Figure 99: Power Supply Fan
Procedure:
1
Wear an Electrostatic Discharge (ESD) wrist strap and connect its cable to a verified good
ground.
CAUTION:
Wear the ESD strap throughout this procedure to prevent ESD damage to
any components.
2
For a trunked device, place the base radio associated with the power supply fan being replaced
in Service Mode.
a
Connect to the transceiver module Ethernet service port using CSS. See
Through an Ethernet Port Link on page 140
.
b
From the menu, select
Service
→
Test and Measurement Screen
.
c
Click
Change to Service Mode
.
d
At the confirmation screen, click
OK
.
The base radio halts activity in the current mode and switches operation to the requested
mode.
3
Set the rocker switch on the front of the power supply to Off (O).
4
Using a T20 bit, loosen the two captive screws on the front of the power supply module to
disengage them from the chassis.
WARNING:
Let the power supply module cool before performing the next step, which
exposes surfaces of the module that can be hot.
MN003286A01-E
Chapter 9: GTR 8000 Base Radio FRU Procedures
241