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 TM 55-1905-223-10
CAUTION
Do not operate SYNCHRONIZER KNOB (2) when repeater motor is energized.
NOTE
Repeat for all repeaters.
(17) On Open Scale Compass Repeater (FIGURE 2-121), press and hold SYNCHRONIZER KNOB (1)
to engage gear train.
(18) Rotate REPEATER CARD (2) to gyro compass heading.
(19) Release SYNCHRONIZER KNOB (1).
(20) On Gyro Compass MARK 27 MOD 1 Electronic Control Panel (FIGURE 2-119), set RPTR switch
(7) to ON position.
(21) Adjust DIMMER control (3) as required.
b. Mark 37 Mod E Transmission Un.it
WARNING
High voltage is present at fuse Fl (2, FIGURE 2-118) and Power switch S1 terminals on the
inside of the cabinet cover, even when the unit is turned OFF. THESE VOLTAGES ARE
DANGEROUS. Use extreme care when servicing or operating the unit with the front cover
open. Personal injury could result.
(1) On Mk 37 Mod E Transmission Unit (FIGURE 2-118), set POWER switch (1) to OFF position. Open
front cover and set REPEATER SWITCHES A2S1 through A2S12 (3) to OFF position. Close front
cover.
(2) Turn on gyro and allow time for gyro compass to settle.
(3) Set POWER Switch (1) to UP position.
NOTE
Compass repeaters are located above the Pilothouse Console, Starboard wing of
Pilothouse, Port wing of Pilothouse, Flying Bridge of Pilothouse, and Steering
Compartment.
(4) Set each compass repeater individually to gyro compass heading.
(5) Set each associated REPEATER SWITCH (3) to ON position when synchronized.
2-363
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