Safety Precautions; Tightning Torque Lists - Brother TD-4000 Service Manual

CHAPTER III DISASSEMBLY AND REASSEMBLY

3.1 SAFETY PRECAUTIONS

(1) The disassembly or reassembly work should be carried on a grounded antistatic
sheet. Otherwise, the LSIs and electronic parts may be damaged due to the
electricity charged in your body.
(2) When transporting PCBs, be sure to wrap them in conductive sheets such as
aluminum foil.
(3) When using soldering irons and other heat-generating tools, take care not to
damage the resin parts such as wires, PCBs, and covers.
(4) Be careful not to lose small parts such as screws, washers, or other parts
removed for parts replacement.
(5) Tighten screws according to the torque listed below.
(6) Lubricate according to the lubrication points list.

3.2 TIGHTNING TORQUE LISTS

Location
Side panel L
Side panel R
Lower plate ASSY
Upper cover
Insert guide
Heat sink DC8V
DC power PCB ASSY
Power supply ASSY
Ground spring plate
FG harness ASSY
Main PCB ASSY
Front cover
Panel cover
Front side cover
Cutter unit ASSY
Mecha ASSY
SB PCB ASSY
Cover sensor arm R
SB PCB sheet
LED guide
Chassis R sub ASSY
Chassis L sub ASSY
Head ASSY
Tape feed motor ASSY
FG harness ASSY
Screw type
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Screw, bind M2.6 x 4
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M3 x 8
Screw, bind M2.6 x 4
Screw, bind M2.6 x 4
Screw, bind M3 x 4
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Screw, bind M2.6 x 4
Screw, bind M2.6 x 4
Screw, bind M3 x 3
Screw, bind M3 x 4
III - 1
Q'ty Tightening torque (N•cm)
2 0.343 ± 0.049
2 0.343 ± 0.049
4 0.343 ± 0.049
3 0.343 ± 0.049
2 0.392 ± 0.098
1 0.343 ± 0.049
1 0.343 ± 0.049
2 0.343 ± 0.049
4 0.343 ± 0.049
2 0.55 ± 0.049
1 0.392 ± 0.098
1 0.392 ± 0.098
2 0.588 ± 0.098
2 0.343 ± 0.049
2 0.343 ± 0.049
1 0.343 ± 0.049
2 0.392 ± 0.098
2 0.392 ± 0.098
2 0.588 ± 0.098
2 0.588 ± 0.098