System Hangs Or Loops (No Src) - IBM iSeries Series Hardware Problem Analysis And Isolation

DANGER
To prevent the system from powering on automatically during service procedures, select Manual or Secure
mode on the system unit control panel. (RSFTD214)
Attention: Before exchanging any part, power off the system.
– Communications cable
– Communications adapter card
– Modem
– The SYSBKPL (see symbolic FRU "SYSBKPL" on page 464).
Notes:
a. Attempt to perform an IPL from a remote location after exchanging each part.
b. If you exchange the SYSBKPL, you must set the correct date and time. To set the correct date
and time, perform "Cannot perform IPL at a specified time (no SRC)" on page 19, step 4 (See
page 20).
If the remote IPL does not complete successfully after you exchange all the parts listed, ask your
next level of support for assistance.
This ends the procedure.
12. Display the failing item information for the log entry. Items at the top of the failing item list are more
likely to fix the problem than items at the bottom of the list.
Exchange the failing items one at a time until the problem is repaired. After exchanging each one of
the items, verify that the item exchanged repaired the problem.
Notes:
a. See the "Failing items" on page 249 topic, and the Symbolic FRUs topic.
b. When exchanging FRUs, go to Remove and replace procedures. If you are exchanging a disk
unit, go to Recovery procedures.
c. After exchanging an item, go to Verify the repair
Once the problem has been resolved, close the log entry.
This ends the procedure.
System hangs or loops (no SRC): You are here because:
v System operation is hung (very low processor activity indicated on the control panel with workstation
input inhibited).
v System operation is in a loop (very high processor activity indicated on the control panel with
workstation input inhibited).
A system hang or loop is the result of either:
v A software failure.
v Software improperly handling a hardware failure.
The purpose of this procedure is to:
1. Help you report the problem with enough error data to permit an APAR investigation to resolve the
software problem.
2. Provide you with direction to identify any possible hardware failure.
Perform the following:
1. Is the system operational from at least one workstation?
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iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and Isolation