Sperry Marine 4914-CA, Руководство по эксплуатации, установке и обслуживанию

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1. Check and note the shaft encoder correction angle and alignment
error correction values. Double check whether the shaft encoder cor-
rection angle and alignment error correction values are correctly
noted in the setup tables.
2. Switch off the compasses main and backup power supplies and take
all the necessary precautions to make sure that the compasses main
and backup power supplies remain switched off during any removal
and installation procedures.
3. Unscrew the 5 mm hex-head screws of the compass housing door
and take off the door from the housing.
4. Disconnect the grounding strap between door and housing. Place
the door aside. If the door is put next to the housing, the CDU cable
may be left connected to the master PCB.
7. Put both hands around the container and lift it up, so that the cou-
pling tongues disengage from their seats in the bayonet.
1. Illustrations show the Mod. 10/3 gyrosphere container. All instructions
equally apply to the Mod. 10/2 and Mod. 7/2 container.
5. Unplug the gyrosphere supply and
pick off connector from its socket
on the pick off PCB.
6. Turn the bellows, until the largest
of the three coupling seats in the
bayonet collar points towards the
front of the housing.
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The largest of the three coupling seats is marked by a green dot on the
collar.
8. While supporting the container
with both palms, put the thumbs
on the rim of the collar, pull down
on it and turn it to the left