Daewoo DV-K892NZ-QB/M, Service Manual

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7
TROUBLESHOOTING GUIDES
Is the output of pin Is the output of pin Is the output of pin Is the output of pin
YES
D.
Check the Video,
Audio output signal of
pin , of
TMI BLOCK (RF101)
Check the TMI
BLOCK.
Check IC601
Check the
Video IC.
Check the video signal
pin of IC601
Is the output of pin
normal?
YES
NO
Check the video output
signal pin of IC301
YES
YES
NO
NO
YES
E.
Is 5V supplied
to pin of Ic601?
NO
YES
Is 5V applied
to pin of Ic601?
YES
Check X601
Is 4V applied to the collector
Is 5V applied to
of Q711,Q712,Q713,Q714?
pin of Ic601?
Check D813.
YES
YES
Check pin ~ of
IC601 and LD701.
YES
NO
Check IC602
NO
Check IC601
NO
NO
Check L806
Check R636, C616
When change the
channel broadcast
signal is not received.
LED ARRAY
does not operate.
Check the
IC601.
NO
YES
Check the Video
output Buffer Q101
29
71
17
20
72
52
37
34
4
and of IC601
29 33