17" LCD Color Monitor
Dell E178FPC
53
No Backlight
Check CN902 Pin 3, 4=12V
NG
OK
Check adapter and F902
Check ON/OFF signal
Check Interface board or main board
NG
OK
Check IC801 PIN2=5V
NG
OK
Change on/off circuit
Check IC801 PIN13 have triangle wave
NG
OK
Change IC801, C810
Check IC801 PIN1/PIN15 PWM wave
NG
OK
Check Q805/Q806
,
IC801
Check the output of PT801, PT802
Check connecter & lamp
OK
NG
Change PT801, PT802, and
feedback circuit
Summary of Contents for E178FPC
Page 41: ...17 LCD Color Monitor Dell E178FPC 41 8 PCB Layout 8 1 Main Board ...
Page 42: ...17 LCD Color Monitor Dell E178FPC 42 ...
Page 43: ...17 LCD Color Monitor Dell E178FPC 43 ...
Page 44: ...17 LCD Color Monitor Dell E178FPC 44 8 2 Power Board ...
Page 45: ...17 LCD Color Monitor Dell E178FPC 45 ...
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Page 47: ...17 LCD Color Monitor Dell E178FPC 47 8 3 Key Board ...
Page 60: ...17 LCD Color Monitor Dell E178FPC 60 12 Exploded View ...