GE MLSH041, Руководство по обслуживанию

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ALIGNMENT AND TROUBLESHOOTING PROCEDURES
LBI-38438A 17
5.2.3 Adjustment System
5.2.4 Transmitter Adjustment Procedure
STEP ITEM
TEST
POINT
TUNING
CONTROL PROCEDURE
1 Initial
Setting
Turn the volume on APC RV1,
RV2 fully counterclockwise
(CCW).
2 Confirming
the voltage
TP4
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.
3 Setting
APC off
power
RV1
RV2
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.
4 Confirming
minimum
power
RV1 Turn the volume RV1 on APC
fully CCW and confirm minimum
power of 30W or less.
5 Confirming
APC on
power
RV1 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.