Ulnz4; Unp20; Uplf1; Upsunit - IBM i 830 Repair Manual

Symbolic FRUs

ULNZ4

Independent workstation and SDLC support:
The system considers an independent workstation to be an attached remote system
when it is attached using PC Support asynchronous communications on an ASCII
workstation controller.
Perform the following:
v See the ASCII Work Station Reference, SA41-3130-00 information for instructions
v See the device hardware maintenance and service information for instructions on
This ends the procedure.

UNP20

The internal code of the I/O card that detected the error may be defective.
Perform the following:
1. Replace the suspected card.
2. If the failure occurs again, contact your next level of support and report the
This ends the procedure.

UPLF1

The system may not have been able to complete the APPN session initiation due to
the number of jobs that were active when the time-out occurred.
The time-out condition could have been caused by a system performance problem.
System performance could be impacted by the capacity of the system. System
performance can also be impacted by processing requests from other systems in
the network.
For capacity planning and system performance information, refer to LPS:
Performance Tools for AS/400, GC41-5055-00.
This ends the procedure.

UPSUNIT

The UPS may be the failing item.
Note: The AMD in the UPS will be stopped when the UPS is not running on
Perform the following:
1. Is the SRC or problem on FC 5033, 5034, or 5035 frame?
606
iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
on how to verify that the remote system (independent workstation) that is
attached to the failing port is a supported device.
how to verify that the device is working correctly.
problem.
batteries or is charging the batteries on FC 5033, 5034, or 5035.
No Yes
↓
Go to the UPSUNIT symbolic FRU in the Migrated Expansion Tower
Problem Analysis, Repair and Parts.