Jvc MC 8100 LU Service Manual
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TABLE OF CONTENTS Section Title Page Section Title Page Important Safety Precautions INSTRUCTIONS 1. CIRCUIT BOARD COMPATIBILITY............................. 1-1 2. PRODUCT SPECIFIC SERVICE ITEMS 2.1 REMOVAL OF MAJOR PARTS ............................. 2-1 2.1.1 REPLACEMENT OF FUSES AND BATTERIES ...... 2-1 2.1.2 OPENING/CLOSING THE DOOR AND PANEL REMOVAL ....... 2-2 2.1.3 REMOVING THE MAGAZINE ............................... 2-3 2.1.4 REMOVING THE DRIVE ....................................... 2-4 2.1.5 REMOVING THE SIDE STAY R ............................. 2-4 2.1.6 REMOVING THE CARRIER MECHANISM ........... 2-5 2.1.7 REMOVING THE SIDE PANEL L .......................... 2-6 2.1.8 REMOVING THE SIDE PANEL R .......................... 2-6 2.1.9 REMOVING THE REAR PANEL ............................ 2-6 2.1.10 REMOVING THE POWER SUPPLY UNIT ............. 2-6 2.1.11 REMOVING THE CHASSIS PCB ........................... 2-7 2.1.12 REMOVING THE SCSI PCB .................................. 2-7 2.1.13 REMOVING THE MAIL SLOT ............................... 2-8 2.1.14 REMOVING THE TOP PANEL .............................. 2-8 2.1.15 REMOVING THE U/D MOTOR .............................. 2-9 2.1.16 HOW TO OPERATE WITH THE DOOR OPEN (FOR SERVICING) ... 2-9 2.2 SPECIAL OPERATION MODE ............................ 2-10 2.2.1 RUNNING MODES ............................................. 2-10 2.2.2 ACCESS COUNTER CLEARANCE ...................... 2-12 2.2.3 MANUAL OPERATION ....................................... 2-12 2.2.4 PACKING MODE ................................................ 2-14 2.2.5 TRAY AUTO RETURN MODE ............................. 2-14 2.2.6 MEMORY CLEAR MODE ................................... 2-14 2.2.7 DISC/TRAY CHECK MODE ................................. 2-15 2.2.8 AUTO CHECK MODE ......................................... 2-15 2.2.9 DRIVE DETECTION MODE ................................. 2-15 2.2.10 AUTO DISC/TRAY CHECK ON/OFF SETTING ..... 2-16 2.3 SELF-DIAGNOSTIC DISPLAY .............................. 2-16 2.3.1 DISPLAYING TROUBLE HISTORY ...................... 2-16 2.3.2 DISPLAY WHEN TROUBLE OCCURS ................ 2-17 2.3.3 ERASING THE TROUBLE HISTORY ................... 2-18 2.3.4 ERROR CODE LIST ............................................ 2-18 2.4 MAINTENANCE MODE ...................................... 2-19 2.4.1 OUTLINE ............................................................. 2-19 2.4.2 ELECTRICAL SPECIFICATIONS .......................... 2-19 2.4.3 MAINTENANCE TYPES AND CONDITIONS ....... 2-19 2.4.4 ACTIVATING THE MAINTENANCE MODE ......... 2-19 2.4.5 MAINTENANCE PROGRAM ............................... 2-19 2.5 MAINTENANCE AND PERIODICAL CHECK ....... 2-20 2.6 COUNTERMEASURES AGAINST MECHANICAL TROUBLE (FOR MC-R400U) ...... 2-21 2.7 COUNTERMEASURES AGAINST MECHANICAL TROUBLE (FOR MC-R200U) ...... 2-22 3. DIAGRAMS AND CIRCUIT BOARDS 3.1 CD/DVD LIBRARY BLOCK DIAGRAM .................. 3-1 3.2 CHASSIS BLOCK DIAGRAM ................................ 3-2 3.3 OVERALL WIRING DIAGRAM .............................. 3-3 3.4 CHASSIS SCHEMATIC DIAGRAM ........................ 3-4 3.5 CHASSIS CIRCUIT BOARD .................................. 3-53.6 SCSI SCHEMATIC DIAGRAM ............................... 3-6 3.7 SCSI CIRCUIT BOARD .......................................... 3-7 3.8 CARRIER SCHEMATIC DIAGRAM ....................... 3-8 3.9 CARRIER CIRCUIT BOARD .................................. 3-9 3.10 MAIL SLOT SCHEMATIC DIAGRAM .................. 3-10 3.11 S. MOT SCHEMATIC DIAGRAM ........................ 3-10 3.12 MAIL SLOT CIRCUIT BOARD ............................. 3-11 3.13 S. MOT CIRCUIT BOARD ................................... 3-11 3.14 LVD SCHEMATIC DIAGRAM .............................. 3-12 3.15 LVD CIRCUIT BOARD ......................................... 3-13 3.16 DISPLAY SCHEMATIC DIAGRAM ...................... 3-14 3.17 DISPLAY CIRCUIT BOARD AND OTHER BOARD ....... 3-15 3.18 BLOCK DIAGRAMS OF IC S ............................... 3-16 4. EXPLODED VIEW AND PARTS LIST 4.1 FINAL ASSEMBLY M1......................................... 4-1 4.2 FINAL ASSEMBLY PARTS LIST M1..................... 4-2 4.3 CARRIER MECHANISM ASSEMBLY M2............ 4-5 4.4 CARRIER MECHANISM ASSEMBLY PARTS LIST M2.... 4-6 4.5 MAIL SLOT ASSEMBLY M3................................ 4-7 4.6 MAIL SLOT ASSEMBLY PARTS LIST M3............ 4-8 4.7 MAGAZINE ASSEMBLY M4................................ 4-9 4.8 MAGAZINE ASSEMBLY PARTS LIST M4............ 4-9 4.9 IL BRACKET ASSEMBLY M5............................. 