Troubleshooting the small disk enclosure system
Alarm conditions
The following sections describe common problems that can occur with your small disk enclosure system,
and some possible solutions. For the problems listed in the table below, the pertinent fault LEDs on the
Table 13. Alarm conditions
Status
Severity
Alarm
PCM alert – loss of DC power
from a single PCM
Fault – no loss of redundancy
S1
PCM alert – loss of DC power
from a single PCM
Fault – loss of redundancy
S1
PCM fan fail
Fault – loss of redundancy
S1
SBB module detected PCM fault
Fault
S1
PCM removed
Configuration error
None
Enclosure configuration error
(VPD)
Fault – critical
S1
Low warning temperature alert
Warning
S1
High warning temperature alert
Warning
S1
Over temperature alarm
Fault – critical
S4
I2C bus failure
Fault – loss of redundancy
S1
Ops panel communication error
(I2C)
Critical fault
S1
SBB interface module fault
Fault – critical
S1
SBB interface module removed
Warning
None
Drive power control fault
Warning – no loss of drive power S1
Drive power control fault
Fault– critical – loss of drive
power
S1
Insufficient power available
Warning
None
Note: For details on how to remove and replace a module see Chapter 6., “Module Removal and
Replacement."
Power Cooling Module (PCM) faults
Table 14. Alarm conditions
Symptom
Cause
Action
Ops panel module fault LED
amber
Any power fault.
Check AC mains connections to
PCM is live.
Fan fail LED is illuminated on
PCM.
A fan failure.
Replace PCM.
Chapter 5. Troubleshooting and problem solving 29
Summary of Contents for 4957-J10
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