Mitsubishi Electric JT-SB216JSH2-W-NE Handbook page 19

(5) Power circuit board (JT-30P8H)
1 Unscrew the clamping screws, and remove the circuit board (PCB)
cover.
(Two PTT screws 4×16, indicated by )
2 Disconnect the lead wires from the power circuit board (JT-30P8H),
and remove the power circuit board.
Assembly precautions
• Take care not to pinch the lead wires.
• Connect the lead wires as printed on the power circuit board.
(6) Filter circuit board (JT-30F8)
1 Unscrew the clamping screw, and remove the terminal block (TB)
cover.
(One PTT screw 4×6, indicated by )
2 Unscrew the clamping screw, and take out the PCB box.
(One PTT screw 4×16, indicated by )
3 Unscrew the clamping screw, and remove the cover.
(One PTT screw 4×6, indicated by )
Assembly precaution
Install the cover over the PCB box.
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PCB cover
Power circuit board
(JT-30P8H)
TB cover
PCB box
Cover