Troubleshooting The Small Disk Enclosure System; Alarm Conditions - IBM Small J10 Series Manual

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
enclosure front panel will light amber to indicate a fault. See also "Operator's (Ops) panel" on page 6.
Table 13. Alarm conditions
Status
PCM alert – loss of DC power
from a single PCM
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
I2C bus failure
Ops panel communication error
(I2C)
SBB interface module fault
SBB interface module removed
Drive power control fault
Drive power control fault
Insufficient power available
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
Ops panel module fault LED
amber
Fan fail LED is illuminated on
PCM.
Severity
Fault – no loss of redundancy
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
Warning
Warning – no loss of drive power
Fault– critical – loss of drive
power
Warning
Cause
Any power fault.
A fan failure.
Chapter 5. Troubleshooting and problem solving 29
Alarm
S1
S1
S1
S1
None
S1
S1
S1
S4
S1
S1
S1
None
S1
S1
None
Action
Check AC mains connections to
PCM is live.
Replace PCM.