TM 11-5820-489-10
TO 31R4-2GRA6-31
3-4. REMOVAL AND REPLACEMENT
a. Neon Lamps (Remote Control C-433/GRC).
Release the two snap catches holding the outer case to the panel and
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chassis assembly.
Remove unit from case.
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Pull the lampholder to the rear, out of the receptacle.
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Push and turn lamp counterclockwise. Pull the defective lamp
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out of the holder.
Push a replacement lamp into the lampholder, turn
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clockwise and make sure it is properly seated.
Replace the lampholder in the receptacle.
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Replace unit in case.
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b. Neon Lamps (Local Control C-434/GRC).
Loosen the thumbscrew fasteners on the front panel of unit, and
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remove the panel and chassis assembly from the case.
Pull the lampholder to the rear out of the receptacle.
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Push and turn lamp counterclockwise. Pull the defective
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lamp out of the holder.
It may be necessary to remove the BA-30 batteries to remove/replace
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lamp.
Push a replacement lamp into the lampholder and turn
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clockwise and make sure it is properly seated.
Replace the lampholder in the receptacle.
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Replace unit in case.
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c. Batteries (Remote Control C-433/GRC).
Release the two snap catches holding the outer case to the panel
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and chassis assembly. Remove the assembly from the case.
Slide the battery compartment cover back to clear the tabs on one
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side. Remove the cover.
Remove the two batteries (BA-30) from the battery compartment.
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Unplug the battery cable from the socket on the end of the large
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battery (BA-414/U). Remove the large battery from the battery
compartment.
Replace two fresh batteries (BA-30) in the battery compartment
(alternate polarities).
Replace large battery (BA-414/U) in battery compartment and insert
battery cable into socket at end of the battery. The socket at the end
of the battery should be facing outward, toward the rear of the Unit.
Replace the battery compartment cover by first inserting the tabs on
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one side of the cover under the bracket angles on the side of the
chassis frame. Then, slide the cover forward and press to lock it into
place.
Replace Unit in case and secure the two snap catches.
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