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Audio Checkout
Do as follows:
1. Boot from and start PC-Doctor DOS. (See “PC-Doctor
DOS System Diagnostics” on page 48 for details.)
2. Select Interactive Tests.
3. Select Internal Speaker.
If no sound is played, replace the speaker or the
system board.
4. Select Stereo Speaker.
If no music is played, replace the speaker or the
system board.
Diskette Drive Checkout
Do the following to isolate the problem to a controller,
drive, or diskette. A scratch, write-enabled, non-defective,
high-density (2HD) diskette is required.
CAUTION:
Make sure that the diskette does not have more than
one label attached to it. Multiple labels can cause
damage to the drive or can cause the drive to fail.
Do the following to select the test device. See “Running
the Diagnostics” on page 48 for details.
1. Boot from and start PC-Doctor DOS. (See “PC-Doctor
DOS System Diagnostics” on page 48 for details.)
2. Select Diagnostics.
3. Select Diskette Drives.
4. Follow the instructions in the message window.
If an error occurs with the internal diskette drive, reseat the
connector on the system board.
If the error still remains:
1. Reseat the Combobay.
2. Reseat the Diskette Drive.
3. Replace the Diskette Drive.
4. Replace the Combobay Interposer card.
5. Replace the system board.
ThinkPad 390X / i 1700 HMM
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