IBM ThinkPad R30 Hardware Maintenance Manual page 59

v Printer, external mouse & keyboard, and other
external devices
v Battery pack
v Hard disk drive
v CD-ROM drive/Diskette drive (optional)
v PC Card (PCMCIA)
4. Power on the computer.
5. Determine if the problem has changed.
6. If the problem does not occur again, reconnect the
removed devices one at a time until you find the failing
FRU.
7. If the problem remains, replace the following FRUs one
at a time. Do not replace a non-defective FRU.
v Hard disk drive connection board
v LCD assembly
v System board
ThinkPad R30 and R31
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