Acer AL1917W C Servicehandleiding - Pagina 22

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1. Chapter 4- Disassembly & Assembly
2. Exploded Diagram
3. Input Signal
4. Attachment 2- Schematic

Acer

2. Unstable Power

Unstable power

Check sampling

Circuit

Check the R pin

voltage of IC803

about 2.5V

Check pin2 of

IC802 voltage

is 3V

Check pin1 of

IC802 voltage

below 1V

Check R822,

R823, R824

Check the C pin

voltage of IC803

if 3V

Check R819, R820

Check R818, D804, C807

Change R808, R 809,

R810, R 811, R815,

R814,Q803

END

Service Manual

Change R822,

R823, R824

if short

Change

R818, D804,

C807

Change

IC803