Acer AL502 서비스 매뉴얼 - 페이지 12

{카테고리_이름} Acer AL502에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Acer AL502 27 페이지. 15-inch
Acer AL502에 대해서도 마찬가지입니다: 사용자 설명서 (16 페이지), 사용자 설명서 (16 페이지)

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Check the 3.3 V power are supplied on I308 pin 2.

Is a dot clock being outputted under the

condition that a LCD module is connected to

P303 pin 44?

Check the H-sync pulse of negative polarity is

output on P303 pin 38 at TTL level.

Check the V-sync of negative polarity are

output on P303 pin 40.

Trou bl e Sh ooti ng

Check if the voltage on I308 pin3 that

is high level DC at 5V.

Failure point

I308 Failure

1) Printed wire broke between P301 and I308

1) I300 failure

2) Printed wire broke between I302 and P303 pin 44.

1) I300 failure

2) Printed wire broke between I300 and P303 pin 38.

1) I300 failure

2) Printed wire broke between I300 and P303 pin 40.

A L 502

Failure point

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