TM 11-5840-217-34-1
3-5.
LOW-VOLTAGE POWER SUPPLY CHECKS
CONDITIONS
CIRCUIT
KEY POINTS
PAGE
Blank A-scope; antenna will not move in
AC distribution
a. T1802, 1-2
azimuth or elevation; X, Y, and RANGE
b. F1805
counters do not move; and no audio.
Blank A-scope, antenna will not move in
+258 rectifier
a. TP1801-H
azimuth or elevation.
b. V1807
c. T1802, 8-9-
10
Antenna will not move in azimuth or
+258 regulator
a. TP1801-F
elevation.
b. V1808
c. TP1801-H
Blank A-scope, no audio.
-108 power supply
a. TP1801-D
(PS)
b. V1810
c. CR1806
d. CR1805
Blank A-scope; X, Y, and RANGE
+250 power supply
a. TP1801-G
counters do not move.
b. V1801
c. V1806
d. T180Z, 3-5-7
Blank A-scope, no audio.
+150 power supply
a. TP1801-E
b. V1805
RADIATE light does not come on,
-27 power supply
a. TP1801-A
transmitter will not fire.
b. F1806
c. CR1803
d. T1801 11-
12
No audio, no AGC action on A-scope.
-6. 3 power supply
a. TP1801-C to
B
No video.
b. CR1801
c. T1801-8-9-
10
d. V621
23
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