Philips 190S7 Service Manual page 44

19" LCD Color Monitor
(3). White screen
Measure Q406 base
is high level?
Check Q406, Q405 is broken
or CN406 solder?
Check Correspondent
component.
(4). Keypad Board
White screen
OK
NG
OK
Replace Panel
NG
X401 oscillate
waveform is normal
OK
Check reset circuit of
U401 is normal
NG
OK
Replace U401
44
NG
Replace X401
Check Correspondent
component.
190S7