IBM 88371RU, Maintenance And Troubleshooting Manual

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Table 5. SCSI identifier (continued)
SCSI Channel Code (z) Descriptions
4 Channel 3
5 Channel 1 & 3
6 Channel 2 & 3
7 Channel 1, 2, & 3
8 Channel 4
9 Channel 1 & 4
A Channel 2 & 4
B Channel 1, 2, & 4
C Channel 3 & 4
D Channel 1, 3, & 4
E Channel 2, 3, & 4
F Channel 1, 2, 3, & 4
b. Confirm that the channel(s) identified from the error in step 2a on page 113
is (are) the cause of the error by verifying that the error presents itself only
when the offending channel is reconnected.
c. Check termination of identified channel.
Note: SCSI channel termination details, if any, appear elsewhere in this
publication.
d. Check for proper backplane jumper configuration.
Note: SCSI channel jumper details, if any, appear elsewhere in this
publication.
e. Check for proper cabling configuration in systems that use DASD status
cables. Reconnect all cables removed in step 1 on page 113.
f. Disconnect one drive at a time attached to the channel identified in step 2a
on page 113; then, reboot to determine which drive is causing the error.
g. Replace SCSI cable.
h. Replace SCSI backplane.
FFFF or other code not listed
1. Place download jumpers on the controller and try to flash the firmware code to
the card.
2. Isolate between SCSI subsystem and controller by disconnecting all SCSI
cables attached to the suspect card, and reboot.
CAUTION:
Do not press F5. Doing so will change the server’s configuration.
If ISPR code is EF10 after disconnecting cables, follow the steps below until the
error is eliminated:
a. Identify which channel is causing the error by reconnecting cables one at a
time and rebooting until the error returns.
b. Check termination of identified channel in step 2a.
Note: SCSI channel termination details, if any, appear elsewhere in this
publication.
114
xSeries 336 Type 1879 and Type 8837: Hardware Maintenance Manual and Troubleshooting Guide