Mitsubishi Electric JT-SB116JH-G-NA Handbook page 19

(5) Power circuit board (JT-34P1H)
1 Remove the front panel. → See (3) 1 to 2.
2 Unscrew the clamping screws, and remove the circuit board (PCB)
cover for the power circuit board (JT-34P1H).
(Two PTT screws 4×16, indicated by )
3 Disconnect the lead wires from the power circuit board (JT-34P1H),
and remove the power circuit board.
Assembly precautions
• Take care not to pinch the lead wires.
• Connect the lead wires as labeled on the PCB cover for the power
circuit board.
(6) Display circuit board (JT-30S5)
1 Remove the PCB cover for the power circuit board (JT-34P1H).
→ See (5) 1 to 2.
2 Remove the display circuit board (JT-30S5) from the spacer.
Assembly precaution
After installing the circuit board, make sure that the LEDs are upright.
(7) Filter circuit board (JT-34F)
1 Remove the front panel. → See (3) 1 to 2.
2 Unscrew the clamping screw, and remove the terminal block (TB)
cover.
(One PTT screw 4×6, indicated by )
3 Unscrew the clamping screw, and remove the terminal block (TB) fix
plate.
(One PTT screw 4×16, indicated by )
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PCB cover
Power circuit board (JT-34P1H)
Display circuit board
(JT-30S5)
TB cover
TB fix plate
Spacer