JRC JMR-92 Series Field Service Manual page 862

Symptom
The azimuth of the Gyro
compass is not
displayed.
Alternatively, the
azimuth rotation
direction is not
displayed correctly.
Cause
The communication is not set
correctly.
The power supply for the gyro
compass is not turned on.
The connection with the gyro
compass is abnormal.
The power supply for the SLC
(CMH-2370) is not turned on.
(Case where the gyro compass is
connected to the SLC）
The SLC (CMH-2370) is faulty.
(Case where the gyro compass is
connected to the SLC）
The GIF (CMJ-554） is not set
correctly
(Case where the gyro compass is
connected to the GIF）
The fuse of the GIF (CMJ-554) has
blown.
(Case where the gyro compass is
connected to the GIF)
The GIF (CMJ-554）is faulty.
(Case where the gyro compass is
connected to the GIF)
The internal wiring is faulty.
The CCU (NDC-1590) is faulty.
7-39
Action
Set the communication correctly.
Turn on the power supply for the gyro
compass.
Check the connection with the gyro
compass.
If the gyro compass is connected to
the SLC or GIF, check that the
corresponding LED is lit during signal
reception.
Turn on the power supply for the
SLC.
Make a request to the distributor for
repair.
Set the GIF correctly according to the
gyro compass.
Replace the fuse of the GIF.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Chapter 7 Troubleshooting