Futaba 4GRS - Manual (Page 124)

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Warning Displays
Low Battery Alarm
If the transmitter battery voltage drops to 4.1V(when us-
ing Futaba rechargeable type battery: 4.9V) or less, an
audible alarm will sound and "BATTERY LOW VOLT-
AGE" will be displayed on the LCD screen.
LCD screen:
Audible alarm:
Continuous tone.
Warning
When a low battery alarm is generated, cease operation immediately and retrieve the
model.
If the battery goes dead while in operation, you will lose control.
Power supply and low battery alarm
The T4GRS can use an optional rechargeable battery. However, the battery alarm setting
is different from that of the dry cell battery (alkaline battery recommended). Therefore,
always set the battery type to match the power source used. Always set the battery type
to "N5/L2" especially when using a Futaba rechargeable type battery. If the set is used
at "DRY4" setting, the time from low battery alarm to system stopping will become ex-
tremely short.
Backup Error
If the data is lost for an unknown reason, an audible
alarm will sound and "MEMORY BACK UP ERROR"
will be displayed on the LCD screen.
LCD screen:
Audible alarm:
Tone will sound (9 times), then repeat.
Warning
When a backup error is generated, immediately stop using the system and request
repair from the Futaba Service Center.
If you continue to use the system, the transmitter may malfunction and cause loss of control