Dell SP2009W Service Manual - Page 51

Measure U701 PIN2=3V

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20" LCD Color Monitor No picture (LED orange) No picture Dell SP2009Wc The button if under control NG X402 oscillate NG waveform is normal Replace X402 OK Measure U701 PIN2=3V U702 PIN2=2V OK Check reset circuit of NG Check Correspondent U402 is normal component OK NG OK Replace U701, U702 Replace U402 X401 oscillate waveform is normal NG OK Check HS/VS from CNR10e1pilsacneorUm4a0l1 NG OK Replace U401 Replace X401 Check Correspondent component 51

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20" LCD Color Monitor
Dell SP2009Wc
51
No picture (LED orange)
No picture
The button if
under control
X402 oscillate
waveform is normal
Replace U402
Replace X402
Measure U701 PIN2=3V
U702 PIN2=2V
Check Correspondent
component
X401 oscillate
waveform is normal
Replace
U701, U702
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U402 is normal
Check HS/VS from
CN101is normal
Replace X401
Check Correspondent
component
NG
NG
OK
Replace U401