TM 11-6625-2709-40
Troubleshooting
Chart
-
Continued
2-8.
Probable trouble
Proper
for improper
Procedure
Correction
Step
indication
indication
indicator test set
to RW2. Adjust
91
METER
course index
(Cont)
reads zero.
on course indi-
cator around
30 degrees for
zero reading
on indicator
test set SYN-
CHRO METER.
d. Indicator test set
d. Rotate course
d. Same as step a above.
d. Same as step a above.
index on course
METER
indicater coun-
deflects to the
terclockwise.
left.
Connect test set
J4 to J3 to
Broken part or connection.
Check for defective parts
92
Bearing
J5
J6
pendant cable
Defective transformer T2
or connections.
plugs P2 and P3
or T3.
300
V1
0
to the cable fabri-
max
cated per in-
structions in par-
330
0.86 0.5
agraph 4-4 (fig.
(V1
(V2
4-3).
max) max)
0.86
0
0.5
Set test set con-
(V2
(V1
trols as follows:
max)
max)
BRG-OBS:
BRG
0
V2
30
max
BEARING:
300
60
0.5
0.86
MODE: 400 HZ
(V1
(V2
max)
max)
Measure the ac
90
0.86 0.5
voltage from J1
(V1
(V2
to J2 on the fabri-
max) max)
cated cable. This
V1
0
120
voltage is V1 max.
max
Set test set
BEARING switch
150
0.86 0.5
to 30.
(V1
(V2
max) max)
Measure the ac
0.86
voltage from J3
180
0.5
to J4 on the fabri-
(V1
(V2
max)
max)
cated cable. This
voltage is V2 max.
210
0
V2
max
Measure the ac
voltage from J1
240
0.5
0.86
to J2 and J3 to J4
(V1
(V2
for each setting
max)
max)
of the test set
BEARING switch.
270
0.86 0.5
(V1
(V2
max) max)
(10% tolerance is
allowed on above
readings.)
Change 1
2-25
