Maintainability; Equipments And Tools Requirement; Trouble Shooting - Iiyama PLB2409HDS-B1 Service Manual

23.6"W LCD Color Monitor

8. Maintainability

8.1 Equipments and Tools Requirement

1. Multi-meter.
2. Oscilloscope.
3. Pattern Generator.
4. DDC Tool with and 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
No power
Press power key and look
if the picture is normal
NG
Please reinsert and make sure
the AC of 100V-240V is normal
OK
Measure U702 PIN2=3.3V
U704 PIN2=1.2V
OK
Measure X401 oscillate
waveforms are normal
OK
Replace U401
Reinsert or check the
NG
Adapter/Inverter
section
NG
Check CN701 or replace
U702, U704
NG
Replace X401
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Iiyama PLB2409HDS