HP VS19E Service Manual page 36

19" LCD Color Monitor
2. W/LED No Backlight
Check L1912 =12V
Check ON/OFF signal
Check IC801 PIN5=5V+0.25V
Check IC801 PIN 18 triangular wave is
normal
Check IC701 PIN11,12,19,20
End no output debug
OK
OK
OK
Check IC801 PIN3=5V
OK
OK
OK
NG
Check adapter
NG
Check Interface board
NG
Check Q806,Q807, Q812, R840,ZD803 circuit
NG
Check Q806, Q807,Q812,R840,ZD803 circuit
NG
Check R817,R919,C812,C848,IC801
NG
Check R817,R819,C812,C848,IC801
36
HP VS19E