LG MCV903 Series Service Manual

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

LG MCV903 Series Specifications

General

Brand	LG
Model	MCV903 Series
Category	Stereo System
Language	English