Analyzing Power Problems; Start Analyzing Power Problems Here - IBM i 830 Repair Manual

2. Use DSPSYSVAL (the Display System Value command) to verify that the
3. Attention: Before exchanging any part, power off the system (see "Powering

Analyzing Power Problems

Start Analyzing Power Problems Here

Table 4. Start Table
Symptom
There may or may not be a system reference code (SRC)
displayed on the control panel.
The system attention light is off, function 5 SRCs can
exist without an attention light when function 11 through
19 is displayed on the panel.
System unit does not become powered on.
The system does not become powered off.
Is Normal or Auto mode on the control panel selected (see iSeries Service
Functions)?
Yes No
↓
Select Normal or Auto mode on the control panel.
This ends the procedure.
system value under QPWRRSTIPL on the Display System Value display is
equal to 1.
Is QPWRRSTIPL equal to 1?
Yes No
↓
Use CHGSYSVAL (the Change System Value command) to set
QPWRRSTIPL equal to 1.
This ends the procedure.
On and Powering Off the System and Logical Partitions" on page 922).
Exchange the Tower card (TWRCARD) (see "Chapter 4. Removal and
Installation Procedures" on page 617).
Note: If you exchange the tower card, you must set the system date (QDATE)
and time (QTIME).
This ends the procedure.
Power Problems
What You Should Do
In addition to function 11, SRCs can also appear in
function 5. Look at function 5 and record the SRC
shown. Go to "(1xxx) System Power Control Network
(SPCN) Reference Codes" on page 64 of this manual and
find the reference code. xSeries Server (formerly
Netfinity) frames will only have the frame number
flashing on the failing unit's SPCN card assembly, which
is visible after removing the cover.
Look at function 5 and record the SRC shown. Go to
"(1xxx) System Power Control Network (SPCN)
Reference Codes" on page 64 of this manual and find the
reference code. (Function 5 is not selectable when
function 5 SRCs don't exist.)
Go to "Cannot Power On System Unit (No SRC)" on
page 38.
Go to "System or Expansion Unit Cannot Become
Powered Off" on page 56.
Chapter 1. Starting Problem Analysis
IPL Problems
37