Acer AL702 서비스 매뉴얼 - 페이지 14
{카테고리_이름} Acer AL702에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Acer AL702 27 페이지. 17 inch
Acer AL702에 대해서도 마찬가지입니다: 사용자 설명서 (16 페이지), 사용자 설명서 (16 페이지)
페이지 인쇄
3. Checking the back light unit
OK
Check the INV_EN signal of the rectangle input I307 pin 5 at TTL high level
OK
OK
1) Inverter cable disconnection.
2) Inverter of LCD module failure.
Trou bl e Sh ooti ng
Is +15V supplied to P803
pin 3, 4 to inverter PWB?
Failure point
NG
Inverter cable disconnection.
Is a "H" level being output in the TTL level from I300 pin 143
NG
Or, is INV_EN signal of the rectangle being output?
Check the PWM signal of the input from I303 pin 7 is a BRI signal
NG
Failure point
NG
Failure point
Printed wire broke between
I300 pin 143 and I307 pin 5
Failure point
1) Printed wire broke between
I303 pin 17 and I307 pin 3
2) I307 failure.
A L C502
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