Epson Stylus Pro 9000 - Print Engine, Service Manual, Page: 132 / 198

EPSON Stylus Pro 9000
Adjustments 132
CARRIAGE BELT TENSION ADJUSTMENT
Perform this adjustment whenever you remove or loosen the CR Motor or
CR Belt.
1. Make sure the Carriage is in home position.
2. Apply the tip of the tension gauge to the underside of the CR Belt in the
middle of the printer. While stabilizing the belt with your free hand, push the
gauge far enough up so that the belt presses firmly against the underside
of the Carriage Guide Rail. You can also place a piece of double-backed
tape on the belt while making the measurement to help hold the tip of the
gauge in place.
3. Carefully lower the gauge just until the belt loses contact with the
underside of the Carriage Guide Rail. The belt tension is correct if the
gauge reads 3.5 oz (100 g) ± 10%.
4. If the belt’s tension is not correct, adjust the tensioning screws on the
CR Drive Belt Pulley located on the left side of the printer. See
Figure 4-29
on page 75. Then recheck the tension.
PF BELT TENSION ADJUSTMENT
Perform this adjustment whenever you remove or loosen the PF Motor or
PF Belt.
1. Loosen the four screws securing the PF Motor assembly to the printer.
2. Hook the tension gauge in the PF Motor Mounting Bracket, and pull it away
from the bracket as shown below. If the ink tubes are in the way, you can
remove the pipe holder and let the ink tubes hang freely.
3. The adjustment is correct when the gauge reads 7.7 lb (3500 g) ± 10%.
Retighten the screws to complete the adjustment.
CR Drive
Belt Pulley
Carriage Assembly
CR
Motor
2) Test the tension
in the center.
1) Move to
capping position
3) Verify tension
is 100g ± 10%
You may need to remove the
pipe holder and let the ink
tubes hang freely.