Dell E176FPc
42
9.2 Trouble shooting
9.2.1 Main Board
No display
Note:
1. If replace “
Main-Board
”, Please re-do “DDC-content” programmed & “White-Balance”.
2. If replace “
Power Board
” only, Please re-do “ White-Balance”.
Re-do White balance adjust
OK
Measured CN701 pin5/6 = 12 V?
Measured CN701 pin 9/10= 5V?
Check main board Power; is there DC level
output? Check U701 pin 2= 3.3V? U702
pin 2= 1.8V? Is there any shortage or cold
solder?
OK
Disconnected the Signal cable (Loose the
Signal cable), Is the screen show Block
WRGB color bars?
Connected the Signal cable again,
check LED status.
Green
Replace U401
Scalar IC
NG
Connected the Signal
cable again Check LED
status.
Check Power switch is in Power-on
status, and check if Power switch had
been stuck?
Orange
OK, Keyboard no stuck
Orange
Green
Check the Wire-Harness from CN101
Measured RGB (R434, R435,
R436,) H/V Input at U401 pin
89,90, Was there have signal?
Check
Correspondent
component
short/open
(Protection Diode)
NG
OK, Wire tight
enough
Check
Panel-Power Circuit Block
OK, Panel Power OK
Check U401 Data-output
Block
Replace
Inverter board
and Check
Inverter
control relative circuit
Measured Crystal X401
OK
Replace
U401 (GM2621)
OK
OK, U401 data OK
NG
OK
Содержание E176FPc
Страница 16: ...Dell E176FPc 16 4 4 2 Optical Characteristics For LM170E01 TLB3 TLB4 panel ...
Страница 17: ...Dell E176FPc 17 Optical Characteristics For CLAA170EA07 panel ...
Страница 18: ...18 5 Block Diagram 5 1 Monitor Exploded View ...
Страница 19: ...19 5 2 Software Flow Chart 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 ...
Страница 22: ...Dell E176FPc 22 5 3 2 Inverter Power Board ...
Страница 35: ......
Страница 36: ...Dell E176FPc 36 8 PCB Layout 8 1 Main Board ...
Страница 37: ...Dell E176FPc 37 ...
Страница 38: ...Dell E176FPc 38 8 2 Inverter Power Board ...
Страница 39: ...Dell E176FPc 39 ...
Страница 40: ...Dell E176FPc 40 8 3 Key Board ...
Страница 52: ...Dell E176FPc 52 b Click the Select Chip button and choose the type you re going to program ...
Страница 53: ...Dell E176FPc 53 c Click the Select Bank0 button and selecting a file which a binary Format required ...
Страница 54: ...Dell E176FPc 54 d Select the communication Setting Port Name e Click the ConNect button ...
Страница 71: ...Dell E176FPc 71 ...