5-2 Confidential
Tightening Torque
Location of screw Screw type Q'ty Tightening torque
N•m (kgf•cm)
Grounding wire Taptite, cup S M3x6 1 0.39 ±0.1 (4 ±1)
ADF & document cover ASSY Taptite, bind B M4x12 2 0.78 ±0.1 (8 ±1)
Document guide Taptite, B M3x6 1 0.49 ±0.1 (5 ±1)
Grounding wire Taptite, cup S M3x6 1 0.59 ±0.1 (6 ±1)
ADF motor Screw, pan (s/p washer) M3x6 1 0.59 ±0.1 (6 ±1)
ADF reinforcement plate Taptite, cup B M3x10 2 0.49 ±0.1 (5 ±1)
Control panel ASSY (Scanner cover)
MFC820CW Taptite, cup B M3x10 4 0.39 ±0.1 (4 ±1)
MFC640CW/DCP340CW Taptite, cup B M3x12 3 0.59 ±0.1 (6 ±1)
Center panel ASSY* Taptite, bind B M3x8 2 0.39 ±0.1 (4 ±1)
Color LCD* Taptite, bind B M3x6 1 0.20 ±0.06 (2 ±0.6)
Upper cover
Taptite, bind B M4x12 4 0.69 ±0.1 (7 ±1)
MFC820CW Taptite, cup S M3x6 2 0.38 ±0.1 (4 ±1)
Main PCB shield Taptite, cup S M3x6 1 0.39 ±0.1 (4 ±1)
Taptite, cup B M3x8 2 0.29 ±0.1 (3 ±1)
Main PCB Taptite, cup B M3x8 3 0.29 ±0.1 (3 ±1)
Taptite, cup S M3x6 1 0.39 ±0.1 (4 ±1)
Main PCB shield frame Screw, pan (s/p washer) M3x8 1 0.39 ±0.1 (4 ±1)
MJ/PS shield box Taptite, cup S M3x6 2 0.39 ±0.1 (4 ±1)
MJ shield Screw, pan (washer) M3x8DB 1 0.39 ±0.1 (4 ±1)
MJ PCB Taptite, cup S M3x6 1 0.39 ±0.1 (4 ±1)
Power supply PCB Taptite, cup S M3x6 4 0.39 ±0.1 (4 ±1)
Maintenance unit (top) Taptite, cup B M3x8 1 0.59 ±0.1 (6 ±1)
Maintenance unit (right side) Taptite, cup S M3x6 1 0.78 ±0.1 (8 ±1)
Carriage motor Screw, bind M3x3 2 0.39 ±0.1 (4 ±1)
PF sensor PCB Screw, bind M2.6x8 1 0.49 ±0.1 (5 ±1)
Paper feed motor Screw, bind M3x3 2 0.39 ±0.1 (4 ±1)
* Provided on the MFC820CW