Verified Symptoms Go To
Other symptoms (such
as LCD monitor
problems).
“Symptom-to-FRU
Index” on page 23, and
then go to “Other
Symptoms” on page 32.
Audio Checkout
1. Go to the diagnostic menu by selecting Test in the
Easy-Setup menu.
2. Select Audio and run the diagnostic tests.
3. If the test detects an audio problem, replace the
system board.
Diskette Drive Checkout
This checkout is to isolate the problem to a controller,
drive, or diskette. A write-enabled, blank, formatted 2HD
diskette is required.

FDD-1

represents a diskette drive in the ThinkPad
computer.
Attention
Make sure that the diskette does not have more than
one label pasted on its surface. Inserting diskettes
with multi-layered labels into the drive can damage it.
Take the following procedure to select the test device:
1. Click on Test in the Easy-Setup menu.
2. Press Ctrl+A to enter the advanced diagnostic menu.
The ThinkPad FRU Connections window appears.
3. Click on Exit The keyboard layout appears on the
screen.
4. Click on Exit.
5. Click on FDD-1.
6. Type Y (Yes) to the question that appears on the
screen. Insert a blank diskette into the drive when
instructed.
7. Press Enter to run the diskette drive test.
a. If the controller test detects an error and FRU
code 10 appears, replace the system board.
b. If the controller test runs without any errors, the
drive read/write tests start automatically.
c. If the drive read/write test detects an error and
either FRU code 50 for FDD-1 appears, replace
the drive.
If the drive is attached to a port replicator, go to
“Port Replicator Checkout” on page 18 to isolate
the replicator. Otherwise, go on to the next step.
8. If the drive is attached through a port replicator, go to
the service manual of the port replicator to isolate the
problem.
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