Maintainability; Equipments And Tools Requirement; Trouble Shooting - Dell E1709Wc Service Manual

17" LCD Color Monitor

9. Maintainability

9.1 Equipments and Tools Requirement

1. Voltage meter
2. Oscilloscope
3. Pattern Generator
4. LCD Color Analyzer
5. Service Manual
6. User Manual

9.2 Trouble shooting

9.2.1 Main Board
No power
Measure U404 PIN2= 3.3V
C423(+)= 1.8V
NG
OK
X401 oscillating waveform is
normal
NG
OK
Reset signal is normal
NG
OK
Replace U401
Measure CN404
PIN3、4= 5.6V
NG
OK
Check U404, Q409, Q410
Check X401, C411, C412
Check R401, R402
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Dell E1709Wc
Check power section