Micom Part Check Ii - LG XC62-A0U Service Manual

3. MICOM PART CHECK II

MICOM part check II
YES
Check if
voltage of P7904_PIN5
is 5.6V.
YES
Check
both end voltage of
D101
YES
Check
Q101_ emitter/collector
5V.
YES
Check if IC103_PIN8 and
IC100_PIN19, 20, 59 are 5V.
YES
X101 : 32.768kHz
X100 : 9.8304MHz
Check the operation.
YES
OK
LGE Internal Use Only
NO
Refer to
SMPS troubleshooting.
NO
Check if output of
D101(RL104) is 5V.
YES
Check D101.
YES
OK
NO
Check Q102_base
0.6V HIGH.
YES
Q102_collector 0.6V LOW.
YES
Check Q102.
YES
OK
NO
Replace D101.
NO
Check if output of IC101
(KIA7042) is over 4.3V.
YES
Check IC101.
YES
OK
NO
Replace Q102.
3-5 Copyright © 2007 LG Electronics. Inc. All right reserved.
NO
Replace IC101.
Only for training and service purposes