Undetermined Problems
You are here because the diagnostic tests did not identify
which adapter or device failed, which installed devices are
incorrect, whether a short circuit is suspected, or whether
the system is inoperative. Follow these procedures to
isolate the failing FRU (do not isolate non-defective FRUs).
Verify that the power supply being used at the time of the
failure is operating correctly. (See “Power System
Checkout” on page 27.)
1. Power off the computer.
2. Visually check for damage. If any problems are found,
replace the FRU.
3. Remove or disconnect all of the following devices:
a. Non-IBM devices
b. Printer, mouse, and other external devices
c. Battery ASM
d. Hard disk drive
e. DIMM
f. PC Cards (PCMCIA)
4. Power on the computer.
5. Determine if the problem has changed.
6. If the problem does not recur, 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.
a. System board
b. LCD panel ASM
General Description
39
Summary of Contents for ThinkPad 240X
Page 1: ...S19K 5649 00 IBM Mobile Systems ThinkPad 240X 2609 Hardware Maintenance Manual May 2000 ...
Page 4: ...iv ThinkPad 240X ...
Page 24: ...18 ThinkPad 240X ...
Page 79: ...Description FRU Number Power cord Argentina 2 PIN 36L8870 General Description 73 ...
Page 84: ...IBM Part Number 19K5649 Printed in U S A S19K 5649 ðð ...