Dell E228WFP Service Manual page 43

22" LCD Color Monitor
No picture (LED orange)
No picture
Measure U602 PIN2=1.8V
U601 PIN2=3.3V
NG
OK
X301 oscillate
waveform is normal
NG
OK
Whether the reset
of the Scalar IC is
useful?
NG
OK
Check HS/VS from
Replace U401
CN202 is normal
NG
OK
Replace U401
Replace
U601, U602
Replace X301
Check U302, C333,
C329, ZD301
Check Correspondent
component
43
Dell E228WFP