Furuno GP-3500 - Manual (Page 160)

10. RECORDING & PLAYING BACK DATA
10-10
10.3.2 Backup to internal memory
1. Press the [MENU] key to show the main menu.
2. Press the [3] key to show the MEMORY CARD OPERATIONS & DATA
TRANSFER menu.
3. Press the [6] key to show the AUTO BACKUP menu.
4. Rotate the [ENTER] knob to select AUTO BACKUP TO INT. MEMORY.
5. Press the [1] key to select “1. YES.”
You can select it by pressing the [1] key.
6. Rotate the [ENTER] knob to select SELECT BLOCK OF INT. MEMORY.
7. Press the [1] or [2] key to select the memory block where to save backup
data.
8. Press the [MENU] key several times to close the menu.
Whenever turning the power on, data is stored in the block selected at step 7.
Then, whenever you turn on the power, data is saved to the “BACKUP” file in the
memory card. If a memory card is not inserted, an error message appears.
Note: When this setting is done, the backup starts automatically after the caution
screen at the power on. The message “NOW DOING AUTO BACKUP.
WAIT FOR A WHILE.” appears while the backup.