Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 541

[Appendix 2] Introduction to Renewal Tool
1.2.2 MR-J2S-_B_ renewal tool
[Before replacement]
MR-J2S servo amplifier and
Servo motor for MR-J2S
[After replacement]
<Primary replacement>
<Secondary replacement>
<Simultaneous replacement> When replacing the servo amplifier and
Appendix 2-4
When replacing the servo amplifier only
Servo motor for MR-J2S
When replacing the servo motor after
replacing the servo amplifier
the servo motor simultaneously
Servo motor for MR-J4