1. Go to the advanced diagnostic mode by pressing
Ctrl+A from the diagnostic menu.
2. Select FDD-1 or FDD-2 and press the spacebar. A √
mark appears next to the selection.
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.
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 that all LEDs turn on.
If the problems remains, replace the following cards
one at a time:
Subcard
System board
Power Systems Checkout
To verify the symptom of the problem, power on the
computer using each of the power sources as follows.
1. Remove the battery pack.
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 listed below.
“Checking the AC Adapter” on page 34.
“Checking Operational Charging” on page 34.
“Checking the Battery Pack” on page 35.
“Checking the Backup Battery” on page 36.
ThinkPad 380, 385 (2635) 33