Mitsubishi MR-J4-10A Instruction Manual page 433

12. ABSOLUTE POSITION DETECTION SYSTEM
(b) Replacement procedure of the battery in the MR-BAT6V1SET
When the MR-BAT6V1SET battery reaches the end of its life, replace the MR-BAT6V1 battery in the
MR-BAT6V1SET.
Cover
MR-BAT6V1
While pressing the locking part, open the cover.
Locking part
Replace the battery with a new MR-BAT6V1 battery.
Press the cover until it is fixed with the projection of the
locking part to close the cover.
Projection
12 - 8