Oki 4M - Manual (Page 57)

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3.3.13 Pulse Motor (Main)
(1) Dismount the upper cover assy. (See Section 3.3.4.)
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)
(3) Dismount side plate M. (See Section 3.3.8.)
(4) Dismount the base frame. (See Section 3.3.12.)
(5) Remove two screws 1 and dismount pulse motor (main) 2 .
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