5-3
Section 5 Maintenance and Inspection
5-2 Actions to be Taken When Battery Voltage Drop is Detected
The primary battery built in the main unit cannot be replaced. When a voltage drop of the battery is detected, you need to
replace the main unit.
If you conrm that the “PWR/BAT” LED of the main unit blinks alternately in red and orange, promptly replace the main unit with
a new one.
n
Main unit replacement procedure
(1) Stop the SPF system and save necessary user data (such as retain memory and user FB / system FB instance memory) in a
backup le in the personal computer with the backup function of the SX control utility of the loader.
(2) Turn OFF the power supply of the SPF system, and then replace the main unit.
(3) Turn ON the power supply of the SPF system. After stopping the main unit, download the backup le to the new main unit
with the SX control utility.
(3) Reset the main unit. Then, the main unit starts up.