FRU Codes
If an error is detected by the diagnostic tests, a
four-digit
FRU code is displayed. Two suspected FRU codes are
shown. The two
leftmost digits
indicate the first FRU code.
The following table shows the FRU codes and their FRUs.
The most probable failing FRU is shown first. Always start
with the first FRU then continue down the list. The two
rightmost digits
indicate the net FRU code. Do these FRU
replacements in the same way as with the first FRU codes.
Undock the computer from the Dock I to check that the
FRU code appears with the computer only. If a FRU code
appears, replace the FRU by following the instructions in
the Symptom-to-FRU Index for the computer being
serviced. Then dock the computer on the Dock I to check
if any FRU codes appear. Use the table below.
If the problem remains after the FRUs are replaced, go to
“Undetermined Problem” on page 357.
FRU Code FRUs of the Dock I
10 1. Main board
2. I/O card
15 1. Audio card
2. I/O card
30 Reserved
32 1. See “External Keyboard/Auxiliary Input
Device Checkout” on page 465.
2. Main board
3. I/O card
33 1. External mouse
2. Main board
3. I/O card
45 1. See “External Display Self-Test” on
page 464.
51 1. Diskette drive (FDD-2)
2. Main board
3. I/O card
56 1. Diskette drive (FDD-2)
2. Main board
3. I/O card
61 1. Hard disk drive (HDD-2)
2. Main board
3. HDD installation kit
80 Reserved
90 Reserved
356 IBM Mobile Systems HMM - Volume 1
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