Head Angular Adjustment - Epson Stylus CX7300 Service Manual

EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200 series/SX200 series/Stylus CX8300/CX8400/DX8400/NX400/TX400 series/SX400 series Revision C

5.2.3 Head Angular Adjustment

Two patterns are printed as shown below.
Band pattern
The following pattern is printed. The lines below "1 to 80" are printed while the
carriage moves from the home to the other side, and lines below "80 to 1" are printed
while the carriage returns to the home.
-3
-2
-1
0
Figure 5-3. Head Angular Adjustment Printout Pattern (1)
How to Judge
Examine the printout patterns and enter the value (-3 to 3) for the most straight lines.
Additional information
When "3" or "-3" is the most straight lines, it indicates that the Printhead is not
installed correctly. Reassemble the Printhead and carry out this adjustment again.
Example for judgement
C H E C K
P O I N T
ADJUSTMENT
NG OK
Using the Adjustment Program
Microweave Pattern
NG +2 +1
Figure 5-4. Head angular adjustment Pattern Printing (2)
How to Judge
Examine the printout patterns (+2 to -2) and select the value for the group of which the
gaps between the 2 color bars are the smallest.
Additional information
If no appropriate pattern is found, reassemble/replace the Printhead.
When "+2" or "-2" is the group of which the gaps between the 2 color bars are the
smallest, reassemble/replace the Printhead.
Example for judgement
C H E C K
P O I N T
OK
0 -1 -2 NG
Gap
NG
Confidential
147