MTR3000 Radio Frequency Distribution System (RFDS) Equipment: Basic Troubleshooting 9-11
a. Unscrew the connector that secures the Circulator Load to the External Dual Circulator
module.
b. Remove the Circulator Load module.
c. Place the new Circulator Load module on the tray in the same position and orientation as the
module which will be 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 station/repeater
backplane interface board.
6. IF an individual Low Pass/Harmonic Filter module is replaced, perform the steps below.
Otherwise, proceed to Step 7.
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 which will be replaced.
d. Connect the RF input and RF output cables to the new Low Pass/Harmonic Filter module.
7. IF the entire tray including all of its modules are replaced, install the replacement tray in the
rack.
8. Turn on the DC breaker, and/or connect the AC source power cord to the back of the base
station/repeater.
9. Verify that the base station/repeater is operating properly using Customer Programming
Software (CPS).
Note
Skip step 5(e) for the UHF band.
Shock Hazard. The MTR3000 Base Station/Repeater contains
voltages which can cause damage to the base station/repeater or other
equipment if a short circuit occurred. Turn off the DC breaker, and/or
pull the AC source power cord from the back of the base station/
repeater when servicing this component in the base station/repeater.
Note
The functionality of RF Peripherals port (temperature monitoring) is not supported.