Epson Stylus PHOTO RX640 Service Manual page 74

EPSON Stylus PHOTO RX640/650
Adjustment procedure
Specified PG value: 1.2 ± 0.1 mm
1. Install the ink cartridges in the carriage.
2. Remove the Cable Holder Frame.
3. Check that the APG Assy and the carriage are in the PG-position.
4. Move the carriage to the middle area of the platen, and place 1.1 mm thickness
gauges at the left and right ends of the platen. (Fig. 5-2)
5. Pull the Timing Belt to move the carriage to the left end.
6. If the carriage comes in contact with the gauge, adjust the Left Parallelism Bush to
raise the carriage to a position where the Printhead does not come in contact with
gauge.
7. Pull the Timing Belt to move the carriage to the right end.
8. If the carriage comes in contact with the gauge, adjust the Right Parallelism Bush
to raise the carriage to a position where the Printhead does not come in contact
with gauge.
9. 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.
10. Pull the Timing Belt to move the carriage to the left end.
11. If the carriage does not come in contact with the gauge, make the adjustment
again.
12. Pull the Timing Belt to move the carriage to the right end.
13. If the carriage does not come in contact with the gauge, make the adjustment
again.
14. 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)
C A U T I O N
The Printhead must come in contact with the 1.3 mm thickness
gauges but must not come in contact with the 1.1 mm thickness
gauges.
Adjustment
(Fig. 4-65)
(Fig. 5-1)
Gauge (1.1 or 1.3mm)
Figure 5-2. PG Adjustment 1
~Left side~
CR
Guide
Shaft
UP
CR
Guide
Shaft
DOWN
Figure 5-3. PG Adjustment 2
Overview
Revision B
Revision B
Pull the belt to move the carriage
~Right side~
CR Guide Shaft
Guide
Shaft
CR Guide Shaft UP
DOWN
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CR