Symptom/Error FRU/Action
861X
(Pointing device error when
TrackPoint III is enabled.)
1. Reseat the keyboard
Track Point III cable
at the E-Video card.
See “1080 Keyboard
Unit” on page 435.
2. Keyboard
3. External Mouse
4. System Board
I9990301
I9990302
I9990305
1. Reseat the boot
device.
2. Check the startup
sequence for the
correct boot device.
3. Check that operating
system has no failure,
or is installed correctly.
I9990303 1. System Board
Other codes not listed
above
1. Go to “Undetermined
Problems” on
page 419.
FRU Codes
If an error is detected by the diagnostic tests, a
four-digit
FRU code is displayed. The FRU code indicates two
suspected FRUs. Replace the FRU that is indicated by
the
two leftmost digits
first, then replace the FRU indicated
by the
two rightmost digits
. No FRU is assigned to code
00. If only one FRU is suspected, the other FRU code is
filled with zeros. See the referenced page before replacing
the FRU.
FRU Code FRU/Action
10 System Board
11 Processor Card
16 DSP Card
17 Front IR Unit
18 Rear IR Unit
20 Memory
(See “Memory Checkout” on page 393.)
30 Reserved
32 External Keyboard
33 External Mouse
40 LCD Assembly
45 External CRT
50 1. Reseat the Drive (FDD-1)
2. Diskette Drive (FDD-1)
51 1. Reseat the Drive (FDD-2)
2. Diskette Drive (FDD-2)
ThinkPad 755CE, 755CSE, 755CV, 755CX (9545) 411
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