IAI America XSEL-KE - Manual (Page 61)

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Part 1 Installation
[Battery replacement method]
1) Disconnect all cables from the controller.
In the case of an absolute specification, remove the absolute-data backup battery.
2) Remove the screws shown by arrows that
are mounting the front panel. (1/2-axis
controllers have four screws, while 3/4-axis
controllers have six screws.)
3) Remove the front panel.
4) Remove the screws mounting the segment
board.
Segment board
Main board