Related Manuals for JVC XV-1000BK
Summary of Contents for JVC XV-1000BK
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Page 43: Precautions For Service
Precautions for Service Initialize the DVD player If microprocessor (IC401, IC405 or IC601) or servo board (ENS-001) is replaced, initialize the DVD player in the following manner: 1. Make sure that no disk is on the tray. 2. While pressing the ON SCREEN and DVD MENU keys simultaneously on the DVD player, turn on the primary power. -
Page 44: Disassembly Procedures
Disassembly Procedures 1. Removing the top cover 1) Remove the two screws 'A' on the rear and four screws 'B' on both sides which fix the top panel. 2) Remove the top cover. Figure 1 2. Removing the front panel 1) Remove the top cover. - Page 45 3. Removing the rear panel 1) Remove the top cover. 2) Remove the ten screws 'E' which fix the rear panel. 3) Remove the rear panel. Figure 4 4. Removing the loading base 1) Remove the top cover. 2) Remove the flexible wire which connects the loading base with the main board. Note: The laser pickup used in the DVD player can easily be destroyed by static electricity charged on the human body.
- Page 46 5. Removing the clamper plate and the clamper 1) Remove the top cover. 2) Remove the four screws 'H', and then the clamper from the loading base. 3) After removing the screws which fix the clamper, remove the three claws on the bottom to disassemble the clamper.
- Page 47 7. Removing the traverse unit 1) Remove the loading tray. 2) Remove the four screws 'I' and fixtures which fix the traverse unit. 3) The traverse unit is connected with the rotary cam. Carefully remove the traverse unit by lifting the rear side (the side with the rotation support flat spring).
- Page 48 Assembling the Loading Base 9. Assembling parts of the loading mechanism 1) According to Figure 10, assembly gears and belt in order. 10. Assembling the traverse unit 1) Take the flexible wire from the traverse unit out of the loading base. 2) With the top of the traverse unit inserted in the groove of the rotary cam, tighten the four bolts 'I'.
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Page 49: Adjustment Procedures
Adjustment Procedures (1) Items to be adjusted For this device, the following two items need to be adjusted: Item Adjusted part Content Reference VR-201 of ENS- Adjust the default for the RF signal equalizer to the current source 001 board center value to absorb deviation with ICs. - Page 50 This key is disabled during the initialization of EEPROM. When this key command is accepted to open the tray, the initialization of EEPROM has already ended. With the test disc supplied from JVC (DEMO1004) on the tray, press the OPEN/CLOSE key to let the tray retreat. (Do not push the tray in.) Press the ON SCREEN key.
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Page 51: Troubleshooting
Troubleshooting 1.Power-on processing Connect to outlet. P.STAND-BY F001 Replace Return to A Does indicating lamp (500mA) fuse F001. and recheck. the lamp lights up? is blown. goes out when Micro- POWER switch of computer remote control Volume. box is turned Check the Press POWER switch. - Page 52 2. Power Supply Volume With all the wiring removed, check unit power board (ENS-002-4). (1) Remove all flat wires and wire assemblies which are connected to CN902 to CN906. (2) Short-circuit CN905‡G (POWER ON) and ‡F (B5V). (Set each regulator to ON.) (3) Short-circuit CN903‡D (A.GND) and ‡G (D.GND).
- Page 53 4. Microcomputer Volume Processing of Each Microcomputer IC601 System microcomputer (sub-microcomputer) After powering on, this microcomputer is continuously activated to control keys and remote control signals. According to key operations or remote control signals, it controls (turns on/off) the power for LSIs including IC401 (main microcomputer) and the audio/video output circuit.
- Page 54 6. Servo Volume The self-diagnosis function can be used for failures on the servo system. How to start the self-diagnosis function and to display results Start this device in TEST mode. Remove the disc in advance. While pressing both the "ON SCREEN" key and "DVD MENU" key, connect to the outlet. When the "POWER"...
- Page 55 [ Error codes displayed on FL when double-layer DVD is inserted ] For double-layer DVD, L0 is checked after checking L1. Error Check point for each error Content of error code in [ Servo Volume 1 ] Servo RAM writing NG Servo RAM writing NG Servo RAM writing NG Servo RAM writing NG...
- Page 56 [ Error codes displayed on FL when CD or video-CD is inserted ] In TEST mode, a video-CD is treated as a CD. Error Check point for each error Content of error code in [ Servo Volume 1 ] Servo RAM writing NG Servo RAM writing NG Servo RAM writing NG Servo RAM writing NG...
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Page 57: Audio Volume
7. Audio Volume Power to Power Supply supplied correctly Volume to each IC? IC701 and IC702 are supplied power from IC705. Check I/O voltage of IC705. Is sound signal output from J701 (pin jack)? Approx . 5V Check Q851, Is sound Is sound Voltage of Check Q913 and... - Page 58 Signal Flow of Each DISC Media 1. DVD IC101 IC201 IC351 IC453 IC451 IC501 IC701 IC702 DISC PRE AMP READ CH. DEM/ECC DESCRAMBLER V-DEC A-DEC K2 I/F 2. CD IC101 IC201 IC354 IC501 DISC PRE AMP READ CH. CD-DSP A-DEC 3.
