Table Of Contents - Acer AL1702 Service Manual

1) Circuit Description
1. Power Board Operation Therory -------------------------------------------------------------------------------------------- 3
2. Inverter -------------------------------------------------------------------------------------------------------------------------- 4
3. Interface ------------------------------------------------------------------------------------------------------------------------- 5
3.1 Top --------------------------------------------------------------------------------------------------------------------------- 5
3.2 Power ------------------------------------------------------------------------------------------------------------------------ 5
3.3 VGA & DDC interface ----------------------------------------------------------------------------------------------------- 5
3.4 Scaler MST8111A --------------------------------------------------------------------------------------------------------- 5
3.5 Panel interface -------------------------------------------------------------------------------------------------------------- 5
3.6 Audio ------------------------------------------------------------------------------------------------------------------------ 7
4. Others --------------------------------------------------------------------------------------------------------------------------- 7
4.1 Detection of POWER switch status ------------------------------------------------------------------------------------ 7
4.2 Display mode identification ---------------------------------------------------------------------------------------------- 7
4.3 Power ON sequence ------------------------------------------------------------------------------------------------------ 8
4.4 Power OFF sequence ----------------------------------------------------------------------------------------------------- 8
4.5List of I/O Pin Assignments of the I307 -------------------------------------------------------------------------------- 9
2) Trouble Shooting
1. No display of screen (Screen is black, color of LED is amber) -------------------------------------------------------- 11
2. Nothing displays on screen (Screen is black, color of LED is green) ------------------------------------------------ 12
3. Checking the back light unit ----------------------------------------------------------------------------------------------- 15
4. Abnormal screen------------------------------------------------------------------------------------------------------------- 16
AL1702
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