Sharp DV-550U, Руководство по обслуживанию

Страница: 27 / 84

DV-550U
11-5
Check pin 148 of IC601 for data
cannot be constant high.
Check IC501.
ATSV
No
No
Check for MPEG DATA at IC601
pins 149, 151-154,156-158.
Is Vcc on pin 37.
IC504 pin 20.
No
Is chip enable pin 26 low.
Check on replace IC401.
No
Does opening screen come up.
Yes
Yes
Yes
Change IC501.
Yes
Check pin 95 reset must
be low.
Yes
Check pins 53-56, 59-68
and 71-78 for data.
Yes
Replace IC402.
No
Check pins 79-82 and
85-88 for data.
Yes
Check for open condition
to IC601.
Yes
NO DVD VIDEO3 AND AUDIO BUT CD AUDIO OK
Chenge IC601.
No
Yes
Check pin 48 of IC402 for
RF signal.
No
Replace IC303.
No
Check multiple Vcc
supply pins.
Yes
Check pin 114 of IC601 for data.
Replace IC707.
Replace IC602.
No
No
Bad
Check IC602
Replace IC601
Check pin 5 of IC601 for data.
Yes
Check IC801 and IC6001
Yes Good
GOOD DVD AUDIO AND NO CD AUDIO