4-10 4.10 IL BRACKET ASSEMBLY PARTS LIST M5......... 4-10 4.11 U/D MECHANISM ASSEMBLY M6.................. 4-11 4.12 U/D MECHANISM ASSEMBLY PARTS LIST M6..... 4-12 5. ELECTRICAL PARTS LIST 5.1 CHASSIS BOARD ASSEMBLY PARTS LIST 01 ........... 5-2 5.2 CONNECTOR BOARD ASSEMBLY PARTS LIST 02 .... 5-5 5.3 RS232C BOARD ASSEMBLY PARTS LIST 03.... 5-5 5.4 S.MOT BOARD ASSEMBLY PARTS LIST 04.......... 5-5 5.5 SCSI BOARD ASSEMBLY PARTS LIST 05......... 5-6 5.6 DISPLAY BOARD ASSEMBLY PARTS LIST 06... 5-7 5.7 MAIL CN BOARD ASSEMBLY PARTS LIST 07... 5-7 5.8 ROT SENSOR BOARD ASSEMBLY PARTS LIST 08 ...5-7 5.9 MG SENSOR BOARD ASSEMBLY PARTS LIST 09 .... 5-7 5.10 CARRIER MEC BOARD ASSEMBLY PARTS LIST 10 ...5-8 5.11 R CATCH BOARD ASSEMBLY PARTS LIST 11 ........... 5-8 5.12 L CATCH BOARD ASSEMBLY PARTS LIST 12 ........... 5-8 5.13 LOADING BOARD ASSEMBLY PARTS LIST 13 .......... 5-9 5.14 TRAY LOCK BOARD ASSEMBLY PARTS LIST 14 ....... 5-9 5.15 LANE2 SEN BOARD ASSEMBLY PARTS LIST 15 ....... 5-9 5.16 L ADD SEN BOARD ASSEMBLY PARTS LIST 16 ....... 5-9 5.17 R ADD SEN BOARD ASSEMBLY PARTS LIST 17 ....... 5-9 5.18 DISK SEN R BOARD ASSEMBLY PARTS LIST 18 ....... 5-9 5.19 DISK SEN T BOARD ASSEMBLY PARTS LIST 19 .... 5-10 5.20 MAIL SLOT BOARD ASSEMBLY PARTS LIST 20 .... 5-10 5.21 SENSOR BOARD ASSEMBLY PARTS LIST 21 ......... 5-10 5.22 POSI IN BOARD ASSEMBLY PARTS LIST 22 .......... 5-10 5.23 LVD BOARD ASSEMBLY PARTS LIST 23 ................. 5-11 6.PACKING 6.1 PACKING ASSEMBLY M7 ............................................ 6-1 6.1.2 PACKING ASSEMBLY PARTS LIST M7 ....................... 6-1
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Important Safety Precautions Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. Fig.1 1. Locations requiring special caution are denoted by labels and inscriptions on the cabinet, chassis and certain parts of the product. When performing service, be sure to read and com- ply with these and other cautionary notices appearing in the operation and service manuals. 2. Parts identified by the symbol and shaded ( ) parts are critical for safety. Replace only with specified part numbers. Note: Parts in this category also include those specified to com- ply with X-ray emission standards for products using cathode ray tubes and those specified for compliance with various regulations regarding spurious radiation emission. 3. Fuse replacement caution notice. Caution for continued protection against fire hazard. Replace only with same type and rated fuse(s) as specified. 4. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads 5. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 3) Spacers 5) Barrier 2) PVC tubing 4) Insulation sheets for transistors 6. When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering. Power cord Fig.2 10. Also check areas surrounding repaired locations. 11. Products using cathode ray tubes (CRTs) In regard to such products, the cathode ray tubes themselves, the high voltage circuits, and related circuits are specified for compliance with recognized codes pertaining to X-ray emission. Consequently, when servicing these products, replace the cath- ode ray tubes and other parts with only the specified parts. Under no circumstances attempt to modify these circuits. Unauthorized modification can increase the high voltage value and cause X-ray emission from the cathode ray tube.12. Crimp type wire connector In such cases as when replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, if replacing the connectors is unavoidable, in or- der to prevent safety hazards, perform carefully and precisely according to the following steps. 1)Connector part number : E03830-001 2)Required tool : Connector crimping tool of the proper type which will not damage insulated parts. 3)Replacement procedure (1) Remove the old connector by cutting the wires at a point close to the connector. Important : Do not reuse a connector (discard it). Fig.7 cut close to connector Fig.3 (2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors. 15 mm Fig.4 (3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. Connector Metal sleeve Fig.5 (4) As shown in Fig.6, use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool. 1 Precautions during Servicing 7.Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.) 8.Check that replaced wires do not contact sharp edged or pointed parts. 9. When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it. 1.25 2.0 5.5 Crimping tool Fig.6 (5) Check the four points noted in Fig.7. Not easily pulled freeCrimped at approx. center of metal sleeve Conductors extended Wire insulation recessed more than 4 mm