Replacing A Duplexer (700/800 Mhz) - Motorola ASTRO 25 GTR 8000 Manual

If...
Low Pass/
Harmonic Filter
module,
If you are replac-
ing the entire
tray including all
of its modules,
6 Install the tray in the rack as follows:
a Slide the tray into the appropriate location through the front of the rack.
b Using a T30 bit, secure the slide rail to the rack using the two screws removed in
c Reconnect the RF input, RF output, and ground cables.
d Reconnect the Circulator Load temperature cable at the inline connector (which connects it to
the cable leading to the RF Peripherals port on the base radio backplane).
7 Set the rocker switch on the front of the power supply to the On (I) position.
8 Place the base radio in Normal Mode, as follows:
a From the menu, select Service → Test and Measurement Screen.
b Click Change to Normal Mode.
c At the confirmation screen, click OK.
The base radio halts activity in the current mode and switches operation to the requested
mode.
9 Verify that the base radio is operating properly using fault management software, including:
• UEM
• The Transmitter Metering Screen in CSS
9.13

Replacing a Duplexer (700/800 MHz)

The following figure shows the duplexer installed on a tray.
Then...
a Label and disconnect the RF input and RF output cables from the
Low Pass/Harmonic Filter module.
b Pull up firmly to release the Low Pass Filter module from the two
semi-circular clips holding it in place.
c Insert the new Low Pass Filter module into the semi-circular clips
using the same orientation as the module you are replacing.
d Connect the RF input and RF output cables to the new Low Pass/
Harmonic Filter module.
e Go to step 6 using the existing tray.
go to step 6 using the replacement tray.
Chapter 9: GTR 8000 Base Radio FRU Procedures
MN003286A01-E
step 4 c.
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