EPSON Stylus Color 400 Service Manual
Rev. A
4-2
4.2 Adjustment
This section explains specific procedures for each adjustment required for Stylus Color 400.
4.2.1 Parallel Adjustment
When exchanging carriage assembly and or removing it along with disassembly of printer mechanism,
perform parallel adjustment when assembling and set the standard distance from the surface of the print
head to the paper surface.
CAUTION
Do not scar the special coated surface of the PF roller assembly(platen) and lib surface of the
front paper guide ;B.
Be careful not to leave any scars or dirt on the surface of the print head.
(Never use the rusty or dirty thickness gage. Also, do not push hard the thickness gage to the
head.)
[Right Parallelism Adjustment]
1. Install the “parallelism adjustment bush” for right and left frame and set them on the peaking of the
upper frame side so that they match with “the standard mark of parallelism adjustment bush”.
2. Set the PG lever front. (Gap is small.)
3. Move the carriage to the center and set the thickness gage on the fixed position of front paper
guide ;B as you can see in the figure 4-1 on the next page
4. Move the carriage to the position that the print head overlaps the thickness gage.
WORK POINT
Put the thickness gage on the flat side of the lib of the front paper guide ;B.
When you move the carriage, move it, pulling the timing belt with your hand.
5. Move the right parallelism adjustment to the rear direction until the thickness gage moves with the
carriage when you move the carriage 20mm back and forth in right and left direction.
(Gap will be narrowed.)
6. From the state of the thickness gage moves with carriage movement, move the gear for locating the
position of the right parallelism adjustment bush one serration toward you.(Gap will be widen.
7. In the state that PG lever is set front(gap is small) and rear side respectively, move the carriage
right and left and make sure that the thickness gage does not move at this time.
[Left Parallelism Adjustment]
8. Perform above procedures from 2 to 7 for left parallelism adjustment bush.
[Checking parallelism]
9. Perform procedures from1 to 4 again.
10. Make sure that the thickness gage does not move along with carriage movement when the carriage
is moved 20mm back and forth.
11. In the state that the right parallelism adjustment bush is moved one serration toward rear(Gap will be
narrowed),make sure that the thickness gage moves along with carriage movement.
If the thickness gage does not move, perform procedures from 1 again.
12. Move the right parallelism adjustment bush one serration toward you(Gap will be widen).
[Fixing Parallelism Adjustment Bush]
13. Fix the right and left parallelism adjustment bushes by screws.(No.1 screw each for right and left.)
When completing this adjustment, check the overlap amount of print head and head cleaner.
1. Rotate the gear 67.2 and move the head cleaner to the print rear side.
2. Move the carriage next to the head cleaner and make sure that overlap between the tip of the print
head and cleaner head is more than 0.5mm.
3. After that, rotate the gear 67.2 and return the head cleaner to the front position.
Summary of Contents for Stylus Color 400
Page 5: ...REVISION SHEET Revision Issued Data Contents Rev A February18 1997 First issue ...
Page 126: ...Chapter 6 Maintenance Rev A 6 5 No 1 No 2 10mm 2mm 2mm No 3 No 11 GEAR 34 ...
Page 138: ...EPSON Stylus Color400 Service Manual Rev A A 9 Figure A 3 C206 PSB Board Component Layout ...
Page 139: ...Appendix Rev A A 10 Figure A 4 C206 PSE Board Component Layout ...
Page 140: ...EPSON Stylus Color400 Service Manual Rev A A 11 Figure A 5 C206 PNL Component Layout ...
Page 141: ...Appendix Rev A A 12 A 5 Exploded Diagrams Figure A 6 Stylus Color 400 Exploded Diagram 1 ...
Page 143: ...Appendix Rev A A 14 Figure A 8 Stylus Color 400 Exploded Diagram 3 ...
Page 145: ...EPSON SEIKO EPSON CORPORATION ...
