DAEWOO ELECTRONICS DV-F562 Series, Руководство по обслуживанию

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3-5. VIDEO CIRCUIT
28
Is video signal input
into pin and of IC151?
12 13
Is E12V supplied to
pin of IC151
16
Is signal output from
pin of IC151?
14
Is signal input into
pin of IC301?
31
Is signal output from
pin of IC301?
28
Check PIF circuit
and A/V jack.
Check ever 12V
Check IC151 and
adjacent circuit.
Check connector and
PCB pattern
Is 5V supplied to pin
and of IC301?
24
29
Check
power circuit
Check IC301
pin EE(L)/PB(H)
Check
IC601 pin
29
Change IC301
Is signal input from
ICS01 pin?
10
Is signal output from
ICS01 pin?
8
Check pattern,
connector and Q312.
Check osd circuit
RF out Line out
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO NO
H
L
A.EE MODE PIcture N.G
NO
YES
4
27
No sound in the playback
mode after in the record mode.
Is the signal applied to
pin of IC201?
16
Is 5V applied to
pin of IC201?
24
Is there output at
pin of IC201?
21
Does T201 oscillate?
Check circuit adjacent
to IC151.
Check IC601.
Check IC201.
Is the voltage above 10V
at pin of T201
Check Q201
collector:above 10V
Base:0V
Check T201
Is record current
3.0mVms?
Is 0V applied to
pin of IC201?
Clean HEAD.
Adjust Record current.
Check IC201.
Check Q202 and T201.
Check Q201.
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
NO
NO
NO
YES
3
B
1