Mitsubishi Electric MELSERVO-J3 Series Manual page 462

Part 7: Review on Replacement of Optional Peripheral Equipment
c) Assembly of the case
After all MR-BAT6V1 batteries are mounted, fit the cover and insert screws into the two holes
and tighten them. Tightening torque is 0.71 N•m.
d) Precautions for removal of battery
The connector attached to the MR-BAT6V1 battery has the lock release lever. When removing
the connector, pull out the connector while pressing the lock release lever.
3) Battery cable removal
CAUTION
POINT
When assembling the case, be careful not to get the lead wires caught in the
fitting parts or the screwing parts.
Threads
Pulling out the connector of the MR-BT6V1CBL and the MR-BT6V2CBL without
the lock release lever pressed may damage the CN4 connector of the servo
amplifier or the connector of the MR-BT6V1CBL or MR-BT6V2CBL.
While pressing the lock release
lever, pull out the connector.
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Battery cable