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Brother MFC8440 Disassembly And Reassembly
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Brother MFC8440 Disassembly And Reassembly

Brother MFC8440 Disassembly And Reassembly

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Download this manual See also: Service Manual, Software User Manual
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY
3.3
Paper Tray
(1) Close the front cover and pull out the paper tray.
(2) Remove the paper from the paper tray.
(3) Remove the pad holder and the separation pad spring from the paper tray.
Fig. 4-3
Pad holder
Separation pad spring
Fig. 4-4
4-4
Front cover
1
2
Paper tray
Paper tray

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Summary of Contents for Brother MFC8440

  • Page 1 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Paper Tray (1) Close the front cover and pull out the paper tray. (2) Remove the paper from the paper tray. Front cover Paper tray Fig. 4-3 (3) Remove the pad holder and the separation pad spring from the paper tray. Pad holder Separation pad spring Paper tray...
  • Page 2 MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN SERVICE MANUAL NOTE: When replacing/re-assembling the pad holder ZL2 ASSY, remove the old grease and apply a suitable amount of grease referring to the figure below; Paper pick-up roller Grease: Molykote PG-662 Paper tray (4 mm dia.ball) Fig. 4-5 (4) Remove the four bind B M4x12 Taptite screws, and then remove the paper tray front cover.
  • Page 3 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (5) Remove the two cup B M3x10 Taptite screws, and then remove the paper tray cover. Paper tray Taptite, cup B M3x10 Paper tray cover Taptite, cup B M3x10 Fig. 4-7 (6) Remove the pressure roller holder. Pressure roller holder Paper tray Flat screwdriver...
  • Page 4 MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN SERVICE MANUAL (7) Remove the pressure roller collar. (8) Remove the pressure roller shaft. Pressure roller shaft Pressure roller collar Pressure roller holder ASSY Fig. 4-9 (9) Remove the scratch spongy holder ASSY from the pressure roller holder. (10) Remove the two scratch spongy springs.
  • Page 5 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (12) Remove the two cup M2.6x5 Taptite screws. (13) Release the lock lever, and then unhook the catches of the two side guide racks. Taptite, cup M2.6x5 Side guide L Taptite, cup M2.6x5 Side guide rack Catches Lock lever Paper tray...
  • Page 6 MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN SERVICE MANUAL (15) Unhook the two catches (A) of the pressure plate while pulling the plastic frame outwards, then unhook the other two catches (B) of the plate while pulling the plastic frame outwards to remove the pressure plate ASSY. Catches (A) Pressure plate ASSY Paper tray...
  • Page 7 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY NOTE: When re-assembling the pressure plate ASSY, ensure that the paper indicator arm is under the pressure plate. CAUTION: When unhooking the catches to remove the pressure plate, do not bend the pressure plate, gently ease the plastic cover. If the pressure plate is deformed, paper feeding problems may occur.
  • Page 8 MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN SERVICE MANUAL (19) Remove the cup B M3x8 Taptite screw, and then remove the side guide gear and the friction spring. (20) Remove the two side guide racks. Taptite, cup B M3x8 Side guide gear Side guide rack Friction spring Side guide rack Fig.
  • Page 9 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY NOTE: • When re-assembling the side guide racks, they should both be aligned so that the wide end of the racks are in line with the inside edge of the paper guide release slots in the tray before refitting the spring and gear.
  • Page 10 MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN SERVICE MANUAL (24) Remove the paper rear guide. Paper tray Paper rear guide Fig. 4-20 4-13...