Daewoo DV-K784N-JJ, Руководство по обслуживанию

Страница: 94 / 128

93
TROUBLESHOOTING GUIDES (Continued)
Is 9V applied to pin
U
?
of IC901?
Check power circuit.
YES
NO
A.
Is 5V applied to pin
+
of
IC901 and pin
J
of IC301?
Check INPUT JACK
Is signal input pin
{
,
}
of IC901 in line mode?
YES
NO
Is 0V applied to pin
)
of IC901?
YES
NO
YES
NO
Check SYSCON circuit
Change IC901
Is there output at pin
1
,
3
of IC901?
NO
Check OUTPUT JACK
YES
No sound in the E-E mode
AUDIO CIRCUIT (Hi-Fi MODEL)