Yokogawa PC-Based MX100 - Manual (Page 170)

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SM MX100-01E
10. The Module back plate comes free.
Module back plate
11. Remove the 2 screws from the left and right sides.
12. The assembly separates into the PWM CTRL board and the PWM Power board.
PWM CTRL board PWM pwer board
7.6 Disassembling the MX120 Medium-Speed Analog Output Module and the Medium-Speed PWM Output Module