9.10.1 How To Replace The Dual Circulator/Isolator Modules
9.10.1 How To Replace The Dual Circulator/Isolator Modules
Procedure Steps
1
Wear an electrostatic discharge (ESD) 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
Set the rocker switch on the front of the power supply to the OFF (0) position.
3
Disable the base radio as follows:
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.
4
Remove the filter tray from the rack, as follows:
a. Label and disconnect the RF input, RF output, and ground cables from the tray.
b. Disconnect the Circulator Load temperature cable at the inline connector (which disconnects it from the
cable leading to the RF Peripherals port on the base radio backplane).
c. Using a T30 bit, remove the two screws which secure the tray to the rack.
d. Slide the tray out the front of the rack.
5
If...
Then...
You are replacing an individual External Dual
Circulator/Isolator module...
1.
Label and disconnect the RF input and RF
output cables from the External Dual Circulator
module.
2.
Unscrew the connector that secures the
Circulator Load to the External Dual Circulator
module.
3.
Remove the screws that secure the circulator
baseplate to the tray.
4.
Remove the circulator module including the
circulator load module that extends beyond the
baseplate.
5.
Place the new External Dual Circulator module
in the tray in the same location and orientation
as the module you are replacing.
6.
Secure the new External Dual Circulator
module baseplate to the tray using the screws
previously removed.
7.
Connect the RF input and RF output cables to
the new External Dual Circulator module.
6871022P86-A - November 2012
9-33
Summary of Contents for GTR 8000
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