Troubleshooting Guide - LG Flatron 27EA63V Service Manual

NO POWER
(POWER INDICATOR OFF)
IS ADAPTER
1
VOLTAGE 19V?
IS IC102 PIN 3(5V)?
2
1 3
"IS IC 103 PIN1 (3.3V),
PIN3 (1.2V)?"
Check IC100 PIN 45,46
1 4
CHECK IC100
Waveforms
JK100#1
1
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Only for training and service purposes

TROUBLESHOOTING GUIDE

YES
YES
YES
PULSE
YES
IC102#3
2
1. NO POWER
NO
NO
NO
NO
IC103#1
3
5V
- 1 3 -
CHECK Adapter
CHECK IC102(5V)
CHECK IC 103 PIN1(3.3),PIN
PIN3(1.2V)
CHECK CRYSTAL(X100)
IC100#45,46
4
LGE Internal Use Only