IBM 6648 Personal Computer User Manual


 
Power supply removal .......144
A20 system board layout (Type 6269) . . . 146
System board locations .......146
A20 System board jumper settings . . . 146
A20 Clear CMOS/Flash Boot Block
Recovery...........146
A20 Processor Speed Settings ....147
A20 Diskette Write Access .....147
A40/A40P system board layout
(Types 6058/6059/6578/6579)......148
System board locations .......148
A40/A40P System board jumper settings 148
A40/A40P Clear CMOS/Flash Boot
BlockRecovery ........149
A40/A40P Processor Speed Settings 149
A40/A40P Diskette Write Access. . . 149
Symptom-to-FRUindex........150
Beepsymptoms.........150
No-beepsymptoms........152
POST error codes .........153
Miscellaneous error messages .....167
Undetermined problems .......171
Model tables - Country/Region/Language 172
Parts - Types 6058/6059/6269/6578/6579 173
Parts listing ...........174
Keyboards - PCNext Lite Pearl White 180
ComputerPowerCords......181
RecoveryCDs.........182
Display and Monitor Information . . 182
Special tools .........183
100 Hardware Maintenance Manual: IBM NetVista Computer Types 6058, 6059, 6269, 6568, 6569, 6578, 6579, 6648,
6649