GTR 8000 Base Radio
9.5.1 How To Replace a Power Supply Fan
Procedure Steps
1
Wear an electrostatic discharge (ESD) wrist strap and connect its cable to a verified good ground. This strap
must be worn throughout this procedure to prevent ESD damage to any components.
2
Disable the base radio that is using the power supply fan being replaced, so the system does not attribute
the loss of channel to a failure.
a. Connect to the device modules Ethernet service port using Configuration/Service Software (CSS). See
Connecting Through an Ethernet Port Link, page 4-11
b. Select
Service → Test Measurement Screen
from the menu.
c. Click
Change to Service Mode
.
Step result:
The base radio is disabled.
3
Set the rocker switch on the front of the power supply to Off (0).
4
Using a T20 bit, loosen the two captive screws on the front of the power supply module, so that they disengage
from the chassis.
It is recommended that you let the power supply module cool before performing the following step,
which exposes surfaces of the module that can be extremely hot.
5
Pull on the metal handle to disengage the power supply from the backplane, and remove it completely from
the chassis.
6
Remove the fan cover from the power supply module
a. Using a T15 bit, remove the 4 screws that connect the cover to the sides of the power supply module.
b. Slide the cover off (tilting the top edge out and lifting the bottom edge above the power supply handle).
7
Disconnect the power cable located above the fan.
8
Remove the two screws that secure the fan to the power supply.
9
Remove the fan and insert the new fan.
10
Secure the fan to the power supply with the two screws.
11
Attach the power cable for the fan to the connection on the power supply.
9-16
6871022P86-A - November 2012
Summary of Contents for GTR 8000
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