Brother PT-2420PC Service Manual page 18

CHAPTER III
Safety Precautions
(1) You should carry out disassembly & reassembly jobs on an anti-static sheet
correctly. Otherwise, the LSI and other electronic devices will be damaged due to
the electricity charged in your body.
When transporting PCBs, be sure to wrap them in conductive sheets such as
(2)
aluminum foil.
When using soldering irons and other heat-generating tools, take care not to
(3)
damage the resin parts such as wires, PCBs, and covers.
Be careful not to lose screws, washers, or other parts removed for parts
(4)
replacement.
Tighten screws to the torque values listed below.
(5)
Tightening Torque List
Location
Middle cover
Chassis sub ASSY
DC motor
Cutter ASSY
Head ASSY
Sub PCB ASSY
Main PCB
Ground wire
DISASSEMBLY & REASSEMBLY PROCEDURE
Screw type
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 6
Screw, pan M1.7x2.5
Taptite, cup S M3x5
Screw, bind M3x4
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 8
Taptite, bind B M2.6 x 6
Q'ty Tightening torque
5 0.39 ±0.10 N•m (4 ±1 kgf•cm)
2 0.39 ±0.10 N•m (4 ±1 kgf•cm)
2 0.15 ±0.05 N•m (1.5 ±0.5 kgf•cm)
1 0.59 ±0.10 N•m (6 ±1 kgf•cm)
1 0.59 ±0.10 N•m (6 ±1 kgf•cm)
1 0.39 ±0.10 N•m (4 ±1 kgf•cm)
1 0.39 ±0.10 N•m (4 ±1 kgf•cm)
1 0.39 ±0.10 N•m (4 ±1 kgf•cm)
III-1
grounded