LG MCV903 Service Manual page 23

2. MICOM PART CHECK II
MICOM PART CHECK II
YES
Check CN710
6PIN 5.6V
YES
Check the
power of both
D102 and D101 1SR35
(Is the power of
IC 100,14.40.55
89 4.8V?
YES
Check IC102
KIA7031 input power.
YES
Check IC102 KIA7031
output power
YES
Check IC100 87F5NC8A
8 PIN power.
YES
OK
LGE Internal Use Only
NO
Refer to SMPS
Troubleshooting.
Check the D101,102
NO
1SR35 output 5V
YES
Check the
related part.
YES
OK
NO
Check the D101
1SR35 output 5V
YES
Check
IC 102 KIA7031
input power (4.8V or input power
(4.8V or higher)
YES
Check IC 102
KIA7031 output
power
YES
OK
3-2
NO
Replace the related parts.
NO
Check & replace the related
NO
Check R1A9 680 Ω
NO
Check the operation status of
R191 10K and R110 4.7K
Replace the related parts.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
part.
NO
YES
OK
YES