Epson Stylus Color 400 Service Manual 4
Chapter 4
Adjustment
4.1 Overview................................................................................................................4-1
4.1.1 Required Adjustments ........................................................................................................... 4-1
4.1.2 Required Adjustment Tools................................................................................................... 4-1
4.2 Adjustment............................................................................................................4-2
4.2.1 Parallel Adjustment................................................................................................................4-2
4.2.2 Adjustment by Adjustment Program .................................................................................... 4-4
4.2.2.1 Specification of Adjustment Program........................................................................ 4-4
4.2.2.2 Initial Ink Charge Operation....................................................................................... 4-5
4.2.2.3 VH Voltage Writing Operation ................................................................................... 4-6
4.2.2.4 Print Head Angle Adjustment .................................................................................... 4-7
4.2.2.5 Bi-D Adjustment ........................................................................................................ 4-9
Chapter4 Adjustment
4.1 Overview
This section describes adjustments required when the printer is disassembled and assembled after repair.
4.1.1 Required Adjustments
Stylus Color 400 has following required adjustments.(Refer to table 4-1) Refer to figures for the actual
procedure and perform appropriate adjustment for each exchanged unit.
Table 4-1. Required Adjustment and Contents
No. Adjustment Item Conditions
1 Parallel Adjustment • When you exchange or remove the Carriage guide shaft.
• When you move the parallelism adjustment bush.
2 Initial ink charge • When you exchange or remove the print head.
3 VH voltage Writing Operation • When you exchange or remove the print head.
• When you exchange the C206 main board.
Note)
The values of address are not lost by EEPROM reset
operation.
4 Printing Head Angle Adjustment • When you exchange or remove the print head.
• When you move the head adjustment lever.
5 Bi-D adjustment • When you exchange or remove the print head.
• When you exchange the C206 main board.
Table 4-2. Operation and Adjustment Item
No. Content of Operation Adjustment Procedure
1 Exchange or Removal of Print head 1)Perform Vh voltage writing operation.
(Only when the print head is exchanged)
2)Perform initial ink charge.
3)Perform print head angle adjustment.
4)Perform Bi- d Adjustment.
2 Exchange of C206 Main Board 1)Perform Vh voltage writing operation.
2)Perform Bi-d adjustment.
3 Exchange or Removal of Carriage Unit 1)Perform parallel adjustment.
2)Perform print head angle adjustment.
3)Perform Bi-d adjustment.
4 Exchange of CR Motor 1)Perform Bi-d adjustment.
5 Exchange of Printer Mechanism 1)Perform Vh voltage writing operation.
2)Perform initial ink charge.
3)Perform Bi-d adjustment.
4.1.2 Required Adjustment Tools
The table4-3 below shows adjustment tools for Stylus Color 400.
Table 4-3. Adjustment Tools for Stylus Color 400
No. Name Adjustment item Content/Specification
1 Thickness Gage Parallel Adjustment Thickness=1.1mm(1.04mm)
2 Adjustment Program Each Mechanism Settings Exclusive Program(“J80C10E”)
Rev. A
CAUTION
Never use the bent (curved or tilted)or rusty thickness gage.
Erase any dirt, grease or obstacles on the thickness gage before you use it.
4-1
EPSON Stylus Color 400 Service Manual
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.
4-
Rev. A
Chapter4 Adjustment
3
Left Side
Lib;Avoid 2 libs from left edge
PF Roller Assembly
Figure 4-1. Setting of the Gage at Parallel Adjustment
Front Paper Guide;B
Carriage
Thickness Gage
Front Paper Guide;B
Standard Position Mark
Lib; Avoid 2 libs from right edge
Put the thickness gage flat
on the flat side of lib.
Also, match the center of
the thickness gage and
flat side of the lib.
Right Side
(0)
PG Lever
Front
(Gap will be widened)
(+)
Figure 4-2. Parallel Adjustment
Rear
(Gap will be narrowed)
Frame
Parallelism Adjustment Bush
Overlap amount
= More than 0.5mm
Print Head Side
Cleaner Head
Figure 4-3. Overlap of Head Surface and Cleaner Brade
Rev. A
4-
Loading...