Dell E228WFP Service Manual page 44

22" LCD Color Monitor
White screen
White screen
Measure Q603 base
is low level?
OK
Check Q603, Q602 is
broken or CN501 solder?
OK
Replace PANEL
NG
NG
Check Correspondent
component.
X301 oscillate
waveform is normal
NG
OK
Check reset circuit of
U401 is normal
NG
OK
Replace U401
44
Dell E228WFP
Replace X301
Check Correspondent
component.