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Brother HL-4140CN Service Manual page 202

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(4) Disconnect the Flat cable (CN1) from the Panel PCB ASSY.
CN1
(5) Remove the two Pins to remove the LCD ASSY from the Panel cover ASSY.
Pin
LCD ASSY
Panel PCB ASSY
Fig. 3-55
Panel cover ASSY
Fig. 3-56
3-54
Flat cable
LCD ASSY
Pin
Confidential
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