IBM ThinkPad 560Z, Hardware Maintenance Manual

Page: 13 / 88

Symptoms (Verified) Go To
Symptoms cannot be
re-created (Intermittent
problems). Use the
customer-reported
symptoms and go to
“Symptom-to-FRU
Index” on page 21.
Diskette Drive Checkout
Do the following to isolate the problem to a controller,
drive, or diskette. A blank, write-enabled, formatted 2HD
diskette is required.
FDD-1 represents an external diskette drive attached
through the external diskette drive connector.
FDD-2
represents the external diskette drive attached to the port
replicator.
Attention: Make sure that the diskette does not have more
than one label attached to it. Multiple labels can cause
damage to the drive or cause the drive to fail.
Do the following to select the test device:
See “Running the Diagnostics” on page 33 for details.
1. Go to the advanced diagnostic mode by pressing
Ctrl
+
A from the Easy-Setup test menu.
2. Click on Exit twice.
3. Click on FDD-1 or FDD-2 to start the test.
4. Insert the blank diskette when instructed and follow
the instructions on the screen.
5. If the controller test detects an error, FRU code 10
appears. Replace the system board.
6. If the controller test runs without errors, the drive
read/write tests start automatically. If a drive test
detects an error, FRU code 50 for FDD-1 or 51 for
FDD-2 appears. If the diskette itself is known to be
good, replace the drive.
7. If the FDD-2 test detects an error, move the drive to
the computer's diskette drive connector directly, if
possible, and test it again as FDD-1.
If no errors occur in the FDD-1 position, the drive is
not defective. Go to “Port Replicator Checkout” on
page 13 to isolate the port replicator problem.
Keyboard or Auxiliary Input Device
Checkout
If the internal keyboard does not work or an unexpected
character appears, make sure that the flexible keyboard
cable is firmly connected to the system board. If it is firmly
connected, then run the Keyboard Test. If an external
keyboard is connected, remove it before running the
ThinkPad 560Z HMM
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