Adjust the distance between the head surface and the Paper
Guide Front Assy (platen) properly and adjust the parallelism on the 0th column
side and on the 80th columns side to ensure reliable print quality. Once the Carriage Assy and/or Adjustment
Bushes have been removed or whenever necessary for
any other reason, make this adjustment to correct the deviation of the platen
gap.
Tools to be used
- Thickness gauge: 1.15 mm (x2) 1.3 mm (x2)
- Phillips screwdriver.
- The thickness gauge to be used must be free from dust and dirt and from deformation. Be sure to clean it before use. ! Take care that the Print Head is not soiled or scratched. To ensure high accuracy of adjustment, install new ink cartridges in the carriage, and move the carriage right and left by pulling the belt without holding the carriage.
- Make this adjustment after installing the mechanism unit in the Housing Lower. (Install the Linear Scale after adjustment.)
- With EPSON Stylus Photo R280/R285/R290, four stages of PG setting are available by means of the APG Mechanism. However, make this adjustment with the mechanism in the minimum PG position (PG-: 1.2 mm).
PG POSITIONS
PG POSITION AT PG ADJUSTMENT
CLICK ON PICTURES TO ZOOM
Adjustment procedure (Specified PG value: 1.2 ± 0.1 mm)
- Install new ink cartridges in the carriage.
- Remove the Cable Holder Frame.
- Check that the APG Assy and the carriage are in the PG-position.
- Move the carriage to the centre of the platen, and place 1.15 mm thickness gauge on the left aligning its left edge with the second rib of the Front Paper Guide. And place another 1.15 mm thickness gauge on the right aligning its right edge with the rightmost rib of the Front Paper Guide.
- Pull the Timing Belt to move the carriage to the left end.
- If the carriage comes in contact with the gauge, adjust the Left Parallelism Bush to raise the carriage to a position where the Print head does not come in contact with gauge.
- Pull the Timing Belt to move the carriage to the right end.
- If the carriage comes in contact with the gauge, adjust the Right Parallelism Bush to raise the carriage to a position where the Print head does not come in contact with gauge.
- Move the carriage to the middle area of the platen, and place 1.3 mm thickness gauges at the left and right ends of the platen.
- Pull the Timing Belt to move the carriage to the left end.
- If the carriage does not come in contact with the gauge, make the adjustment again.
- Pull the Timing Belt to move the carriage to the right end.
- If the carriage does not come in contact with the gauge, make the adjustment again.
- Mark the indicated graduation position of the right and left Parallelism Bush, and tighten the screws.(Screw tightening torque: 0.8±0.1 N•m)
PG ADJUSTMENT-2
