检查5V电源电压、复位电压、键盘矩阵电路都正常,测量(34)(35)脚电压和正常值相同,但是考虑到石英晶体损坏的特殊表现,决定试换一下Z701,试换之后故障即被排除。 |
|小黑屋|最新贴|维修网
( 粤ICP备09047344号 )
GMT+8, 2025-5-12 12:52 , Processed in 0.436358 second(s), 23 queries .
Powered by Discuz! X3.4
Copyright © 2001-2021, Tencent Cloud.