Park Air Systems Limited B63300HS User Manual

T6T 300 Watt VHF Transmitter

Page 110

Maintenance

(3)

Connect the dc wires to the eight connector terminal block, red to terminal 1 and terminal 2 and
black to terminal 5 and terminal 6.

(4)

Connect CN4.

(5)

Taking care not to damage the plastic supply guard, lower the power supply into position and
secure from the bottom half of the unit using two countersunk screws, previously removed, for
each power supply.

(6)

Connect the drive assembly cables at CN5 and CN8. Connect the antenna cable to the
Combiner.

(7)

Re-establish the ac and/or dc supplies.

(8)

Switch power on at the amplifier using the rear mounted Supply switch.

(9)

Ensure the front panel Ready indicator is lit and the Alarm indicator is unlit.

(10) Carry out a BIT interruptive test as detailed in the procedure 

(11) Set the rear panel Supply switch to Standby. Isolate the amplifier from the ac and/or dc supplies.

(12) Refit the amplifier top and bottom covers. The amplifier can now be returned to service.

Removing and Refitting the Combiner BIT Module
The Combiner BIT module is located as shown in 

. The removal diagram is shown in 

.

Before attempting to remove the Combiner BIT module, ensure that the amplifier is isolated from the ac
and dc input supplies. Disconnect the drive assembly cables at CN5 and CN8. Disconnect the antenna
cable to the Combiner. Then proceed as follows:

(1)

Remove the amplifier top and bottom covers as described on 

.

(2)

Locate the Combiner BIT module and disconnect the following connectors:

❑

CN1 4-way connector

❑

CN2 3-way connector

❑

CN3 4-way connector

❑

CN4 3-way connector

❑

CN5 3-way connector

❑

CN6 3-way connector

❑

CN7 8-way connector

❑

CN10 3-way connector

❑

CN11 3-way connector

❑

CN12 6-way connector

❑

CN13 6-way connector