Epson Stylus Pro 7400 - PF Timing Belt Tension Adjustment

EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Adjustment Mechanical Adjustment 307
5.2.5 PF Timing Belt Tension Adjustment
Whenever the PF Motor Assy. is reattached or replaced, or the PF Timing Belt is
released, this adjustment must be carried out to apply proper tension to the PF Timing
Belt with the tension gauge.
 Required Tool
Tension gauge F770
 Standard tension
2,200g ± 10% (tension in the moving direction of the PF Motor Mounting Plate)
 Procedure
1. Loosen the four screws that secure the PF Motor Mounting Plate.
2. Hitch the tip of the tension gauge to the hole on the PF Motor Mounting Plate.
3. Pull the gauge in the direction of the arrow shown in Figure 5-16 until the
standard tension is obtained. And first tighten the two of the four screws
located diametrically opposite each other.
4. Then tighten the remaining two screws.
Figure 5-16. PF Timing Belt Tension Adjustment
Tension Gauge