pickup will be damaged by static electricity in the working environment. Proceed servicing
works under the working environment where grounding works is completed.
5.1.1. WORKTABLE GROUNDING
1. Put a conductive material (sheet) or iron sheet on the area where
the optical pickup is placed, and ground the sheet.
5.1.2. HUMAN BODY GROUNDING
1. Use the anti-static wrist strap to discharge the static electricity
form your body.
5.1.3. HANDLING OF OPTICAL PICKUP
1. To keep the good quality of the optical pickup maintenance parts
during transportation and before installation, the both ends of the
laser diode are short-circuited. After replacing the parts with new
ones, remove the short circuit according to the correct procedure.
(See this Technical Guide.)
2. Do not use a tester to check the laser diode for the optical pickup.
Failure to do so will damage the laser diode due to the power
supply in the tester.
6. GENERAL DESCRIPTION
6.1. OPERATING INSTRUCTIONS
6.2. SERVICE CAUTION
6.2.1. REPLACING IC6002/EEPROM
When the EEPROM: IC6002 is replaced, applicable model code, option code and electrical
adjustment data will not be available.
Therefore, enter and/or adjust the necessary data after replacing IC6002 by referring following
7
Содержание NV-VP23-33
Страница 13: ...C Stop unloading just before unloading would be completed D Then the tape becomes slack 13 ...
Страница 18: ...7 3 TOP PANEL 1 Unscrew the Screws 7 4 FRONT PANEL UNIT 1 Unscrew the Screw 2 Remove the Tabs 18 ...
Страница 22: ...7 9 MAIN PCB UNIT 1 Unscrew the Screws 2 Release the Connectors 3 Remove the Main PCB Unit 22 ...
Страница 23: ...7 10 POWER PCB UNIT 1 Unscrew the Screws 2 Release the Connectors 3 Remove the Power PCB Unit 23 ...
Страница 25: ...7 12 2 SERVICE POSITION OF THE POWER SUPPLY PCB 7 12 3 SERVICE POSITION OF THE DECODER PCB AND TERMINAL PCB 25 ...
Страница 39: ...10 3 FRONT HOLDER 1 Remove the Front Holder 10 4 CLAMP PLATE UNIT 39 ...
Страница 56: ...12 ABBREVIATIONS 56 ...
Страница 64: ...20 1 VCR CHASSIS PARTS SECTION 20 2 DVD CHASSIS PARTS SECTION 64 ...
Страница 65: ...20 3 CASING PARTS SECTION 65 ...
Страница 66: ...66 ...
Страница 67: ...20 4 PACKING PARTS SECTION 67 ...
Страница 86: ...LB1218 BEAD CORE J0JHC0000070 1 86 ...
Страница 122: ...5 VID_FROM_YC AV3_V_IN TO SYSCON JK4801 7 6 V_OUT_TO_YC FROM SS SECTION TO IO SECTION PP4801 PS7501 3 3 ...
Страница 123: ...NV VP23EG EC EP NV VP28EG EC NV VP33EG EC EB EBL EP VCR LUMINANCE CHROMINANCE 2 2 BLOCK DIAGRAM ...