Replacing Backup Battery - JRC JFE-380 Instruction Manual

6.4 Replacing Backup Battery

Backup battery is use for backup the menu set up item. Battery life depends on the leave time of OFF
status. About 5 years are the battery lifetime.
If the backup battery is low, "Please do connection setting of transducers." Message will pop up with
turning on. See page 37, 4.8 Master Reset.
If your JFE-380 becomes like this, please contact our agent to order replacing the battery.
Note : For the safety, turn off the main power switch of echo sounder. Then start to replace the battery.
The setting data would be kept about twenty minutes by super capacitor. So, if you finish replacing the
battery in these minutes, the setting data would not need to set again.
Outline of battery replace
1 Turn off the echo sounder. Turn off the circuit breaker. Work after waiting for about 10 seconds.
2 Remove the front cover of the echo sounder display unit.
3 Replace the battery.
4 Set the front cover of the echo sounder.
5 Turn on the circuit breaker. Turn on the echo sounder.
1 Press PWR/PANEL and BRILL for about three seconds to turn off the echo sounder. Turn off the
circuit breaker. Work after waiting for about 10 seconds.
2 Remove the front cover of the echo sounder display unit. Remove 6 screws on the front cover.
The battery is installed back side of the LCD.
Backup lithium coin cell battery
Backup battery
CR2032
6. Maintenance & Check 51