Epson Stylus Color 640 Service Manual page 133

EPSON Stylus Color 440/640/740
[Fixing Parallelism Adjustment Bushing]
13. Fix the right and left parallelism adjustment bushings with screws.
(No.1 screw for each.)
When completing this adjustment, check the overlap amount of the
printhead and head cleaner.
1. Rotate the gear 67.2 and move the head cleaner to the printer rear
side.
2. Move the carriage next to the head cleaner and make sure that
overlap between the tip of the printhead and cleaner head is more
than 0.5 mm.
3. Then, rotate the gear 67.2 and return the head cleaner to the front
position.
"PAPER GUIDE, FRONT;B"
Left
Rib: Avoid 2ribs from left
Carriage
Assembly
"ROLLER, ASSEMBLY, PF"
"PAPER GUIDE, FRONT;B"
Figure 5-1. Setting of the Gauge at Parallelism Adjustment
Chapter 5 Adjustment
Right
(HP side)
[Thickness Gauge] Rib: Avoid 1 rib at right end
*Put the gauge on a flat face
*Align the center of gauge and
the ribs
Figure 5-2. Parallelism Adjustment
CR
Printhead
(Nose face)
Figure 5-3. Overlap of Head Surface and Cleaner Blade
Revision A
Overlap = 0.5mm or more
"CLEANER, HEAD"
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