JRC JMR-92 Series Field Service Manual page 665

Step 2 Turn OFF the S1 switch of the GIF.
Turn OFF the S1 switch in the lower part of the GIF. Signals from the gyro compass are blocked.
Step 3 Change the fuses.
Open the fuse holders and change the fuses. Each of the fuse holders can be opened by slowly
turning the holder head counterclockwise while pushing it down. The fuses are glass tube fuses.
After replacing the fuses, assemble to the original condition by repeating the same procedure in
the reverse order. Please make sure to tighten all the screws and set all the switches back in
place.
If any of the fuse holders cannot be opened because it is too tight, push a 6 mm tip width flat
head screwdriver against the groove on the fuse holder head and rotate it slowly
counterclockwise.
When closing the fuse holders, do not use a flat head screwdriver, however.
Using a flat head screwdriver may lead to damage to the fuse holders.
Name Unit Name
Glass Fuse NQE-1143
Chapter 4 Replacement procedure
OFF
Location
Q'ty
of Use
CMJ-554 4 250V 0.5A
4-444
GIF S1
Use Model Name (Code)
MF51NR250V0.5A
(5ZFGD00019)