- Page 59 8. Video Volume Power +5V power for video section is to Power Supply supplied correctly Volume supplied from IC654. to each IC? Check I/O voltage of IC654. Is video Is video Check the insertion of signal output from signal output from L680, L683, IC651, J651 composite J652 S terminal?
- Page 60 [ Servo Volume 1 ] Troubleshooting when error code is displayed in TEST mode Single-layer DVD Automatic adjustment (Basically the same with double-layer DVD) Remove the top cover. IC251 (4CH driver) R261 Tray opened? IC401 While pressing both the "ON (main microcomputer) SCREEN"...
- Page 61 (2) Disc type judgment error (no disc, no RFENV) Laser is defective. Preamplifier is defective (IC101). LPF circuit is defective. Q101, R125 to R129. Pattern is defective. Lines for CN101"15" and "17". Lines for IC351"41" to IC101"6" (LDON). DEM/ECC is defective (IC351). Servo IC is defective (IC301).
- Page 62 Focus balance coarse adjustment NG (This error rarely occurs.) Mechanical unit is defective. Although focusing is executed normally, blooming occurs if vibrated during coarse adjustment. Periphery of driver is defective. Due to cold soldered or short-circuited resistor, capacitor, etc., of the gain setting section, gain becomes too large, and blooming occurs when vibrated.
- Page 63 (11) Focus loop gain adjustment NG This error occurs only when the gain cannot be adjusted in the specified range. Therefore, this error rarely occurs. Out-of-range gain due to using a low-sensitivity pickup or abnormality on the circuit tends to result in other errors.
- Page 64 For CDs Automatic adjustment Spindle start error See DVD Disc type judgment error See DVD Traverse movement NG See DVD Focus ON NG See DVD Focus balance coarse adjustment NG See DVD Phase difference cancel adjustment NG See DVD Tracking balance adjustment NG See DVD Tracking ON NG See DVD...
- Page 65 [ Servo Volume 2 ] Troubleshooting when TEST mode check was OK. During normal playback operation (TEST mode is OK) (1) Neither picture nor sound is output Cannot search Can the feed system be driven? Check the waveform of control voltage W003. Line between IC301 and W003 or TP253.
- Page 66 (2) Picture is distorted or abnormal sound occurs at intervals of several seconds. Does JITOUT Some system other change periodically? than servo may be (2V or more in peak defective. value, except during kick) Feed system is defective (drive gain is defective: too large). Check the waveform according to a) in (1).
- Page 67 CDDuring normal playback operation (TEST mode is OK) (1) Is TOC reading normal? Displays total time Because TEST mode is OK, CLV control must be available. for CD-DA. Does pulse frequently occur on IC354"18" during Shifts to double-speed TOC reading? mode for V-CD.
- Page 68 (4) Others (unusual events experienced to date) Problem occurs with double-layer discs although no problem occurs with single-layer DVD. (Error occurs, or search becomes unstable and takes longer.) Crosstalk might occur from tracking to focus system. When FE was observed during search (skip, etc.), it was found that a wave resembling TE with an amplitude of 200mVp-p was riding on FE.
- Page 69 oscilloscope...
- Page 70 FE Zoom...
- Page 75 Because of storage oscilloscope overwrite mode, RF related waveform may be different from those observed by an analog oscilloscope.
- Page 76 TE Zoom...
- Page 78 33.8688MHz 27MHz 33.8688MHz 18.432MHz 3.5V REG. CN101 RFAS3 IC502 DFL TOP CD-DSP PRE AMP READ-CH MC33269D-X LDON IC354 A-DEC IC101 IC201 CN602 LRCK MN66261JV 3 MODE IC501 LASER DOUT0 AN8824FBP AN8623FBQ-V A1~A4,B1+B2, AUDIO DATA OUT SELECT MN67730 PICK-UP RDCK B3+B4,PD (*1) MUTE CONTROL IEC OUT...
- Page 79 ENS-002-5 PLL BLOCK D701~D703 L701 DOUT0 CN701 LRCK AUDIO DATA INPUT INTERFACE IC702 J701 M1,M3 IC701 MUTE DAC MODE MA~MD MN35503 JCE8001 IC703,IC704 Q705~Q707 ANALOG AUDIO OUT MUTE MUTE1 CONTROL f.RESPONCE SW Q701,Q703,Q704 CN702 CN703 P.MUTE POWER SUPPLY +10V FOR AUDIO -10V CN851 +5V REG.
- Page 80 CN906 TO ENS-002-1 FILAMENT ON/OFF -30V REG. CONT. Q901,D911 +10V REG. Q910~Q912 CN902 Q902,D910 TO ENS-002-6 D901 +10V ON/OFF CONTROL S1VB20F Q903,Q904,Q908,Q909 AC IN POWER TRANSFORME -10V REG. CN903 Q905,D909 T901 TO ENS-002-5 QQT0146-001 MUTING DRIVER D902 Q917 U6SBA20 ON/OFF MOTOR +9V REG.