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 TM 55-1905-219-14-11
5-117. SHIP' COURSE INDICATOR - MAINTENANCE INSTRUCTION (Continued).
S
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL-TEST
AC VOLTAGES IN 400-CPS AMPLIFIER.
Normal
Possible Trouble If Voltage
Terminals
Voltage (RMS)
Is Not Normal
A1, 10-11
115
Defective wiring to indicators and
from terminal strip in indicator
base to amplifier chassis.
A1, 1-3
38 (R6 CCW)
Defective damping rheostat R6, or
48 (R6 CW)
other components of motor damping
and phase-shift network.
T2, 6-7
2.6
Defective mixing circuit.
T2, 3-5
33.5
Defective transformer T2 or following
rectifier and amplifier circuits.
T3, 1-3
115
Defective wiring to transformer T3.
A1, 17-18
6.3
Defective dimmer control and
illumination circuit.
5-1335
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