IBM iSeries Series Hardware Problem Analysis And Isolation page 208

v No: You cannot continue isolating the problem. Use the original SRC and exchange the failing items,
starting with the highest probable cause of failure (see the failing item list for this reference code in
the System Reference Codes) topic. If the failing item list contains FI codes, see "Failing items" on
page 249 to help determine part numbers and location in the system.
This ends the procedure.
5. Record the SRC on the Problem summary form (see Problem summary form).
Is the SRC the same one that sent you to this procedure?
v Yes: Determine the device unit reference code (URC) from the SRC. If the Disk Configuration Error
Report, the Disk Configuration Attention Report, or the Disk Configuration Warning Report display
appears on the console, the device URC is displayed under Reference Code. This is on the same
line as the missing device.
Is the device unit reference code 3020, 3021, 3022, or 3023?
– Yes: Continue with the next step.
– No: Go to step 7 (See page 196).
v No: A different SRC or reference code occurred. Use the new SRC or reference code to correct the
problem (see "Starting point for all problems" on page 2).
This ends the procedure.
6. A unit reference code of 3020, 3021, 3022, or 3023 indicates that there is a problem on an I/O card
SCSI bus. The problem can be caused by a device that is attached to the I/O card that:
v Is not supported.
v Does not match system configuration rules. For example, there are too many devices that are
attached to the bus.
v Is failing.
Perform the following:
a. Look at the characters on the control panel Data display or the Problem Summary Form for
characters 9 - 16 of the top 16 character line of function 12 (word 3).
Use the format BBBB-Cc-bb (BBBB = bus, Cc = card, bb = board) to determine the card slot
location for the I/O card (see Locations and addresses).
b. The unit reference code indicates the SCSI bus that has the problem:
URC
3020
3021
3022
3023
c. To find the bus and device locations, see Locations and addresses.
d. Find the printout that shows the system configuration from the last IPL and compare it to the
present system configuration.
Note: If configuration is not the problem, a device on the SCSI bus may be failing.
e. If you need to perform isolation on the SCSI bus, go to "SDIOP-PIP16" on page 192.
This ends the procedure.
7. The possible failing items are FI codes FI01105 (90%) and FI01112 (10%). Find the device unit
address from the SRC (see SRC address formats). Use this information to find the physical location of
the device. Record the type and model numbers to determine if the addressed I/O card supports this
device.
Is the device given support on your system?
v Yes: Perform the following:
a. Exchange the device.
b. Perform an IPL to DST (see Performing an IPL to DST in the iSeries Service Functions
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iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation
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