Cisco Model D-PCG1000 PowerKEY CAS Gateway Guide De Montage
Replacing a Dual Fan Unit on the
GQAM Modulator
GQAM Modulator
Overview
Introduction
The GQAM modulator (GQAM) has three dual fan units on the side panel. Each
of these units contains two fan rotors. You must replace the entire dual fan unit if
one of the fan rotors should fail. The fan units are designed to be "hot swappable,"
meaning that you do not necessarily have to power down the GQAM to replace a
fan unit that has failed.
of these units contains two fan rotors. You must replace the entire dual fan unit if
one of the fan rotors should fail. The fan units are designed to be "hot swappable,"
meaning that you do not necessarily have to power down the GQAM to replace a
fan unit that has failed.
Important: In order to hot swap a dual fan unit, you must have the following:
Sufficient length in all cords and cables so you can slide the device forward in
the rack far enough to fully access the dual fan units on the side panel
the rack far enough to fully access the dual fan units on the side panel
The ability to externally support the GQAM with a cart or table or with the
assistance of another person
assistance of another person
Note: If you do not have sufficient length in all cords and cables, you will have to
disconnect all cords and cables and completely remove the GQAM from the rack
to replace a dual fan unit that has failed.
disconnect all cords and cables and completely remove the GQAM from the rack
to replace a dual fan unit that has failed.
Read this instruction sheet to learn how to replace a dual fan unit on the GQAM.
When Can I Perform This Procedure?
If you cannot hot swap the dual fan unit, you need to replace the fan unit during a
maintenance window. This is necessary because you will have to power off and
disconnect the GQAM to replace the fan unit, thereby temporarily disrupting all
broadcast services configured and provisioned on this GQAM.
maintenance window. This is necessary because you will have to power off and
disconnect the GQAM to replace the fan unit, thereby temporarily disrupting all
broadcast services configured and provisioned on this GQAM.
Important: Schedule the maintenance window to replace the fan as soon as
possible to avoid damage to the GQAM.
possible to avoid damage to the GQAM.
Audience
This instruction sheet is written for system operators of the Digital Broadband
Delivery System (DBDS), Digital Network Control System (DNCS) operators, and
Cisco
Delivery System (DBDS), Digital Network Control System (DNCS) operators, and
Cisco
®
Services engineers.
[