Motorola ASTRO 25 GTR 8000 Manual page 256

MN003286A01-E
Chapter 9: GTR 8000 Base Radio FRU Procedures
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 the Off (O) position.
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 Perform one of the following actions:
If...
If you are replac-
ing an individual
External Dual
Circulator/Isola-
tor module,
If you are replac-
ing an individual
Circulator Load,
If you are replac-
ing an individual
256
Then...
perform the following actions:
a Label and disconnect the RF input and RF output cables from the
External Dual Circulator module.
b Unscrew the connector that secures the Circulator Load to the Ex-
ternal Dual Circulator module.
c Remove the screws that secure the circulator baseplate to the tray.
d Remove the circulator module including the circulator load module
that extends beyond the baseplate.
e Place the new External Dual Circulator module in the tray in the
same location and orientation as the module you are replacing.
f Secure the new External Dual Circulator module baseplate to the
tray using the screws previously removed.
g Connect the RF input and RF output cables to the new External
Dual Circulator module.
h Connect the Circulator Load to the External Dual Circulator mod-
ule.
i Go to step 6 using the existing tray.
perform the following actions:
a Unscrew the connector that secures the Circulator Load to the Ex-
ternal Dual Circulator module.
b Remove the Circulator Load module.
c Place the new Circulator Load module on the tray in the same posi-
tion and orientation as the module you removed.
d Secure the new Circulator Load to the External Dual Circulator
module by tightening the connector.
e Connect the Circulator load cable to the RF Peripherals port on the
base radio backplane.
f Go to step 6 using the existing tray.
perform the following actions: