Print Head Slant Adjustment (Cr) - Epson 3800 - Stylus Pro Color Inkjet Printer Service Manual

EPSON Stylus Pro 3800/3800C/3850

5.3.4 Print Head Slant Adjustment (CR)

† Purpose
Check the print head for slanting in the CR direction and corrects if slanted.
† Paper Used
„
Size: A4/Letter
„
Type: Economy Super Fine Paper
† Procedure
1. Remove the HOUSING, UPPER.
When removing the HOUSING, UPPER, do not remove the LOCK,
COVER, ASSY. Keep the ink cover closed and turn the ink cover
open sensor ON.
2. Remove the COVER, CR.
3. Attach the OPERATION, PANEL, ASSY to the printer and connect the FFC
cable.
4. Turn the printer ON.
5. Start up the Adjustment Program and select [Print Head Slant Adjustment
(CR)].
6. Select [Visual pattern] and click [Print] to print the adjustment pattern.
7. Examine the printout patterns with its print start side facing downward. Use
the calibrated magnifying glass to check the point as shown in
See Figure 5-21 and Figure 5-22
z OK Pattern:
Click [Next] 3 times, and click [Run] on the screen shown in
The carriage unit will return to its home position. Click [Finish] to finish
the adjustment.
z NG Pattern:
Click [Next] and start adjustment on the next screen
o to
Step 8
ADJUSTMENT
Figure
for judging each nozzle row.
Figure
Standard Adjustment
<Nozzle Row>
A B
<Adjustment Pattern>
<Check Point>
NG
OK
5-20.
NG
5-28.
Combination 1
Divide the interval between the lines printed
by one nozzle row into quarters. If the line
printed by the other nozzle appear within the
two central quarters (the yellow-shaded area),
adjustments are not needed.
C D E F
Combination 3 Combination 2
1/4
NG
1/4
OK
1/4
NG
1/4
Combination 2, 3
Divide the interval between the lines printed
by one nozzle row into thirds. If the line
printed by the other nozzle appear within the
central third (the yellow-shaded area),
adjustments are not needed.
Figure 5-20. Adjustment Pattern
Revision A
G H
Combination 1
Paper
Feed
1/3
1/3
1/3
CR_Slant_Pattern_01
207