IBM i 830 Repair Manual page 387

↓
Use the service information for the specific disk unit to analyze
the status of the failing unit.
This ends the procedure.
26. Set the power switch on the failing 9337 disk unit to the Off position, then to
the On position.
After 4 minutes, does the 9337 Data display contain the value *xxx?
Yes No
↓
Go to step 29 of this procedure.
27. Does the system continue normal operation in 3 to 4 minutes?
No Yes
↓
Go to step 33 of this procedure.
28. Go to step 30 of this procedure.
29. When the 9337 Disk Unit Data display contains the value B000, the disk unit
has reached a ready status, but the system has not taken the ready status
messages.
Does the 9337 Disk Unit Data display contain the value B000 in less than 4
minutes?
Yes No
↓
Use the service information for the specific disk unit to analyze the
status of the failing unit.
This ends the procedure.
30. Perform the following:
a. Check the cable connections between all of the units on the storage device
I/O processor card that is connected to the failing unit.
Correct any loose connections and ensure that the terminating plug is
installed tightly.
b. Check the address switches on the backs of all of the units connected to
the magnetic storage I/O processor card that is connected to the failing
disk unit.
Notes:
1) If the device does not have address switches, continue with the next
step of this procedure if you are servicing one of these units.
2) Ensure that each address switch displays the correct number. See the
system configuration list. The latest level printout should be stored, ask
the customer for this data.
c. If two or more address switches display the same number, change the
address number of one or more units so that each address switch displays
the correct number (see the system configuration list).
d. For each unit that had its address switch changed, set the unit Power
switch off, then on again.
31. Does the system continue normal operation in 3 to 4 minutes?
No Yes
↓
Go to step 33 of this procedure.
32. Set the Power switch on the disk unit to the Off position, then to the On
position.
Does the system continue normal operation in 3 to 4 minutes?
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
LIC PIPs
373