JRC JMR-92 Series Field Service Manual page 664

4.3.8.5 Replacing the Fuses of the Gyro Interface Circuit: GIF
CMJ-554
[Required Tools]
The tools shown in the following table are required for replacement work.
No. Name
1 Flat head
screwdriver
2 Phillips screwdriver
Before conducting replacement work, turn OFF the circuit breaker for the power supply of the
display unit.
Do not lose the screws as they will be needed again.
The GIF uses the gyro compass signal as its power source.
Before changing the fuses of the GIF, be sure to turn OFF the S1 switch of the GIF.
Step 1 Remove the front cover of the display unit mount kit and the lid of
the JB.
Remove the front cover of the display unit mount kit and the lid of the JB. For more information
about the removal procedure, refer to "Replacing the Fuses of the Serial LAN Interface Circuit:
SLC CMH-2370."
Table Required Tools
Size
4 mm, 6 mm
Size #2
4-443
Appearance
Chapter 4 Replacement procedure