IBM Series 1400, Series 1500 manual

2.Check the cables, wires, and connectors for cuits and open circuits. Visually check them damage. If any problems are found, replace

3. Remove or disconnect all of the following de

ŸNon-IBM devices

ŸPrinter, external mouse & keyboard, and o external devices

ŸBattery pack

ŸHard disk drive

Ÿ Diskette drive/CD-ROM drive

Ÿ PC Card (PCMCIA)

4.Power on the computer.

5. Determine if the problem has changed.

6.If the problem does not occur again, reconn removed devices one at a time until you fin failing FRU.

7.If the problem remains, replace the followin

one at a time. Do not replace a non-defect

ŸCharger board

Ÿ Audio & battery function connection board

ŸLCD assembly

ŸSystem board

ThinkPad i Series 1400/150039