Oki 4M - Manual (Page 45)

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3.3.4 Upper Cover Assy
(1) Turn off the power switch and unplug the AC cord from the AC socket.
(2) Disconnect interface cable 1 .
(3) Open top cover assy 2 and dismount EP unit 3 .
(4) Move paper guide (L) 4 and paper guide (R) 5 on the rear of the printer to the center.
(5) Remove two front claws of upper cover assy 6 and two rear screws A and lift upper cover
assy 6 .
(6) Dismount spur gear (A) 7 , guide slide (L) 8 , and guide slide (R) 9 .
(7) Dismount lamp 0 .
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