Cisco ONS 15454, Hardware Installation Manual

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Fan Speed
The fan speed is controlled by the TNC, TNCE, TSC, or TSCE card temperature sensors. The sensors measure
the input air temperature at the fan-tray assembly. Fan speed options are low, medium, and high. If the TNC,
TNCE, TSC, or TSCE card fails, the fans automatically shift to high speed. The temperature that the TNC,
TNCE, TSC, or TSCE sensors measure appear on the LCD screen.
Fan Failure
If one or more fans fail on the fan-tray assembly, replace the entire assembly. You cannot replace individual
fans. The red Fan Fail LED on the front of the fan-tray illuminates when one or more fans fail. The red Fan
Fail LED clears after you install a working fan-tray.
NTP-G257 Install the Fan-Tray Assembly in the ONS 15454 M6
Shelf
This procedure installs the 15454-M6-FTA or 15454-M6-FTA2 fan-tray assembly
in the ONS 15454 M6 system. Purpose
Small slot-head screwdriver
Tools/Equipment
• NTP-G252 Install the ONS 15454 M6 Shelf , on page 294 .
• NTP-G259 Open and Remove the Standard Door of the ONS 15454 M6
Shelf , on page 327
.
• Connect the chassis to the office ground. For detailed instructions on how
to ground the chassis, see the Electrostatic Discharge and Grounding Guide
for Cisco CPT and Cisco ONS Platforms .
Prerequisite Procedures
Required
Required/As Needed
Onsite Onsite/Remote
None Security Level
The 15454-M2-FTA2 is compatible with R9.2.0 and later releases. Note
Do not operate an ONS 15454 M6 without an air filter. For information on the air filter, see NTP-G114 Inspect
and Replace the Air Filter, on page 435 .
Caution
Do not force a fan-tray assembly into place. Doing so can damage either the connectors on the fan tray or the
connectors on the backpanel of the shelf, or both.
Caution
Cisco ONS 15454 Hardware Installation Guide
388
Installing the ONS 15454 M6 Shelf
Fan Speed