Checking the Installed Devices List (3550)

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

Checking the Installed Devices List (3550)

Checking the Installed Devices List

At the start of the customer or advanced diagnostic tests, the installed devices list is displayed. Normally, all the adapters and devices that are installed are listed.

If the list contains an adapter or device that is not installed, go to 'Undetermined Problem'.
If an adapter or device is missing from the list, you have one of the following conditions:
- The system partition on the computer hard disk drive (fixed disk drive) or the Reference Diskette you are using does not contain the code (contained on an option diskette) required to support the device.
  Copy the option diskette of the missing device to the system partition of the computer hard disk drive or to the Reference Diskette.
- The SCSI interface on the system board of the 3550 Expansion Unit might have failed.
- An unrecognizable device or adapter is installed.
- The device missing from the list requires an additional diskette. (See the device service manual.)
- The device missing from the list is defective.
- An adapter is defective.
- A power supply voltage is not correct (see 'Power Systems Checkout').

If the adapter is on the list, run the adapter diagnostic tests.

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