Troubleshooting Guide - LG Flatron E1942S Service Manual

NO POWER
(POWER INDICATOR OFF)
1
IC102 PIN3(5V)
2
IS IC103 PIN25(3.3V)
1 3
PIN27(1.2V)
CHECK IC103 PIN 42,43
1 4
CHECK IC103
Waveforms
1
IC102 PIN3 (5V)
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Only for training and service purposes

TROUBLESHOOTING GUIDE

CHECK
YES
YES
PULSE
YES
2
IC103 PIN27 (1.2V)
1. NO POWER
NO
NO
NO
3
IC103 PIN 25 (3.3V)
1.2V
- 13 -
CHECK ADAPTER(19V)
CHECK IC102 PIN3 (5V)
CHECK CRYSTAL(X100)
4
IC103 PIN42,43
LGE Internal Use Only