IBM型号Thinkpad Z61T Z61M Z60T Z60M T43 T43P T42 T42P T41 T41P T40 T40P T31 T30 T23 T22 T21 T20 R60t R60e R61 R60 X61 X60 X606 X41t X41 X40 X32 X31 X30 X24 X23 X22 X21 X20 T61P T60 R52 R51e R50P R50e R50 R40E R40 R32 R31 R30 G40 A31P A31 A20M A20P A21M A22e A22M A22P A30 A31P X60 X60T Thinkpad240 Thinkpad315ED 键盘连键 串键 失灵 打不出字 键盘进水 该怎么办?