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RH5 8.9 Measuring Belt T ension SERVICE MANUAL 8.9 − 4 DA3SEC − 85 − 210 − A0 Micro− phone Belt Measure the center part. Belt Procedure 1. Measuring position shall be at the center of the longest part of the belt. 2. For…

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8.9 Measuring Belt Tension
SERVICE MANUAL
RH5
8.9−3
DA3SEC−85−210−A0
8.9.2 Main Drive Unit
Belt
Measure the center part.
Belt
Micro−
phone
RH5
8.9 Measuring Belt Tension
SERVICE MANUAL
8.9−4
DA3SEC−85−210−A0
Micro−
phone
Belt
Measure the center part.
Belt
Procedure
1. Measuring position shall be at the center of the longest part of the belt.
2. For details of measurement, follow the procedure described in 5.14.1.
=REFERENCE=
x If the MIC GAIN lamp (4) flashes before measuring, turn down the control volume (5)
x Do not make the belt interfere with the microphone when snapping it by finger during measuring.
x Set belt tension more than tolerance value at the assembling stage and after turning the belt by over
one turn for uniforming tension of the belt. Then make remeasurement to settle the tension value within
the tolerance value in 24 hours. (The belt under assembling stage is assured to be stretched.)
Parameter list of belt tension
Unit Type Weight Width Span Tolerance
Main drive unit
()
NM−8244A/B/C
038
(/
2
)
25
337 (mm)
19 5
(k f)
(upper)
NM−8245A/B/C
0.38 (g/cm
2
) 25
538 (mm)
19.5 (kgf)
Main drive unit
(l )
NM−8244A/B/C
038
(/
2
)
25
448 (mm)
19 5
(k f)
(lower)
NM−8245A/B/C
0.38 (g/cm
2
) 25
650 (mm)
19.5 (kgf)
8.9 Measuring Belt Tension
SERVICE MANUAL
RH5
8.9−5
DA3SEC−85−210−A0
8.9.3 Z Axis Driver
Belt
Measure the center part.