Map 152N: Dasd Subsystem Power Problem - IBM pSeries 670 Service Manual

MAP 152n: DASD Subsystem Power Problem

Step 152n-1
Record the error code and location code(s) that sent you to this MAP.
Step 152n-2
Press the green start service button on the panel with the UEPO switch.
Determine the I/O subsystem number from the error code (10yy xxxx) and the following list. The remaining
steps of this map refer to this I/O subsystem:
v If yy=14, I/O subsystem number is 1, location is U1.9
v If yy=15, I/O subsystem number is 2, location is U1.5
v If yy=16, I/O subsystem number is 3, location is U1.1
v If yy=17, I/O subsystem number is 4, location is U1.13
Step 152n-3
Examine the last 2 characters of the error code recorded in "Step 152n-1", and use the following list to
determine which DASD backplane to service.
v If the last 2 characters of the error code is 96, then the following steps refer to DASD backplane 1 of
I/O subsystem number found in "Step 152n-2".
v If the last 2 characters of the error code is A6, then the following steps refer to DASD backplane 2 of
I/O subsystem number found in "Step 152n-2".
v If the last 2 characters of the error code is B6, then the following steps refer to DASD backplane 3 of
I/O subsystem number found in "Step 152n-2".
v If the last 2 characters of the error code is C6, then the following steps refer to DASD backplane 4 of
I/O subsystem number found in "Step 152n-2".
Step 152n-4
Turn off the power. Examine the green "power good out" LEDs of both I/O subsystem DCAs.
Step 152n-5
Are all the green "power good out" LEDs of both I/O subsystem DCAs off?
Yes Go to "Step 152n-6" on page 251.
No Call for support.
250 Eserver pSeries 670 Service Guide