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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
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Содержание NV-VP23EC
Страница 56: ...12 ABBREVIATIONS 56 PDF created with pdfFactory Pro trial version www pdffactory com ...
Страница 65: ...20 3 CASING PARTS SECTION 65 PDF created with pdfFactory Pro trial version www pdffactory com ...
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Страница 86: ...K1013 CHIP RESISTOR D0YBR0000002 1 86 PDF created with pdfFactory Pro trial version www pdffactory com ...
Страница 89: ...P8003 CONNECTOR 19POL K1KB19AA0032 1 89 PDF created with pdfFactory Pro trial version www pdffactory com ...
Страница 91: ...QR4903 TRANSISTOR B1GBCFGA0002 1 91 PDF created with pdfFactory Pro trial version www pdffactory com ...
Страница 101: ...W520 CHIP RESISTOR D0YDR0000006 1 101 PDF created with pdfFactory Pro trial version www pdffactory com ...
Страница 126: ...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 127: ...NV VP23EG EC EP NV VP28EG EC NV VP33EG EC EB EBL EP VCR LUMINANCE CHROMINANCE 2 2 BLOCK DIAGRAM ...