Jvc-MC-8200-LU-Service-Manual(1) 电路图 维修手册.pdf

《Jvc-MC-8200-LU-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Jvc-MC-8200-LU-Service-Manual(1) 电路图 维修手册.pdf（71页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL No. HM003 Dec. 2003 COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.Printed in Japan MC-8200LU/MC-8600LUNo. HM003 R VICTOR COMPANY OF JAPAN, LIMITED is a registered Trademark owned by VICTOR COMPANY OF JAPAN, LTD. is a registered Trademark in Japan, the U.S.A., the U.K. and many other cou

2、ntries. R R R 100% recycled paper SPECIFICATIONS MC-8600LUMC-8200LU MC-8200LU/MC-8600LU CD/DVD LIBRARY MC-8200LU 200 4 58kg (Excluding the discs and optional equipment) MC-8600LU 600 12 3.2 A to 1.8 A (max. value), 1.4 A to 0.8 A (6 Drives are loaded) 104kg (Excluding the discs and optional equipmen

3、t) Number of stored discs Number of magazines Operating environment Rated power voltage Rated power frequency Rated current Power consumption Interface Drive slots rack bays Media size Temperature: 5C to 35C (41F to 95F) (Note 1) Humidity: 10% to 80% (no condensation) AC 120 V to 240 V 50 Hz/60 Hz 2

4、.4 A to 1.4 A (max. value), 1.4 A to 0.8 A (6 Drives are loaded) 140 W (Reference value, 6 DVD-RAM drives are loaded) 68-pin external SCSI connector 6 12 cm discs Available drives DVD-RAM/R drive MC-R434UWrite/Read Read DVD-RAM (Ver. 2.1), DVD-R (for General), CD-R, CD-RW DVD-ROM, CD-ROM Compatible

5、discs Weight Item Applicable optionsDrives Magazine Carrier Magazine set: MC-M25U (B) Single-sided / Double-sided compatible disc carrier: MC-CF10U The relevant specifications for the drives can be found in the appropriate instruction manual. Concerning the Availability/Compatibility of the drives t

6、hat are not listed, please contact your dealer or nearest JVC service centre. The production of a particular drive may be discontinued without prior notice. Therefore, a replacement drive may be changed to a different model. JVC does not provide a warranty in the case of software not functioning cor

7、rectly as a result of a drive being replaced or added. RadioFans.CN 收音机爱 好者资料库 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. Howeve

8、r, 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,

9、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 c

10、om- 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

11、 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 Tape3) Spacers5) Barrier 2) PVC tubing4) Insulation

12、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

13、 (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 onl

14、y 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 conn

15、ections 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

16、 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

17、) 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, us

18、e 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 rep

19、laced 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 free Crimped at approx. center of metal sleev

20、e Conductors extended Wire insulation recessed more than 4 mm RadioFans.CN 收音机爱 好者资料库 ?Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions, Afterwards, perform the f

21、ollowing tests and confirm the specified values in order to verify compli- ance with safety standards. 1.Insulation resistance test Confirm the specified insulation resistance or greater between power cord plug prongs and externally exposed parts of the set (RF terminals, antenna terminals, video an

22、d audio input and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. 2.Dielectric strength test Confirm specified dielectric strength or greater between power cord plug prongs and exposed accessible parts of the set (RF terminals, antenna terminals, video and audio input a

23、nd output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. 3.Clearance distance When replacing primary circuit components, confirm specified clearance distance (d), (d) be- tween soldered terminals, and between terminals and surrounding metallic parts. See table 1 below. 4.Leak

24、age current test Confirm specified or lower leakage current between earth ground/power cord plug prongs and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). Measuring Method : (Power ON) Insert

25、load Z between earth ground/power cord plug prongs and externally exposed accessi- ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and following table 2. 5.Grounding (Class 1 model only) Confirm specified or lower grounding impedance between earth pin in AC in

26、let and externally exposed accessible parts (Video in, Video out, Audio in, Audio out or Fixing screw etc.). Measuring Method: Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications. d d Chassis Power cord, primary wire Region U

27、SA one on the chassis PCB and the other on the SCSI PCB. When replacing a battery, be sure to use one having the specified parts number. For the parts number, refer to “5. PCB Assy Parts List”. Chassis PCB : BT300 SCSI PCB: BT1 Note: Perform fuse replacements correctly. Never use a fuse other than t

28、hat specified by the manufacturer (same model number or its equivalent). Note: If the battery is not replaced correctly, it could cause an explosion. Never use a battery other than one specified by the manufacturer (same model number or its equivalent). After replacement, dispose of the expired batt

29、ery according to the instructions of the manufacturer. 2-1 NORMAL display MODE switch SELECT switch SELECT switch SELECT switch MODE switch MENU display MENU display Display blinks Hold down for more than 5 sec. Wait for a while 1 . NORMAL DISPLAY 2 . ERROR DISPLAY 5 . DOOR OPEN MODE 6 . ID No. SET

30、MODE PUSH SELECT SW TO OPEN THE DOOR EXECUTING DOOR OPEN PROCESS YOU MAY OPEN THE DOOR PUSH SELECT SW TO OPEN THE DOOR Cursor When the power is not turned on or when electrical or mechanical trouble occurs, the unit will not enter the door open mode with the above operations, and inserting the key c

31、annot open the door. In this case, proceed in the following manner to open the door. 1. Turn the power of the main unit to OFF. 2. Insert a pin having a diameter of approx. 2 mm (or extended spike or clip, etc.) into the emergency hole to release the key lock. With this, you can turn the key to perf

32、orm the door opening operation. Door open/close key cylinder (lock key) Unlocked (release) Locked (lock) LR 2.1.2Opening/Closing the Door and Panel Removal Opening the Door When the power of the main unit is OFF, first turn it to ON. 1. Press the MODE switch on the control panel to display the MENU

