Brother RH-9820 Service Manual page 80

6. ASSEMBLY
E
Belt tension adjustment
Measurement position
71
Repeat steps1 to 3 to adjust the belt tension until it
is within the ranges given below.
・ When using a new belt: 80 - 90 N
・ When reusing an old belt: 60 - 70 N
1) Loosen the two screws (b) of the Y pulley
support assembly (a).
2) Use the adjustment screw (c) to adjust the belt
tension.
3) Tighten the two screws (b) of the Y pulley
support assembly (a).
* Be sure to use a belt tension gauge to measure
the belt tension, and measure at the position
shown in the illustration.
* The belt tension gauge should be set to
measure a unit weight of 0.04 kg/m, a belt width
of 10 mm and a span length of 120 mm.
RH-9820
0844B
0845B