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TM 55-4920-412-13&P
Table 3-1. Operator's Controls (Cont)
Control, indicator or connector
Function
UNIT TESTER (Cont)
CENTRAL DISPLAY UNIT section
Seven 28 vdc lamps are used to indicate operation of warning output
signals
LOW warning indicator lamps
ROTOR SPEED
ENG 1 OUT
ENG 2 OUT
OIL 1 PRESS
OIL 2 PRESS
HIGH warning indicator lamps
OIL 1 TEMP
OIL 2 TEMP
PILOTS
Auto dim simulator control
COPILOTS
Auto dim simulator control
SDC FAIL I
Simulates SDC failure
SDC FAIL 2 switch, spring-loaded
to OFF
LOGIC P/S 1 switch
Connects logic P/S to either J1 (1) or J4 (2)
LOGIC P/S 2 switch
P/S CONT NORMAL REMOTE switch
Selects normal or remote modes
ROTOR OVERSPEED lamps
Monitors rotor overspeed latching indicators in CDU
127%
137%
142%
REDUNDANT WARN O/P switch
Wiring continuity check
SENSING indicator lamps
5 volt lamps used to verify lamp supply control loops
A
B
SIGNAL DATA CONVERTER section
TEST POINTS
1
Analog data outputs for CDU (+5V good)
2
Analog data outputs for PDU (+5V good)
3
Digital data outputs for CDU (+5Vgood)
4
Digital data outputs for PDU (+5V good)
TEST FREQ indicator lamps
ANA
Monitors analog processors
DIG
Monitors Digital processors
3-9
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