Adjustment System; Transmitter Adjustment Procedure - GE MLSH041 Maintenance Manual

5.2.3 Adjustment System

5.2.4 Transmitter Adjustment Procedure

LBI-38438A
ALIGNMENT AND TROUBLESHOOTING PROCEDURES
STEP ITEM
1 Initial
Setting
2 Confirming
the voltage
3 Setting
APC off
power
4 Confirming
minimum
power
5 Confirming
APC on
power
TEST TUNING
POINT CONTROL
TP4
RV1
RV2
RV1
RV1
PROCEDURE
Turn the volume on APC RV1,
RV2 fully counterclockwise
(CCW).
Disconnect RF cable P101 from
connector J201.
Turn on the power.
Turn on the PTT (ground J701-2).
Confirm voltage of TR8 collector
is 9V at TP4 and that the relay K1
clicks at this time.
Connect RF cable P101 to J201.
Turn the control RV1 on APC
fully clockwise (CW).
Next, turn the volume RV2 slowly
CW and set an output of 70W
±2W at the highest frequency of
each band.
Turn the volume RV1 on APC
fully CCW and confirm minimum
power of 30W or less.
Turn volume RV1 on APC slowly
CW and set an output of 64W
±2W at the highest frequency of
each band. 60W or more for other
frequencies.
17