1. Look at the 4 rightmost characters of the Data display for function 11. These 4
characters are the unit reference code.
2. Find the unit reference code in the following table.
Notes:
1. If the failing item is a failing item (FI) code, go to “Failing Items” on page 479
to determine which part number associated with the FI code is failing.
2. If the failing item is a type number, go to “Type, Model, and Part Number list”
on page 885 to determine the part number.
3. If the failing item is a symbolic FRU, go to “Symbolic FRUs” on page 495 to
determine the part number.
Reference Code Description/Action Perform all actions before exchanging Failing Items Failing Item
1110 to 111F Failure of CEC power supply not identified by SPCN.
This referenc code can be caused by something holding the system Power
On Reset (POR) line active.
TWRCARD
ANYBUS
2222 Service processor failure caused machine check interrupt.
Before exchanging the TWRCARD, remove the adapter cards from the
TWRCARD and perform an IPL. If the IPL completes successfully, one of
the adapter cards you removed is defective.
TWRCARD
ANYBUS
3333 SPCN to CSP interface error.
An attempt to communicate between the SPCN and the CSP processor
failed.
TWRCARD
3334 CSP to VPD Collector interface error.
An attempt to communicate between the CSP and the VPD Collector failed.
CLKCARD
TWRCARD
BACKPLN
4444 Power on request failure
A power-on request was not completed successfully. A control
panel-detected power-on failure occurred.
TWRCARD
BACKPLN
5553 Incorrect key used or the key is not completely inserted
The key inserted is not the correct key or is not completely inserted.
CTLPNL
TWRCARD
AABB Remote power-on failure
An attempt was made to power on the system by a remote power-on
operation with the keylock mode on the control panel set to Secure or
Manual. To correct the problem, select Normal or Auto mode on the control
panel and perform the remote power-on operation again, if necessary.
USER
TWRCARD
CTLPNL
AACC Service processor power-on failure
An attempt was made to power on the system from the service processor
with Secure or Manual mode selected on the control panel. To correct the
problem, select Normal or Auto mode on the control panel and perform
the service processor power-on operation again, if necessary.
Note: This reference code may occur if the service processor card was
exchanged and Manual mode was selected. Select Normal mode on the
control panel.
USER
CTLPNL
TWRCARD
AADD Manual power-on failure
An attempt was made to power on the system manually with Secure or
Auto mode selected on the control panel. To correct the problem, select
Manual or Normal mode on the control panel and manually power on the
system again.
USER
CTLPNL
0000
Chapter 2. Unit Reference Codes 63
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