Star SP700 Series, Technical Manual

Page: 7 / 73

2. Adjusting the Belt Tension
See sections 2 and 3 for details on how to remove the
tear bar.
See sections 2 and 4 for details on how to remove the
ribbon base.
Reciprocatingly move the carriage unit [1] two or three
times to warm up the belt [2].
Move the carriage unit to the left side.
Touch the measurement probe of the tension gauge [4]
to the position [3] marked with a triangle (Δ) on the
frame to measure the tension of the timing belt.
The standard for the timing belt tension is between 0.40
and 0.44N. If the measured value is not at the standard
value, loosen the screw [6] fastening the tension plate [5]
to adjust the tension of the belt.
When the belt has been adjusted to the predetermined
tension, tighten the screw [6].
If the belt tension cannot be adjusted to the
predetermined value, replace the timing belt with a new
one and readjust it.
Refer to the first section to measure and adjust the print
head and platen gap.
Attach the tear bar, and see section 3 to adjust the paper
feed path.
Install the ribbon base.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
[ 6 ]
[ 3 ]
[ 2 ]
[ 1 ]
[ 5 ]
Fig. 2-1 Adjusting the Belt Tension
[ 4 ]
[ 2 ]
Fig. 2-2 Measuring the Belt Tension
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