Trouble Shooting Chart (Sheet 14 of 20)
Figure 4
TROUBLE, SYMPTOM
TEST, CHECK, AND/OR
AND CONDITION
PROBABLE CAUSE
REMEDY
N0. 1 LOAD CONTACTOR OPERATING CIRCUIT (CONTINUED)
2. Load contactor (K1)
A. 28.5-V DC is not
A. Check voltage at terminal Z
will close when
reaching plug interlock
on test receptacle. Voltage
control switch (20,
relay (K2) from
should be 28.5-V DC. If not,
Fig. 1) is held in
aircraft for the
voltage is not being supplied
momentary ON position.
following reasons:
from aircraft. Check
Opens immediately
causes as follows:
when switch
is released to center
(1) Generator to aircraft
(1) Inspect cable connector
ON position.
cable connector
plug thoroughly for damaged
defective
E and F terminals.
or not plugged
Be sure the plug is
into aircraft
fully mated with the
receptacle connector
aircraft receptacle connector
and making good
contact.
(2) Aircraft rejecting
(2) Check aircraft on board
power
electrical equipment and
controls
B. “Blown” fuse (F2)
B. Press the lens housing of
(1-1; 17, Fig. 8l) in
fault indicating lights. If
protective relay tray
lamps do not glow, replace
fuse (F2).
C. Defective plug-
C. Place test-bank switch (S2)
interlock relay (K2)
(34, Fig. 1) in ON position.
If load contactor will now
remain closed, replace the
plug-interlock relay (K2)
(Sect. 1-1; 1, Fig. 8) or
the complete protective
relay tray.
D. Small contacts in
D. Connect a jumper lead be-
load contactor (K1)
tween small terminal no. 1
defective
and no. 2 on the load contactor.
If load contactor
will now remain closed, replace
the complete load contactor
OM-2029
3-1
September 30/89 Revised
Page 20
Содержание 140GT17K
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Страница 87: ...Electric Governor Controller Illustration and Connection Diagram Figure 6 March 16 90 2 3 Page 13 OM 2029 ...
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Страница 128: ...Canopy Assembly Figure 2 OM 2029 4 3 September 30 89 Revised Page 4 ...
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Страница 138: ...Electric Governor Kit Figure 6 OM 2029 4 3 September 30 89 Revised Page 14 ...
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Страница 152: ...Fuel Line Assembly Figure 12 OM 2029 4 3 September 30 89 Revised Page 28 ...
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Страница 164: ...Solid State Voltage Regulator Assembly Part No 489812A Figure 15 4 3 July 27 90 Page 40 OM 2029 ...
Страница 166: ...Magnetic Amplifier Voltage Regulator Assembly Part No 281407 Figure 16 4 3 July 27 90 Page 42 OM 2029 ...
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