Service manual

EPSON Stylus Color 400 Service Manual
Rev. A
4-
4
4.2.2 Adjustment by Adjustment Program
In this printer, it is necessary to set correct information for each printer mechanism in order to maintain
homogeneous printing function and quality, erasing dispersion of each printer mechanism’s
characteristics.
Therefore, in case that the combination of printer mechanism and main board is changed or the print head
is exchanged by repair service, it is required to set and register correct information in the main board,
using the exclusive adjustment program.
4.2.2.1 Specification of Adjustment Program
Adjustment Program (Program name:”J80C10E”) is to set various correct values in order to prevent
development of malfunction and fluctuation of printing quality and printing function by dispersion of
components and assembly when the printer components are exchanged during the repair service.
Basic adjustment procedure by using this program are following.
Main Menu
(Item Selection)
Initial Ink Charge
Performance of Initial
ink charge process
Head VH voltage
ID writing.
Head Angle
Adjustment
Bi-D Adjustment
*Pattern printing
*Confirmation/
Mechanism
Adjustment
*Pattern printing
*Confirmation/
Input of correct
values
Input of appointed
VH voltge ID
Figure 4-4. Flow of Adjustment Program