MAP 0380: Power Distribution Unit (PDU)
001 (continued)
Problem detected concerning power in frame.
Attention: When servicing frame(s) in a parallel environment, powering off a frame will cause all parallel
jobs to terminate. The switch network can not be re-initialized until power is restored to the frame, or the
frame is removed from the active configuration in a multi-frame system. Refer to "Removing and Restoring
Switch Resources" in
IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-
dures, for these procedures.
Note: PDU is an acronym for Power Distribution Unit.
– Check the condition of the following LEDs:
Main power switch LED
PDU panel LED
Frame supervisor LEDs.
– The following table contains a prioritized list of conditions.
Find the first condition that describes your problem, then perform the suggested action:
Note: The system monitor log can be viewed by issuing the following command:
errpt -a -N sphwlog | pg
on the control workstation.
Priority
Condition
Action
1
Main power switch LED is Off
-AND- PDU rear panel LED is Off
-AND- Frame Supervisor LEDs are Off.
Go to “MAP 0390: Supervisor Power Problem” on
page 1-229.
2
Main power switch LED is On
-OR- PDU rear panel LED is On,
-BUT- all frame supervisor LEDs are Off.
Go to “MAP 0400: Supervisor Power 12 V dc
Problem” on page 1-237.
3
Main power switch LED is On
-AND- PDU rear panel LED is Off,
-BUT- some frame supervisor LEDs are On.
Go to “MAP 0410: Supervisor Power 24 V dc
Problem” on page 1-244.
4
Main power switch LED is Off.
Go to “MAP 0420: Main Power Switch” on
page 1-247.
5
System monitor log reports “dc Power
Loss“ for any bulk dc power supplies.
Go to “MAP 0430: dc Power Loss from Bulk dc
Power Supply(s)” on page 1-250.
6
Frame supervisor detecting problem:
Frame supervisor green LED #2
(dc OK) is flashing.
Frame temperature is over 40° C.
Go to “MAP 0450: Frame Environment” on
page 1-262.
7
Problem with 48 V dc power distribution
to processor node(s) or switch assem-
blies.
Go to “MAP 0480: Open in 48 V dc Distribution” on
page 1-283.
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-227
Summary of Contents for RS/6000 SP
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