TB 1-4920-443-35
AEDATS II T55-GA-714A FADEC ALIGNMENT WORKSHEET
h. N1 Calibration Speed
(1) Connect Precision Signal Source (2700 Box) to J25 pins A & B (LTCT28921-02)
AEDATS 2
Analog Gauge
Digital Gage
Calculating Counter
+/- 0.2 %
(0357)
(NGG)
700 Hz (25%)
____________
____________
____________
____________
1400 Hz (50%)
____________
____________
____________
____________
2100 Hz (75%)
____________
____________
____________
____________
2800 Hz (100%)
____________
____________
____________
____________
NOTE
Leave 2800 Hz (100%) applied and proceed to T4.5
i.
T4.5 Calibration Temp. (K Type)
(1) Refer to Honeywell Technical Manual, Pub No SE-876-01-1060, Section 3-3.3A
(a) Connect Thermocouple calibrator to J19 A+ B- (LTCT28919-03)
Input
Actual
Doric
AEDATS
Analog Gauge
Digital Gauge
+/- 2 F
+/- 3 F
+/- 3 F
(T4.5)
+/- 1 F
400
____________
____________ ____________ ____________
____________
800
____________
____________ ____________ ____________
____________
1200
____________
____________ ____________ ____________
____________
1600
____________
____________ ____________ ____________
____________
1650
____________
____________ ____________ ____________
____________
2000
____________
____________ ____________ ____________
____________
Rollback Trip 1650 +/- 2 F ____________
j.
ROLLBACK SOLENOID VALVE CHECK
(1) Refer to Honeywell Technical Manual, Pub No SE-876-01-1060, Section 3-1.5
(a) Turn DC power off to the DECU at the FADEC Control Chassis, LTCT28915-03, and remove
cable LTCT28914-03 connector P3 from DECU.
(b) Connect a thermocouple calibrator, set for type "K" T/C, to cable assembly LTCT 28919-03,
connector J19-A (+Chromyl), and J19-B (-Alumel).
(c) Apply power to the torque switch assembly, LTCT31473-01.
(d) Verify that the Red LED on the front panel is illuminated.
______
OK
P1 pins A (+) to B (-). _______ Volts
(f) Set the thermocouple calibrator to 1400.
P1 pins A (+) to B (-). _______ Volts
(i) Verify that the Red LED on the front panel is not illuminated. _______ OK
(j) Using a DC voltmeter, verify that there is 28VDC at cable assembly LTCT31478-01, connector P1
pins A (+) to B (-). _______ Volts
(k) Increase the thermocouple simulator temperature to 1660.
illuminated. _______ OK
P1 pins A (+) to B (-). _______ Volts
(n) Increase the thermocouple simulator temperature to 1700.
146
