CD-ROM Checkout
Do the following to isolate the problem to a controller,
drive, or CD-ROM. Make sure that the CD-ROM disc does
not have any label attached to it. The label can cause
damage to the drive or can cause the drive to fail.
Do the following to select the test device:
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 CD-ROM/DVD Test.
4. Follow the instructions in the message window.
If an error occurs, reseat the connector on the system
board.
If the error still remains:
1. Reseat the Combobay.
2. Reseat the CD-ROM.
3. Replace the CD-ROM.
4. Replace the Combobay Interposer card.
5. Replace the system board.
Fan Checkout
To check the Fan, do the following:
1. Boot from and start PC-Doctor DOS. (See “PC-Doctor
DOS System Diagnostics” on page 48 for details.)
2. Select Diagnostics.
3. Select Other Devices.
4. Select Fan.
5. Follow the instructions in the message window.
28 ThinkPad 390X / i 1700 HMM