Power Circuit - LG LX-E330A Manual

POWER CIRCUIT

Check the Fuse .
YES
Check the DC output
of C923(+).
YES
Check the DC 12V
Output of IC901.
YES
Check the DC 6.2V
output of IC902.
YES
Check the DC 12V
Output of IC903.
YES
Check the 5.6V of Q604 "C".
(CD FUNCTION)
YES
END
NO
Replace the Fuse .
NO
CHECK THE AC VOLTAGE
OF CN901 pin5, 6.
YES
Replace the D925, D926,
D927, D928.
NO
Check the DC VOLTAGE of
D939(+).
YES
Replace the IC902.
Check DC VOLTAGE OF
NO
D930(+).
YES
Replace the IC902
NO
Check the "High" of
PN601 pin18.
YES
Replace the IC301.
NO
Check the "LOW" of Q605"B".
YES
Replace the Q604.
- 2-8 -
NO
Replace the Transformer.
NO
Replace the D939.
NO
Replace the D930.
NO
Check the "H" of IC301
PIN3.
NO
Check the "Low" of IC301
pin24.