2. Check the cables, wires, and connectors for short cir-
cuits and open circuits. Visually check them for
damage. If any problems are found, replace the FRU.
3. Remove or disconnect all of the following devices:
Non-IBM devices
Printer, external mouse & keyboard, and other
external devices
Battery pack
Hard disk drive
Diskette drive/CD-ROM drive
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.
Charger board
Audio & battery function connection board
LCD assembly
System board
ThinkPad i Series 1400/1500
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