IBM pSeries 670 Service Manual page 271

Step 152n-6
Are there any DASD in positions A8, A9, Aa, or Ab of the DASD backplane found in "Step 152n-2"
on page 250 and "Step 152n-3" on page 250?
Yes Go to "Step 152n-7".
No Go to "Step 152n-15" on page 252.
Step 152n-7
Turn on the power.
Step 152n-8
Did the error code recorded in "Step 152n-1" on page 250 reappear?
Yes Go to "Step 152n-14".
No One of the DASD just removed is defective. Go to "Step 152n-9".
Step 152n-9
Turn off the power. Make sure all green "power good out" LEDs of all installed I/O subsystem DCAs are
off.
Step 152n-10
Reinstall one of the DASD removed in "Step 152n-6".
Step 152n-11
Turn on the power.
Step 152n-12
Did the error code recorded in "Step 152n-1" on page 250 reappear?
Yes The DASD just reinstalled is defective. Replace it. This ends the procedure. Return the system
to its original configuration.
Go to "MAP 0410: Repair Checkout" in the RS/6000 and Eserver pSeries Diagnostic Information
for Multiple Bus Systems.
No Go to "Step 152n-13".
Step 152n-13
Have all DASD that were removed in "Step 152n-6" been reinstalled?
Yes The problem has changed. This ends the procedure.
No Go to "Step 152n-9" to reinstall the next DASD.
Step 152n-14
Turn off the power. Make sure all green "power good out" LEDs of all installed I/O subsystem DCAs are
off.
Chapter 3. Maintenance Analysis Procedures
251