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Page Title: Table 3-1. Controls, Indicators, and Connectors - Continued
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ARMY TM 5-6675-309-14
MARINE CORPS TM 08840A-14/1
Table 3-1. Controls, Indicators, and Connectors - Continued
Function
Control, indicator, or connector
Used to test power supply overvoltage protection circuitry.
OVERVOLT
The OVERVOLT mode is activated by INITIATE
switch
Selects power supply to be tested
FUNCTION switch
Switch Position
Ps
PS + inverter drive circuitry
+INV
DR
PS + 17V circuitry
+17V
PS +28V power supply
+28V
PS -28V power supply
-28V
PS 115 VAC 0 phase power supply
115V
PS 115 VAC 90 phase power supply
115V
COMP PS
PS ambient heating or cooling power supply
AMB PWR
COMP PS +5 VDC power supply
+5V
COMP PS +15 VDC memory power supply
+15V MEM
COMP PS CDU lamp power supply
V LAMP
COMP PS precision + 15V power supply
+15V PREC
COMP PS precision -15V power supply
-15V PREC
Provides -5, -1, 0, +1, and +8V reference voltages for
REFERENCE AMB TEMP switch
the PS ambient heater and cooler power supply and
COMP PS CDU lamp power supply
Puts PSTS in self-test mode. Used in conjunction with
SELF TEST switch
MODE and FUNCTION switches
Switch Position
PSTS not in self-test mode
OFF
LOAD-OVERLOAD
Allows measurement of load resistors at POWER SUPPLY
or COMP PWR SPLY test points
Allows measurement of overvoltage supply voltages at
OVERVOLT
SELF-TEST test points.
Allows measurement of the 2-second and 1-minute timer
TIMERS
signals
Allows checking of switches
SWITCHES
Displays cumulative powered time of PSTS
TIME HOURS meter
INITIATE switch
When pressed, causes the selected OVERLOAD MODE or
OVERVOLT MODE to be activated. Activates for 2
seconds
INPUT POWER UUT circuit breaker
Controls unit-under-test (UUT) input power
INPUT POWER PSTS circuit breaker
Controls PSTS input power
3-4

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