Epson WorkForce WF-R5190

This section describes PF Timing Belt tension check.

• This printer is designed so that the tension of the PF Timing Belt falls within the expected range if you correctly reassemble the unit according to this manual. However, deformation of any related part(s) can cause improper tension of the belt. In such case, replace the Printer Mechanism (Frame Base Assy).
• The standard tension range of the PF Timing Belt is as follows:
  Standard: 5.0 ± 1.0 N

Tools

• Sonic tension gauge
• Plastic tweezers

Adjustment procedure

When performing the PF Timing Belt tension measurement, make sure of the following.

• Perform PF Timing Belt tension measurement before installing the Metal Plate Left.
• Bring the microphone of the sonic tension gauge within 5 mm from the PF Timing Belt but do not let it touch the belt.
• Flip the PF Timing Belt as weak as the sonic tension gauge can measure it.
• Be careful not to damage the PF Timing belt when flipping it with the plastic tweezers.

1. Set the following parameters to the sonic tension gauge:
   ▪ Weight: 0.96 g/m
   ▪ Width: 2.5 mm
   ▪ Span: 51 mm
2. Bring the microphone of the sonic tension gauge close to the lower center of the PF Timing Belt as shown in Figure
3. Press the “MEASURE” button of the sonic tension gauge and flip the PF Timing Belt with plastic tweezers and measure the tension of the belt.
4. Rotate the EJ Pulley a half turn in the direction of the arrow, and measure the tension of the belt. Repeat the same measurement five times (including the first one). After measuring it six times in total, check the average of the measured values falls within the standard range.