Acer AL1702 서비스 매뉴얼 - 페이지 22
{카테고리_이름} Acer AL1702에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Acer AL1702 38 페이지. 17-inch lcd monitor
Acer AL1702에 대해서도 마찬가지입니다: 사용자 설명서 (17 페이지), 사용자 설명서 (20 페이지), 서비스 매뉴얼 (49 페이지)
페이지 인쇄
8. Checking the resolution change IC movement
Check +3.3V supply on I305 pin11, 21, 84, 94, 104, 114, 126, 55,
Check +2.5V supply on I305 pin18, 87, 97, 117.
Check X301 14.318MHz clock input to I305 pin33 and 34 at TTL
Check I305 pin32 HWRESET signal is low level at normal
Check I305 pin69, 70, 71 3-wire bus signal is (Same of the IIC
Failure Point
I305 failure.
Page 20
65, 35, 45, 51, 53.
NG
OK
NG
OK
level.
NG
OK
operation.
NG
OK
signal).
NG
OK
Proceed " Checking the DC/DC converter circuit" section.
Proceed " Checking the DC/DC converter circuit" section.
Failure Point
1) Printed wire broke between X301 and I305 pin33, 34.
2) C371, C375 short or open.
3) X301 failure.
Failure Point
1) Printed wire broke between I305 pin32 and I307 pin23.
2) R410, R380 open.
3) I307 failure.
Failure Point
1) Printed wire broke between I305 pin69, 70, 71 and I307 pin20, 21,
22.
2) I307 failure.
AL1702