Dell E176FPc
43
Panel Power Circuit
Inverter Control Relative Circuit
Measured the inverter connector CN402
Pin2 on/off control=3.3V (on)
Pin4 PWM signal control dim 0V-5V
Replace Inverter board to new-one
And check the screen is normal?
OK
Check the BKlt-On relative circuit, R705; in
normal operation, when LED=green, R705
BKlt-On should=3.3V, If BKlt-On no-response
when the power switch turn on-off, Replace
U401
Check NO SCREEN APPEAR block
NG
NG
NG, still no screen
Check C101 should have response from
0V to 5V when we switch the power
switch from off to on
Check the PPWR panel power relative circuit,
Q704, Q706; in normal operation, When LED
=green, V-R725 should =5V,If PPWR
no-response when the power switch turn on and
turn off,
OK
NG
Check CN101, if it is not soldered well
Change CN101
Change panel
NG
OK
Summary of Contents for E176FPc
Page 16: ...Dell E176FPc 16 4 4 2 Optical Characteristics For LM170E01 TLB3 TLB4 panel ...
Page 17: ...Dell E176FPc 17 Optical Characteristics For CLAA170EA07 panel ...
Page 18: ...18 5 Block Diagram 5 1 Monitor Exploded View ...
Page 22: ...Dell E176FPc 22 5 3 2 Inverter Power Board ...
Page 35: ......
Page 36: ...Dell E176FPc 36 8 PCB Layout 8 1 Main Board ...
Page 37: ...Dell E176FPc 37 ...
Page 38: ...Dell E176FPc 38 8 2 Inverter Power Board ...
Page 39: ...Dell E176FPc 39 ...
Page 40: ...Dell E176FPc 40 8 3 Key Board ...
Page 52: ...Dell E176FPc 52 b Click the Select Chip button and choose the type you re going to program ...
Page 54: ...Dell E176FPc 54 d Select the communication Setting Port Name e Click the ConNect button ...
Page 71: ...Dell E176FPc 71 ...