LG LX-E330A, Manual, Page: 12 / 36

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