Ricoh M281 Series Service Manual page 216

Exterior Covers (MP 501/601)
4.6.4 RIGHT LOWER COVER
1. Remove the right upper cover. (page 4-20)
2. Remove the paper feed tray [A] by pulling it out.
3. Remove the power connector cover [A].
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When removing the power connector cover, pull it in the direction of the arrow.
D255/D256/M281/M282 4-22 SM