LG LX-M230A, Руководство пользователя

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- 2-14 -
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 Q501
Replace the D925, D926,
D927, D928
Replace the IC902
Check DC VOLTAGE OF
D930(+)
Check the “LOW” of
IC501 pin8
Check the “High” of Q605“B”
Replace the Q604
Replace the IC902
Replace the Transformer
Replace the D939
Replace the D930
Replace the IC501
Check the “High” of
IC501 pin4
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO