34 Center speaker section 3.5.1 Removing the Center Speakers (See Fig.1) (1) From the front side of the cabinet assembly, remove the six hooks a attaching the net assembly. Cabinet assembly CAUTION: When removing the net assembly, be careful not to Speaker wires damage the speakers and the cabinet assembly.

  • Page 35: Adjustment

    SECTION 4 ADJUSTMENT Test mode setting method (1) Unplug the power plug. (2) Insert power plug into outlet while pressing both "STOP" key and "OPEN/CLOSE" key (for DISC 1) of the main body. (3) "Area code" is indicated at the upper left of display. (4) To release test mode, press "STANDBY/ON"...
  • Page 36 All-initialization method Please perform all-initialization according to the following procedures in the following case: • Just after you exchange the pick-up. • Just after you exchange the spindle motor. • Just after you exchange the traverse mechanism base. NOTE: Please perform all-initialization when you exchange the parts above and also when you remove the parts above. •...
  • Page 37 Display of current value of laser (1) Set the main body at test mode. (2) Press "CHOICE" key of the remote controller three times. Then, FL display is displayed "CHECK". (3) The laser current value can be switched between the value of CD and that of DVD by pressing the following key of the remote controller.
  • Page 38 4.7.1 Tool for adjustment *Stud: One set (four studs), Part number: JIGXVS40 4.7.2 Preparation for adjustment (1) Set the disassembly procedure, and remove the changer mechanism assembly from the main body. (2) Disconnect the card wires from the connectors CN501 CN502 on the DVD servo board.
  • Page 39 Confirmation of region (1) Unplug the power plug. (2) Insert power plug into outlet while pressing both "PAUSE" key and "FORWARD SKIP" key of the main body. About 3 seconds later, FL display indicates "REGION ". (3) Push the "OPEN/CLOSE" key (for DISC 1) and confirm the tray of DISC 1 is ejected. (4) To release test mode, press "STANDBY/ON"...

  • Page 40: Troubleshooting

    SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. 1-40 (No.MB112)
  • Page 41 (No.MB112)1-41...
  • Page 42 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB112) Printed in Japan...