Acer
Acer –LCD-A231H
3
.
Backlight can’t be turned on
No raster?
LED Green?
Yes
Yes
Yes
Backlight can’t be
turned on.
No
Check power
supply
Is there high-level voltage on
pin6 of IC501?
No
Is Ok R505?
Check I/F board
Yes
R505 open
No
Yes
Is there instantaneously pulse
wave on pin1, pin16 of IC501
at the moment of restart?
No
Is Ok IC501?
Yes
U501, U502 fail
No
IC501 fail
Yes
Is ok T501?
T501fail
Are connected rightly
CN501, CN502, CN503 and
CN504?
No
Connecting the
output connector
again
No
Check feedback circuit
ISEN1,ISEN2,VSEN,OLP1,OLP2
Yes
END
Is there 5Vdc voltage
on pin2 of IC501?
Yes
Yes
Содержание A231H
Страница 1: ...Acer Acer LCD A231H Service Manual LCD Monitor Acer A231H ...
Страница 12: ...Acer Acer LCD A231H 9 PC 3 3 5V 10 Sync Ground 11 N C 12 DDC SDA 13 H sync 14 V sync 15 DDC SCL ...
Страница 29: ...Acer Acer LCD A231H 02 Flat Panel Specification ...
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Страница 75: ...Acer Acer LCD P236H 4 Black screen ...
Страница 76: ...Acer Acer LCD P236H 5 White Screen ...
Страница 77: ...Acer Acer LCD P236H 6 Bad Screen ...
Страница 80: ...Acer Acer LCD A231H 06 Schematics and Layouts 6 1 IF BD Layout ...
Страница 81: ...Acer Acer LCD A231H 6 2 Power BD Layout ...
Страница 82: ...Acer Acer LCD A231H 6 3 Keypad BD Layout ...
Страница 83: ...Acer Acer LCD A231H 6 4IF BOARD schematics and Power Supply circuit ...
Страница 94: ...Acer Acer LCD A231H S13 Take out interface board and power board S14 Take out LCD panel ...
Страница 102: ...Acer Acer LCD A231H A231H ...
Страница 103: ...Acer Acer LCD A231H 3 2 Cloose the Model in main menu and the password is 1234 A231H ...
Страница 104: ...Acer Acer LCD A231H 3 3 Choose the model A231H_A Update VGA A231H_D Update DVI A231H A231H_D A231H_A ...
Страница 105: ...Acer Acer LCD A231H 3 4 Input S N in the Blank eg ETLA10C109805111D94023 the program can write directly A231H ...
Страница 106: ...Acer Acer LCD A231H 3 5 After the process is ok the program can check that automatically A231H ...
Страница 107: ...Acer Acer LCD A231H 3 6 If write successfully you can see PASS in the right A231H A231H ...