Epson Stylus COLOR 900 Service Manual page 154

EPSON Stylus COLOR 900/900N
5. Set the blue platen gap lever to the rear to raise the carriage and
widen the platen gap.
6. Move the carriage to the left and place the thickness gauge (see
"Special Adjustment Tools"
of the platen (front paper guide).
Figure 5-50. Placement of the Thickness Gauge
7. By pulling on the timing belt, move the carriage over the thickness
gauge.
C A U T I O N Do not move the carriage by pushing it directly. Doing
so presses down on the carriage and prevents you
from performing the adjustment correctly.
8. Move the PG lever forward to lower the carriage.
9. By pulling on the timing belt, slide the carriage back and forth to see
if it makes contact with the thickness gauge.
on page 121) on top of the right end
10. If the printhead does not touch or drag the thickness gauge,
decrease the platen gap by moving the right parallelism adjustment
bushing lever upward by one notch. Note that the carriage moves
opposite the direction you move the lever, as shown in the figure
below:
Figure 5-51. PG Adjustment
11. Repeat the steps 5 through 10 until the printhead touches or drags
the thickness gauge.
12. Move the PG lever to the rear and then slide the carriage over to the
left, away from the thickness gauge.
13. Increase the platen gap by rotating the right parallelism adjustment
bushing down from the current position by one notch.
14. By pulling on the timing belt, move the carriage once again over the
thickness gauge. Slide the carriage back and forth to make sure the
thickness gauge does not move.
Chapter 5 Adjustments
151