Acer H15AAX, Руководство по обслуживанию

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Index
H15AAX (AL502)
Page 18
1. No display of screen (Screen is black, color of LED is amber) ------------------------------------------------------------ 1
2. Nothing displays on screen (Screen is black, color of LED is green) ---------------------------------------------------- 2
3. Checking the back light unit -------------------------------------------------------------------------------------------------------- 5
4. Abnormal screen ----------------------------------------------------------------------------------------------------------------------- 6
5. No OSD display ------------------------------------------------------------------------------------------------------------------------ 7
6. Abnormal plug and play operation ------------------------------------------------------------------------------------------------ 8
6.1 Abnormal DDC2 ------------------------------------------------------------------------------------------------------------------ 8
7. Checking the interface circuit of sync signal ----------------------------------------------------------------------------------- 9
7.1 Checking the control circuit of horizontal sync pulse ------------------------------------------------------------------- 9
7.2 Checking the control circuit of vertical sync pulse ---------------------------------------------------------------------- 9
8. Checking the resolution change IC movement ------------------------------------------------------------------------------- 10
9. No power on --------------------------------------------------------------------------------------------------------------------------- 11
9.1 No power o n (I) ------------------------------------------------------------------------------------------------------------------ 11
9.2 No power on (II) ---------------------------------------------------------------------------------------------------------------- 12
10. Checking the DC/DC converter circuit ----------------------------------------------------------------------------------------- 13
11. Checking the operation of CPU -------------------------------------------------------------------------------------------------- 14
12. Checking the audio circuit --------------------------------------------------------------------------------------------------------- 15
13. Checking inverter board circuit -------------------------------------------------------------------------------------------------- 16
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