Brother HL-4140CN Service Manual page 196

(4) Remove the Front cover release button spring from the Front cover release button.
Front cover release button spring
Assembling Note:
When assembling the Front cover release button spring, assemble "A" and "B" as shown in
the figure.
"B"
Front cover release
button spring
Front cover release button
Fig. 3-44
"A"
Fig. 3-45
3-48
Front cover release button
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