SATO TG308, Service Manual

Page: 182 / 252

Section 6: Checks and Adjustment Procedures
Page 6-44
TG3 Series Service Manual
6.20 ADJUSTING CUTTER MOTOR TIMING BELT TENSION
Required tool:
Phillips head screwdriver, and tension gauge 2.20 pounds (1kg)
1.
Switch off the printer and disconnect power supply cord.
2.
Lift up the Main cover, unscrew the shaft that holds the cutter unit in place, removed the shaft and set
aside. Carefully lift and pull out the cutter unit.
3.
Remove the front cutter cover by unfasten the three screws on the top and two screw on the sides.
4.
Place the tension gauge on the timing belt nearly in the middle of motor pulley shaft and guide roller.
5.
Push the tension gauge against the belt and measure the belt tension when the belt gets deflected 0.04 in
(1mm).
6.
Loosen the two set screws of cutter motor, and move the motor up or down to adjust the belt tension.
7.
Ensure the reading of tension gauge is within 3.53 ounces to 5,29 ounces (100g to 150g) and tighten the
two set screws of the motor.
8.
If the timing belt tension cannot be adjusted by the procedure above, replace the cutter motor timing belt
based on the
Section 7.23 Replacing Cutter Unit
of this manual.
Loosen the set screw of motor. Move the motor up and down to adjust the belt tension.
Tension gauge
Measure the belt tension
when pushing the belt 1mm
Tension gauge
Belt position before deflection