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REPLACEMENT PROCEDURE
8.1. SELF-DIAGNOSIS
The optical pickup self-diagnosis function and tilt adjustment check function have been
included in this unit. When repairing, use the following procedure for effective Self-diagnosis
and tilt adjustment. Be sure to use the self-diagnosis function before replacing the optical
pickup when "NO DISC" is displayed. As a guideline, you should replace the optical pickup
when the value of the laser drive current is more than 55.
Note:
Press the power button to turn on the power, and check the value within three minutes before
the unit warms up. (Otherwise, the result will be incorrect.)
8.2. CAUTIONS TO BE USED BEFORE REPLACING THE OPTICAL
PICKUP UNIT AND SPINDLE MOTOR ASSEMBLY
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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 ...
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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 ...