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Brother HL-4140CN Service Manual page 268

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(7) Disconnect the wiring of the T1 paper edge sensor PCB ASSY.
(8) Release the three Hooks to remove the T1 paper edge sensor PCB ASSY from the PF
ASSY.
T1 paper edge sensor PCB ASSY
PF ASSY
Hook
Fig. 3-164
Harness routing: Refer to
"
PF ASSY"
3-120
Confidential
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