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1. Power up the compass system.
–
In case of a first-time installation where the basic configuration
has not been carried out yet, alarms will be given at this point.
Alarms caused by missing input data or an incomplete system
configuration may be safely acknowledged to continue with the
power-up function test.
The 1
Ω
gyro current test resis-
tor (R103) is located at the left
side of the master PCB close
beneath the J4 connector and
TB8.
A startup screen is shown and a system
test sequence is executed.
When the system test has been passed,
the compass enters normal operational
mode. The display shows the heading
data from the available compasses and
the heading difference alarm threshold.
R103
SPERRY MARINE
NAVIGAT X MK 1
>F1 GYRO 1 271.2
°
F2 GYRO 2 271.4
°
F3 MAGN.C. 270.9
°
DIFF G1/G2 5
°
ü
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Risk of defective gyrosphere caused by “GYRO FAILURE”
Should a “GYRO FAILURE” alarm occur during power-up, the compass
is not working properly.
De-energize the system and visually check the connections to the gyro-
sphere, the follow-up step motor and the shaft encoder.
If the failure reoccurs when the compass is powered-up again, the instal-
lation has not been carried out correctly or the gyrosphere is defective
and must be replaced.
Содержание 4914-CA
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