Print Head Slant Adjustment (Pf) - Epson Stylus Pro 3800 Service Manual

Epson Stylus Pro 3800/3800C/3850/3880/3885/3890

5.3.3 Print Head Slant Adjustment (PF)

Purpose
Check the print head for slanting in the PF direction and corrects if slanted.
Paper Used
Size: A4/Letter
Type: Enhanced Matte Paper (US)/
Archival Matte Paper (Europe, Asia)
Procedure
1. Remove the HOUSING, UPPER.
When removing the HOUSING, UPPER, do not remove the LOCK,
C H E C K
P O I N T 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
(PF)].
6. Select [Visual pattern], and click [Print] to print the adjustment pattern.
7. Examine the printout patterns with print start side facing downward, measure
the top (A) and bottom (B) gaps between adjacent blocks using a calibrated
magnifying glass.
According to the measurement result, follow the instructions below.
A = B (Pattern2):
Click [Next] twice and then click [Run] in order to move the carriage unit
to its home position. Then, click [Finish] on the next screen to finish the
adjustment.
A > B, or A < B (Pattern 1, 3):
Click [Next], and start adjustment on the next screen
→ to
Step 8
ADJUSTMENT
8. Slightly turn the Head Slant Lever left and right to correct the slant of the print
head.
A < B (Pattern 1): Turn the Head Slant Lever counterclockwise.
A > B (Pattern 3): Turn the Head Slant Lever clockwise.
9. Click [Back] to return to the previous screen. Repeat
correct result is obtained.
<Adjustment Pattern>
<Check Point>
Pattern 1 (A<B)
A
B
Pattern 2 (A=B)
A
B
Pattern 3 (A>B)
A
B
Figure 5-15. Adjustment Pattern and Check Point
Standard Adjustment
Step 6
<Adjustment direction>
Paper
Paper ejecting
direction
Paper
Paper
Revision C
to Step 8 until the
Paper
Feed
PF_Slant_Pattern_01
224