Epson Stylus C87, Service Manual

Page: 86 / 109

EPSON Stylus C87/C88/D88 Revision A
ADJUSTMENT Adjustment by Using Adjustment Program 86
5.2.4 Head Angular Adjustment
[Adjustment Procedure]
1. Select Head Angular adjustment in the adjustment program.
2. Click the [Print] button to print Head Angular adjustment pattern of checked
items.
3. Select the pattern value of straight line in the printed lines.
4. Click the [Input] button to write the adjustment value of checked items.
(Note: The range of the adjustment value is -4 to 4.)
[Treatment procedure for NG product]
Step1) Replace the print head with new one again.
Step2) Print the check pattern, and check the adjustment result.
Step3) If the result is NG level, confirm the installation condition of removed parts
during disassembly.
Step4) Perform step2) again.
Figure 5-1. Head Angular Printing Pattern
5.2.5 Bi-D Adjustment
[Adjustment Procedure]
1. Select Bi-D adjustment in the adjustment program.
2. Click the [Print] button to print Bi-D adjustment pattern of checked items.
3. Select the pattern that has the smallest displacements in each variable dot, and
click the [Go to print page] button in the adjustment program.
4. Click the [Input] button to write the adjustment value of checked items.
5. Click [Go to print page].
[Treatment procedure for NG product]
Step1) Replace the print head with new one again.
Step2) Print the check pattern, and check the adjustment result.
Step3) If the result is NG level, confirm the installation condition of removed parts
during disassembly.
Step4) Perform step2) again.
Figure 5-2. Bi-D Adjustment Pattern
OK pattern
NG pattern
[Judging Standard]
- The printed line should be straight line.
[Reference:Standard value in manufactory]
- Standard :
± 50
µ
m
C A U T I O N
Please perform Bi-d adjustment keeping all “Housing” attached.
[Judging Standard]
- No gap/overlap between short block
pattern and long one.
[Reference:Standard value in manufactory]
- VSD1:60
µ
m, VSD2:60
µ
m, VSD3:
40
µ
m, VSD4:40
µ
m, ECO:85
µ
m.
OK pattern NG pattern