Laser Unit - Brother hl 1650 - B/W Laser Printer Service Manual

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3.11

Laser Unit

(1) Loosen the cup S tite 3x6 screw to release the fan relay PCB ASSY and the harness on
the fan relay PCB ASSY from the main unit.
(2) Remove the three cup S M3x16 Taptite screws.
(3) Push the P harness cover to the right to release it from the hook and remove the P
harness cover.
(4) Disconnect the LD harness and the polygon motor connector.
(5) Taking care not to touch the lens and mirror, remove the laser unit.
Laser unit
Polygon motor
connector
Main unit
LD harness
(hook)
Screw, cup S tite 3x6
Fig. 4-46
P harness cover
Fig. 4-47
4-26
Fan relay PCB ASSY
Taptite, cup S M3x16
Polygon motor connector