Yamaha RCX142, User Manual

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3-
16
Installation
3
10. Replacing the absolute battery
The absolute battery will wear down and must be replaced as needed. For example, replace the bat-
tery when its service life has expired or when problems with backing up data occur even when the
battery charge time was long enough.
Though battery wear depends on the number of charges and the ambient temperature, the battery
should generally be replaced one and a half years after being connected to the controller.
Always charge the new battery after it is installed.
The battery is automatically charged when power is supplied to the controller. Keep power supplied for
a time longer than necessary for charging by referring to the table below.
Battery type
3.6V / 2000mAh
(KS4-M53G0-100)
Battery name
*1)
B3
Connection method
Standard connection
Parallel connection
Hours until full charge
*2)
48h
Backup time
*3)
680h
1360h
*1) YAMAHA exclusive battery name.
*2) Time at ambient temperature of 20
°
C.
*3) Time after power is off with the absolute battery fully charged.
Replacing the absolute battery
When the RGU-2 is mounted, remove the four screws on the top and bottom with a Phillips
screwdriver and remove the RGU-2.
For B3 batteries
1) Remove the tie strap (cable tie) that secures the battery cords.
2) Unplug the connector for the absolute battery to be replaced and then remove the
absolute battery by pulling it up and out.
Fig. 3-10-1
2
1
3) Insert the new battery slowly into the battery holder.
After inserting, check that the battery is securely installed in position by the holder.
Fig. 3-10-2
2
1
4) Bundle the absolute battery cords together with a cable tie.
c
CAUTION
Use caution to prevent fingers or
wiring cords from being pinched
when inserting the absolute battery
into the battery holder.
c
CAUTION
• This absolute battery replacement
guide changes according to the
ambient temperature, etc., but is
approximately one and a half
years.
• Contact YAMAHA when the
battery specifications differ.
• When disposing of used absolute
batteries, refer to the instructions
in "Precautions for disposal".