NORTHROP GRUMMAN Sperry Marine NAVIGAT X MK 2, Руководство по сборке

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056341 Rev. AA NAVIGAT X Mk 2
Page 4-10 4: Preventive Maintenance
3) De-energize the system and safeguard the main and backup power sup-
plies against accidental switching-on.
4) Unscrew the 5 mm Allen-head screws of
the compass housing door and take off
the door from the housing.
5) Disconnect the grounding strap be-
tween door and housing. Place the door
aside. If the door is put next to the hous-
ing, the keypad's ribbon cable may be
left connected to the main PCB.
6) Remove the old flash-memory, IC 35,
from its socket on the main PCB.
7) Insert the new flash-memory into the
socket.
8) Put the door in front of the housing and
connect the grounding strap.
9) Fit the door on the housing and fasten
the retaining screws.
10) Energize the system.
11) Verify that the system powers up correctly (alarms resulting from improper
configuration settings may be safely acknowledged at this point).
12) Re-enter the recorded parameter settings in the Manual Settings, Service
Setup 1, the Technical Pages and the magnetic compass calibration table.
13) If the nav. data printer NAVIPRINT is used, enter the current date and time
in the User Setup.