IBM THINKPAD S05L-1270-01 - Manual (Page 143)

3. Press Enter.
4. Insert the blank diskette when instructed.
5. Type Y (Yes) to the question on the screen.
6. Select FDD-1 or FDD-2 and press Enter to run the
diskette drive test.
7. If the controller test detects an error, FRU code 10
appears. Replace the system board.
8. If the controller test runs without errors, the drive
read/write tests start automatically.
9. If the 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.
10. If 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 134 to isolate the replicator problem.
Status Indicator Checkout
If an LED problem occurs, do the following:
1. Power off the computer.
2. Power on the computer.
3. All the LEDs in the indicator panel should turn on for
a moment soon after the computer is powered on.
Make sure they turn on.
If the problems remains, replace the system board.
Power Systems Checkout
To verify the symptom of the problem, power on the
computer using each of the following power sources.
1. Remove the battery pack and diskette drive.
2. Connect the AC Adapter and check that power is
supplied.
3. Disconnect the AC Adapter and install the charged
battery pack; then check that power is supplied by the
battery pack.
If you suspect a power problem, see the appropriate power
supply check in the following list:
“Checking the AC Adapter”
“Checking Operational Charging” on page 132
“Checking the Battery Pack” on page 133
“Checking the Backup Battery” on page 134
Checking the AC Adapter: You are here
because the computer fails only when the AC Adapter is
used.
If the power problem occurs only when the port
replicator is used, replace the replicator.
ThinkPad 560, 560E (2640) 131