C 3, TM 11-6625-1683-15
Function
Control or indicator
Action
Position
Connects output of TEST control potentiometer to pin Y of
ON
TEST ON/OFF switch ___________
connector 1000 (beneath hinged cover on test panel marked
AZ DRIVE) to apply up to 6 volts to energize drive
motor.
OFF
Disconnects output of TEST control potentiometer from pin
Y of connector 1000.
When turned cw from fully ccw position, applies up to 6 volts to TEST
TEST control potentiometer --------
switch.
3-18. Block 1000 (Antenna Drive Unit Test) Connectors and Indicators
Control or Indicator
Function
Provide connections to pins K and H of block 1000 connector for measure-
SWP test jacks ____________________
ment of dc output voltages from block 1000 scan drive unit to B-scope
display circuits (to control azimuth position of B-scope trace).
Provides connection for testing block 1000 scan drive unit circuits.
Connector 1000 (32-pin, beneath
hinged cover marked AZ DRIVE).
Provides connection for testing drive motor B1OO1.
Connector (two-pin, beneath hinged
cover marked AZ DRIVE).
319. Block 2400 (Azimuth Servoamplifier Test) Controls and Indicators
Function
Control or indicator
ON
Connects pin B of block 2400 connector to +12 volts and pin
ON/OFF switch ------------------------
C to -- 12 volts to energize block 2400 amplifier.
Provide connections to pins D, P, R, and S of block 2400 connector for
400 CPS test jacks (white and black,
observation of 400-Hz outputs from block 2400 amplifier to servomotor
on lower right of test panel).
in block 2800 azimuth counter assembly.
Provides connection for CX-10436/PPS-5.
Connector 2400 (20-pin) ___________
3-20. Block 2800 (Azimuth Counter Assembly Test) Connection
The only connection of block 2800 is 14-pin connector 2800 which provides connection for
t h e CX-10436/PPS-5.
3-21. CRT TEST Block Controls and Indicators
Function
Control or indicator
When pressed down and held: connects pin 13 of larger CRT connector to
CRT TEST switch -----------------
+2 kv and pin 12, 14, 9, 7, 11, and 10 to 2 kv for testing A- or
B-scope.
Applies up to + 300 volts to pins E and F of smaller CRT connector for
DEFL control potentiometer ______
adjusting position of spot on A- or B-scope under test.
Larger (15-pin) : provides connection for 15-pin plug on CX-10443/PPS-5.
CRT test connectors ---------------
Smaller (seven-pin) : provides connection for seven-pin plug on CX-
10443/PPS-5.
3-10
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