Troubleshooting 2U Enclosures; Pcm Faults - Lenovo ThinkSystem DS Series Hardware Installation And Maintenance Manual

Troubleshooting 2U enclosures

The following sections describe common problems that can occur with your enclosure system, and some possible
solutions. For all of the problems listed in
indicate a fault. See also
Table 21 2U alarm conditions
Status
PCM alert - loss of DC power from a single
PCM
PCM fan fail
SBB module detected PCM fault
PCM removed
Enclosure configuration error (VPD)
Low warning temperature alert
High warning temperature alert
Over temperature alarm
I 2 C bus failure
Ops panel communication error (I
RAID error
SBB interface module fault
SBB interface module removed
Drive power control fault
Drive power control fault
Insufficient power available
For details about replacing modules, see
NOTE: See the Event Descriptions Reference Guide for more information about enclosure-related events and
recommended actions.

PCM Faults

Symptom
Ops panel Module Fault LED is
amber
1
Fan Fail LED is illuminated on
PCM 2
1-See Figure 31 (page 37)
2-See Figure 33 (page 39)
Table
"Operator's (Ops) panel" (page
2 C)
"Module removal and replacement" (page
Cause
Any power
fault
Fan failure
for visual reference of Ops panel LEDs.
for visual reference of PCM LEDs.
21, the module fault LED on the Ops panel will light amber to
36).
Severity
Fault - loss of redundancy
Fault - loss of redundancy
Fault
Configuration error
Fault – critical
Warning
Warning
Fault – critical
Fault – loss of redundancy
Critical fault
Fault – critical
Fault – critical
Warning
Warning – no loss of disk power S1
Fault – critical–loss of disk
power
Warning
Recommended action
Verify AC mains connections to PCM are
live
Replace PCM
Alar
m
S1
S1
S1
None
S1
S1
S1
S4
S1
S1
S1
S1
None
S1
None
116).
Troubleshooting 2U enclosures 103