Analyzing Ipl Problems; Cannot Perform Ipl (No Src); System Hangs Or Loops (No Src) - IBM Application System/400 Service Information

Analyzing IPL Problems
Cannot Perform IPL (No SRC)
1
Perform the following:
a. Verify that the power cable is plugged
into the power outlet.
b. Verify that the AC switch at the rear of
the system is set to the on position.
c. Verify that power is available at the
customer's power outlet.
2
Start an IPL by doing the following:
a. Perform an IPL using the type that the
system is currently set at (A, B, or D)
and mode M, (see "Selecting IPL and
Mode" on page 5-2).
b. Power on the system (see "Powering
Off and Powering On the System" on
page 5-2).
Does the I PL complete successfully?
No Yes
~ This ends the procedure.
3
Is a system reference code (11-2 xxxx
xxxx)
displayed on the control panel?
Yes No
Exchange the following part:
a. OOOO-Chassis See ''Type and
Part Number List" on
page 2-62 to determine the
part and see "Chassis" on
page 4-2 for the procedure.
This ends the procedure.
4
Go to Chapter 2, "Unit Reference Codes"
on page 2-1.
This ends the procedure.
System Hangs or Loops
(No SRC)
1
Ask the customer what the system was
doing before the hang or loop condition
occurred.
2
Perform the following:
a. Perform an IPL using the type that the
system is currently set at (A, B, or D)
and mode M.
b. Select function 21 (Bring Up DST).
c. Press Enter on the control panel.
Does the Dedicated Service Tools Pass-
word display appear on the console?
No Yes
~ Enter the password 22222222 and
continue with the next step of this
procedure.
Note: If this password is not
correct, ask the customer for the
correct password.
3
Is a system reference code (SRC) dis-
played on the control panel?
Note: You might have to wait a few
minutes before the SRC is displayed.
No Yes
~
Go to Chapter 2, "Unit Reference
Codes" on page 2-1.
This ends the procedure.
4
Perform the following:
a. Select function 22 (Main Storage
Dump).
b. Press Enter on the control panel.
c. Wait for the main storage dump to disk
to complete.
Notes:
1) The dump procedure takes a
minimum of 7 minutes.
2) SRCs indicated during a dump:
a) D1xx 31xx indicates loading a
special Horizontal Licensed
Internal Code.
Chapter 1. Starting Problem Isolation
1-5