Furuno gp-31 Manuel D’Utilisation

6. After the equipment has checked the

items  shown  in  Figure  8-4,  a  beep
sounds and the message PUSH KEY
appears at the top right-hand corner.

7. Press each key one by one. The name

of the key pressed momentarily appears
at the top right-hand corner if the key is
functioning properly.

Note: If no key is pressed within approx.
five seconds, the equipment automati-
cally proceeds to step 8.

8. The equipment displays the following

message to inform you that it is now go-
ing to check the LCD:

9. The LCD is checked as shown in the

message in Figure 8-5. Then, the test
repeats. To stop the test, turn off the
power.

A lithium battery (type: TZ6580553A, code
no.: 000-139-951) is installed on the circuit
board inside the display unit, and it pre-
serves data when the power is turned off.
The life of the battery is about 3-5 years.
When  its  voltage  is  low  “BATTERY
ALARM!” appears on the display to alert
you. When this happens, do the following
to prevent loss of data, and contact your
dealer to request replacement of the bat-
tery.

1. Press the [MENU] key once or twice to

open the menu.

2 Select SYS SETUP and press the [ENT]

key.

3. Select “EXCHANGE BATTERY?” and

press the [ENT] key. The display shows
the following:

4. Press the [ENT] key. Then, the follow-

ing display appears.

5. Press any key to automatically turn off

the unit.

Then, important items in the RAM area are
transferred to a temporary area in the flash
memory to prevent loss of data.

Note  :  When  it  is  expected  that  the
GP-31/36 will not be used for a long time,
execute  the  above  procedure  before
turning the power off,to prevent loss of data.