JRC JMR-92 Series Field Service Manual page 776

2. Supplying the power and activating the maintenance tool
Check that Display Unit, Sensor LAN Unit, and SLC are all turned on. For Display Unit, check also
that the breaker of NBD-913 is turned ON.
Update can be performed from any Display units as long as they are connected to SLC through
the network.
(1) Turn on the power of Display Unit by using the PWR switch of the trackball operation unit. The
Task selection screen will be displayed.
CAUTION!!
Whenever you begin update the SLC firmware, make sure that the other Display Unit on the
network does not run the Task applications (RADAR, ECDIS...etc.). Other Display Units must be
set Task select Screen during the updating.
5-33 Section 5 Software Update