Epson 3880 - Stylus Pro Color Inkjet Printer, Service Manual, Page: 226 / 306

Epson Stylus Pro 3800/3800C/3850/3880/3885/3890 Revision C
ADJUSTMENT Standard Adjustment 226
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.
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 Figure 5-20 .
See Figure 5-21 and Figure 5-22 for judging each nozzle row.
z OK Pattern:
Click [Next] 3 times, and click [Run] on the screen shown in
Figure 5-28 .
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
→
to Step 8
Figure 5-20. Adjustment Pattern
C H E C K
P O I N T
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.
CR_Slant_Pattern_01
A B C D E F G H
Paper
Feed
1/4
1/4
OK
NG
NG
1/4
1/4
1/3
1/3
1/3
OK
NG
NG
Combination 1 Combination 2 Combination 3
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.
<Nozzle Row>
<Check Point>
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.
<Adjustment Pattern>