IBM 7212 102 Service Manual page 34

5. Perform the cover removal procedure. Refer to "Removing and Replacing the
6. Visually inspect all of the internal components in the enclosure. Look for any
7. Physically check each cable connection and ensure all cables are fully seated
8. Ensure that the internal SCSI cables are connected correctly for the desired SCSI
Are their any signs of damage, wear, or loose cables?
NO
YES
Step 15
This step checks that the SCSI address switch settings are correct and that the
address cables are plugged into the drives correctly.
Are the SCSI addresses set correctly with the SCSI cables plugged securely and
is the cable in good condition?
NO
YES
Step 16
This step determines whether the internal SCSI bus cable is the source of the
problem.
1. Press the power switch to turn off the power to the 7212 Storage Enclosure.
2. Disconnect the internal SCSI cable from the drives.
3. Inspect the SCSI cable and connectors for signs of damage, such as bent pins or
4. Ensure that the internal SCSI cables are connected correctly for the desired SCSI
Is the internal SCSI cable in good condition?
NO
YES
20
7212 Storage Device Enclosure Service Guide
Cover" on page 28.
signs of wear, damage, contamination, or excessive heat.
and secured.
configuration (split or single SCSI bus.)
Plug the enclosure into an electrical source and press the power On
switch to determine if the connection inspection fixed the problem.
If the enclosure does not power up normally, go to Step 15. If the
enclosure powers on and appears to run normally, reassemble the
enclosure, and then return to Step 1.
Replace the damaged component or reseat the cable, reassemble
the enclosure and then return to Step 1.
Replace the cable, if necessary. Set the SCSI address switch to the
proper address and securely seat the cables, then return to Step 1.
To set the SCSI address switch and secure the cables correctly, refer
to the instructions in the 7212 Model 102 Storage Device Enclosure
Setup and Operator Guide.
Go to Step 16.
damaged wires.
configuration (split or single SCSI bus.)
Replace the internal SCSI cable (see "Removing and Replacing the
SCSI Cable" on page 39), reassemble the enclosure, and then return
to Step 1.
Reassemble the enclosure, and then go to Step 17.