How To Replace The Fuses; How To Replace The Batteries - Furuno FCR-2107 Operator's Manual

22. Maintenance and Troubleshooting
22.3

How to Replace the Fuses

The fuse in the radar processor unit, display unit and chart processor units protects those units from overcurrent and
internal fault. If the power cannot be turned on, check if a fuse has blown. If it has blown, find out the cause before
replacing the fuse. If it blows again after replacement, contact your dealer for advice.
Unit
Radar Processor Unit
Radar Processor Unit RPU-016
Display Unit
Display Unit MU-190
Display Unit MU-201CR
Display Unit MU-231CR
Display Unit MU-231
Chart Processor Unit
Chart Processor Unit EC-1000C
22.4

How to Replace the Batteries

Radar processor unit
The GC (Gyro Converter) Board in the radar processor unit carries a battery that backs up data. The life of the
battery is about five years. When the battery has expired, the self test results for the battery shows "NG". When this
happens have a qualified technician replace the battery.
Battery type
CR 1/2 8.1 000-103-769
Chart processor unit
The CPU Board (PCI-5S-RS-R40 or OP0100) in the chart processor unit contains a lithium battery that preserves
data when the power is turned off. When the voltage of the battery is low the time is wrong, all default settings are
restored, etc. When this occurs, have the battery replaced by a qualified technician, at your earliest convenience.
CPU board type*
PCI-5S-RS-R40
OP0100
* Type depends on unit production
22-4
Power supply
24 VDC
100-115 VAC
220-230 VAC
100-230 VAC
100-230 VAC
24 VDC
100-230 VAC
24 VDC
100-230 VAC
100-230 VAC
Code no.
Battery type
CR2032 000-159-662-10
CR2450
Fuse to use
20A
10A
5A
1A
2A
5A
2A
6A
1.5A
5A
Code no.