Table 7-1.
Resistance Test (50/60 Hz)
P1
Potentiometer
Nominal
Allowance resistance
Connection
Position
Resistance
range (ohms)
3400-6800
T-N (T +)
5100
2180
1950-2400
M-N (M +)
(M +)
R18CCW
12180
11000-13000
6000
5000-7000
F-N (F +)
(F+)
R16CCW
31000
30000-32000
(F+)
Rl5CCW
6500
5500-7500
E-G (E +)
5500
4500-6500
120
100-140
R-G (R+)
650
550-750
F-G (F +)
J-H (J +)
LESS THAN 0.2 OHMS
T-P (T +)
2200
1400-3000
(T+)
R14CCW
2600
1800-3400
U-S (U+ )
525
450-600
USING M1, MEASURE RESISTANCE OF EACH PIN (ALL CONNECTORS) AND
EACH TEST POINT TO GOVERNOR CONTAINER. RESISTANCE SHOULD BE
INFINITY ON 100,000 OHM SCALE REPEAT FOR REVERSE POLARITY
RESISTANCE SHOULD BE INFINITY ON 100,000 OHM SCALE.
MAGNETIC AMPLIFIER BIAS TEST
TURN R1l, R12, R14, R15, R16, R18
FULL CW.
CONNECT GOVERNOR CONTROL UNIT TO
TEST EQUIPMENT AS SHOWN.
ALMOST R11 AND Rl2 FOR BALANCED
READING OF 450 MA ON M2 AND M3.
TURN R12 FULL CW. M2 AND M3 SHALL
READ 0-300 MA, AND BE BALANCED
WITHIN 50 MA.
TURN R12 FULL CCW. M2 AND M3 SHALL
READ 600-1000 MA, AND BE BALANCED
WITHIN 50 MA.
READJUST Rll AND Rl2 FOR BALANCED
READING OF 450 MA ON M2 AND M3.
LOCK Rll AND Rl2 FOR REMAINDER OF
TEST.
ME 6115-545-34/7-3
Figure 7-3.
Electric Governor Control Unit, Magnetic Amplifier
Bias Test (50/60 Hz)
Change 1 7-5
