Daewoo DV- K504N-SJ, Technical Manual

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90
TROUBLESHOOTING GUIDES (Continued)
NO
Check IC301
C.
Is the signal applied to
pin
G
of IC301?
Is pin
F
of IC301 0V?
NO
Check IC601
Is 5V applied to
Pin
f
of IC301?
Is the voltage above 5.8V
at pin
@
of T201
YES
NO
Check power circuit
NO
YES
NO
Check Q203
YES
YES
Is there output at
pin
d
of IC201?
Does T201 oscillate?
YES
YES
Check A/C HEAD and connector
pin
$
,
%
of P201
Check Q203
Collect: 5.8V,
Base: 0.7~3.0V
NO
Check T201
NO
Check PIF&INPUT
SELECT circuit
YES
Is 0.7~3.0V to
collector of Q205
YES
Check Q205, IC301
NO
No sound in the playback mode after
recording. Check the following procedure
in RECORD mode.