CE-1008
TABLE 4-2. TROUBLE ANALYSIS CHART (CONT)
Step
No.
Procedure
Normal Indication
Corrective Step
16
Run the elevation into an electrical
Servo action becomes sluggish
a) Check setting of the elevation
limit.
approximately 3before
limit switches.
contacting a mechanical stop.
b) Check the elevation limit
resistor.
17
With the TRUE AZIMUTH
The antenna will not move;
Check the light bulb.
counter set at zero and SCAN
the AZIMUTH MODE SCAN
CONTROL SECTOR and SCAN
indicator light will illuminate.
CONTROL GAIN controls fully
counterclockwise, set the
MODE SELECT switch, S2, to
the SCAN position.
18
Rotate the SCAN CONTROL
The TRUE AZIMUTH counter
a) Check the scan generator
GAIN control to increase the
on the Control Indicator
card.
rate of the sector scanned.
will begin to slowly sector
b) Check the azimuth servo amplifier
scan back and forth about
in the Control Indicator.
zero. The antenna will
c) Check the 6.3 -volts AC scan
follow.
reference voltage.
d) Check the position of the cam
on S8 in the gear train in the
Control Indicator.
e) Check the +24 volts on sector
scan potentiometer.
4-9
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