Epson Stylus Photo 870 Service Manual page 76

EPSON Stylus Photo 870/1270
3. Remove the screws fixing the position of the right and left
parallelism adjustment bushings, and then set the bushings to the
center mark.
Forward
(widens the gap)
(0)
Paper Thickness
Lever
Figure 5-1. Right Parallelism Adjustment Bushing
4. Place the thickness gauge (1.14 mm) on the right end of the
platen. Position it next to the cutout.
Left End
Cutout
Carriage
PF Roller Platen
Figure 5-2. Positioning the Thickness Gauge
Toward rear
(narrows the gap)
Center Mark
(+)
Frame
Parallelism
Adjustment Bushing
Right End (Home
Platen
Position Side)
Cutout
Thickness
Gauge
Set the gauge flat on the ribs.
Center it with the ribs.
5. Move the paper thickness lever to the rear (+) position, and then
slide the carriage over the thickness gauge.
6. Bring the paper thickness lever to the front (0) position.
7. If the printhead doesn't touch the gauge, decrease the platen gap
by moving the right parallelism bushing to the rear until it touches.
(The thickness gauge should move when you slide the carriage a
little to the left or right.) Then set the bushing forward by one
notch. (The thickness gauge should no longer move.)
If the printhead touches the gauge, increase the platen gap by
moving the bushing forward until it no longer touches. Then set
the bushing back by one notch.
8. Set the paper thickness lever to the rear (+) position.
9. Remove the thickness gauge and set it on the left end of the
platen, as shown in Figure 5-2.
10. Slide the carriage over the gauge.
11. Bring the paper thickness lever to the front (0) position, and then
perform the adjustment on the left bushing the same way as you
did for the right.
12. After completing the adjustment on the left bushing, perform the
adjustment once more on the right bushing to confirm the
adjustment.
13. When the platen gap is the same at both ends of the printer,
tighten the screws that hold the bushings in place.
Chapter 5 Adjustments
71