Replacing A Duplexer (Vhf); Figure 114: Duplexer Module For Ivd (Vhf) - Motorola ASTRO 25 GTR 8000 Manual

9.15

Replacing a Duplexer (VHF)

Figure 114: Duplexer Module for IVD (VHF)

WARNING: Shock hazard. The GTR 8000 Base Radio contains dangerous voltages which can
cause electrical shock to personnel or damage to equipment. Set the power supply switches for
the affected equipment to the Off (O) position when servicing this component in the base radio.
IMPORTANT: Powering down the base radio causes any affiliated subscribers to relocate to
another channel at the site or another channel at an adjacent site. Place the base radio in
Service Mode before powering down so the system does not attribute the loss of channel to a
failure. Placing a base radio in Service Mode is performed using either the Unified Event
Manager (UEM) or Configuration/Service Software (CSS).
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 Place the base radio with the duplexer module being replaced in Service Mode, as follows:
a Connect to the transceiver module Ethernet service port using CSS. See
Through an Ethernet Port Link on page
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 the Off (O) position.
4 Remove the duplexer from the base radio as follows:
Chapter 9: GTR 8000 Base Radio FRU Procedures
140.
MN003286A01-E
Connecting
261