Chapter 9 Troubleshooting
© 2017 Harmonic Inc. All rights reserved. 292 Harmonic MediaGrid Release 4.1
Troubleshooting the ContentStore 5840
For all of the problems listed in Table 9–1, the module fault LED on the operator’s panel (see
Operator’s Panel) will light amber to indicate a fault.
Thermal Monitoring and Control
The ContentStore 5840 uses extensive thermal monitoring and takes a number of actions to
ensure component temperatures are kept low and also to minimize acoustic noise. Air flow is
from the front to the rear of the enclosure.
Table 9–1: Alarm Conditions
Status Severity
PSU alert – loss of DC power from a single PSU Fault – loss of redundancy
Cooling module fan failure Fault – loss of redundancy
I/O module detected - PSU fault Fault
PSU removed Configuration error
Enclosure configuration error (VPD) Fault – critical
Low temperature warning Warning
High temperature warning Warning
Over-temperature alarm Fault – critical
Under-temperature alarm Fault – critical
I
2
C bus failure
Fault – loss of redundancy
Operator’s panel communication error (I
2
C)
Fault – critical
RAID error Fault – critical
SBB I/O module fault Fault – critical
SBB I/O module removed Warning
Drive power control fault Warning – no loss of drive power
Drive power control fault Fault – critical: loss of drive power
Insufficient power available Warning
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