33、display. 2. Use the SELECT switch to move the cursor to “5. DOOR OPEN MODE” and select with the MODE switch. 3. When the SELECT switch is pressed, the LCD display starts blinking. Hold down the switch for more than 5 seconds, the unit enters the door open mode. 4. When the door open mode operation c

34、ompletes, the mes- sage “YOU MAY OPEN THE DOOR” is displayed accompa- nied by a click sound. In this condition, when the MODE switch is pressed without opening the door, the “NORMAL display” (normal operation status) resumes. 5. Turn the power of the main unit to OFF. 6. Insert the key and turn it c

35、ounterclockwise (by 90) to re- lease the lock. Now the doors are opened toward you. 7. When closing the door, first close the L door then close the R door. While holding the door gently, turn the key clockwise (by 90) to lock it, then pull out the key. 2-2 2-3 Removing the Panel Turn the power OFF i

36、n standby mode, insert a pin into the emer- gency hole on the panel, and open the door using the key. Then remove the screw enabling the panel to be removed by sliding it to the right. 2.1.3Removing the Magazine 1. Open the door. (Refer to 2.1.2.) Removing the Panel When trouble occurs with the carr

37、ier stopped at the lower sec- tion, remove the panel while release the lock by pressing down the lever shown in the diagram. 2. Pull the release lever which locks the magazine toward you. The magazine is slightly protruded toward the front. Panel Key Cylinder Emergency Hole Pin (2 mm dia.) Panel mou

38、nting screw Release Lever SAFETY SCREW for TRANSPORTATION Slide Release lock Panel 3. Grasp the grip to remove the magazine toward you.6. Remove the drive from the rear. 2.1.4Removing the Drive 1. Open the door. (Refer to 2.1.2.) 2. Remove the rear panel (DH). (Refer to 2.1.8.) 3. Disconnect the two

39、 connector cables from the drive. 4. Disconnect all the SCSI cables from all the drives and the SCSI PCB. (When removing the drive in the uppermost slot among the currently mounted drives, disconnect the cable connected to the uppermost drive only.) 5. Remove the screw 1 located on the side of the d

40、rive (door panel side). 2.1.5Removing the Center Panel 1. Open the door. (Refer to 2.1.2.) 2. Remove the panel. (Refer to 2.1.2.) 3. Remove the six screws 2 to remove the center panel. 4. When loading the magazine, insert the magazine gently until it clicks. Note: Center panel must be removed when r

41、emoving the car- rier mechanism. Grip SCSI cableConnector cable 1 Photo shows situation when removing the Drive 2 Photo shows situation when removing the Drive 2 2 6 screws 2-4 2-5 2.1.6 Removing the Carrier Mechanism 1. Open the door. (Refer to 2.1.2.) 2. Remove the center panel. (Refer to 2.1.5.)

42、3. Remove the #3 and #4 magazines. (Refer to 2.1.3.) For the MC-8600U, remove the #3 and #4 magazines in the same way. 4. Remove the three screws 3. 5. While holding the lower section of the carrier mechanism, rotate the shaft of the U/D motor by hand to shift the carrier mechanism to the #3/#4 maga

43、zine position. 6. Remove the carrier mechanism upward. 7. Turn the carrier mechanism upside down, and remove the screws 4 retaining the flat cable mounting bracket. 8. Release the flat cable connector lock and disconnect the flat cable to remove the carrier mechanism. Note: Pay attention not to dama

44、ge the lock of the flat cable con- nector . 3 4 Bracket 2.1.7Removing the Side Panel 1. Remove the eight screws 6 to remove the side panel. When removing the side panel, unscrew while holding the side panel with your hands. (To prevent the panel from drop- ping.) 1. Remove the 16 screws 6 to remove

45、the side panels. When removing the side panel, unscrew while holding the side panel by hand. Pay special attention to the upper side panel. (in order to prevent the panel from being dropped.) Note: When removing the U/D motor and magazine sensor PCB, remove the upper side panel. 2.1.8Removing the Re

46、ar Panel 1. Remove the three rear panels (T), (DH) and (B) by removing the four screws 7 for each. 1. In the same way as MC-8200U, remove the two rear panels (DH) and (B). 2. Remove the eight screws 7 to remove the upper rear panel (T6). Note: When removing the power supply unit, chassis PCB or SCSI

47、 PCB, you dont have to remove the rear panels. 6 6 6 7 7 (T) (DH) 4 screws 4 screws 7 (B) 4 screws 7 (T6) 8 screws 2-6 2-7 2.1.9 Removing the Exterior Side Panel 1. Remove the rear panel. (Refer to 2.1.8.) 2. Remove the side panel. (Refer to 2.1.7.) 3. Remove the six screws 8 (ten screws for MC-8600

48、U), to remove the exterior side panel. 2.1.11 Removing the Chassis PCB 1. Remove the rear panel (DH). (Refer to 2.1.8.) 2. Remove the side panel. (Refer to 2.1.7.) 3. Remove the chassis PCB and connector cables from the drive at the drive side. (Leave the cables connected to the drive power supply a

49、s they are.) 2.1.10 Removing the Power Supply Unit 1. Remove the side panel. (Refer to 2.1.7.) 2. Disconnect the connector cables connected to the power sup- ply unit. 3. Remove the two screws 9. 4. Slightly loosen the two screws 0, and remove the power supply unit by sliding it upward. 4. Disconnect the connector cables from the chassis PCB. 5. Remove the three screws !. 6. Slide the chassis PCB toward the left and pull it out from the right side. 2.1.12 Removing the SCSI PCB 1. Remove the rear panel (DH). (Refer to 2.1.8.) 2. Disconnect the two con