Dell E207WFP - Page 40

20" LCD Color Monitor Dell E207WFP
40
No Backlight
End no output debug
NG
NG
Check if IC801 PIN18 triangular
wave is normal
OK
OK
Check adapter
Check Interface board
Check Q801, Q802,
Q807, ZD803 circuit
OK
NG
NG
NG
OK
Check CN902 Pin3,4 =13V
Check ON/OFF signal
Check IC801 PIN5=5V±0.25V
Check IC801 PIN3=5V
Check IC801
PIN11, 12, 19, 20
Check Q801, Q802,
Q807, ZD803 circuit
Check R819, R820, C826,
IC801 circuit
NG
Check R819, R820, C826,
IC801 ,Q803~Q806circuit