Acer AL2017 Panduan Servis - Halaman 28

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Halaman Cetak

1. Black Screen

Acer

7. 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 if short

Change

R818,

D804,

Change R808, R

809, R810, R 811,

R815,

END

Service Manual

Change R822,

R823, R824

Change

IC803