Maintainability; Equipments And Tools Requirement; Trouble Shooting - AOC 203Vwa Service Manual

20" LCD Color Monitor

8. Maintainability

8.1 Equipments And Tools Requirement

1. Voltmeter.
2. Oscilloscope.
3. Pattern Generator.
4. DDC Tool with an IBM Compatible Computer.
5. Alignment Tool.
6. LCD Color Analyzer.
7. Service Manual.
8. User Manual.

8.2 Trouble Shooting

8.2.1 Main Board
No power
Please reinsert and make sure
the AC of 100-240 is normal
No power
Press power key and look
if the picture is normal
NG
OK
Measure U301 PIN2=3.3V
U304 PIN2=1.8V
OK
X201 oscillate waveforms
are normal
OK
Replace U203
NG
Reinsert or check the
Adapter/Inverter section
NG
check CN301 or replace
U301,U304
NG
Replace X201
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AOC 203Vwa