When analyzing an intermittent problem, do the fo

1. Run the advanced diagnostic test for the board in loop mode at least 10 times.

2. If no error is detected, do not replace

3.If any error is detected, replace the F the FRU code.. Rerun the test to verify errors exist.

Undetermined Problems

You are here because the diagnostic tests di which adapter or device failed, which installed incorrect, whether a short circuit is suspected the system is inoperative. Follow these procedur isolate the failing FRU (do not isolate nondefe

Verify that the power supply being used at t failure is operating correctly. (See “Power Syst Checkout” on page 32).

1.Power off the computer.

2.Visually check them for damage. If any pr found, replace the FRU.

3. Remove or disconnect all of the following de

a.Non-IBM devices

b.Devices attached to the ThinkPad Port Replicator with Advanced Etherjet Feature

c.Printer, mouse, and other external device

d.Battery

e. Hard disk drive

f.DIMM

g.CD-ROM and Diskette Drive in the Combobay (UltraBay FX)

h.PC Cards (PCMCIA)

4.Power on the computer.

5. Determine if the problem has changed.

6. If the problem does not recur, reconnect t devices one at a time until you find the f

7. If the problem remains, replace the followin one at a time. Do not replace a non-defect

a.System board

b.LCD panel

c.CPU card

ThinkPad 390X / i 1700 45HMM

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IBM I 1700 manual Undetermined Problems