Service manual

EPSON Stylus Photo 870/1270 Revision B

ADJUSTMENT Adjustment 128

5.2.6 Head angular adjsutment

During production process, tolerance in carriage unit and printhead size

occurs, which may cause the printhead to be installed at an incorrect

angle. Therefore, if you do not make this adjustment, color overlapping is

not performed correctly and color/white line problem occurs as a result.

To change the head angle, use the adjust lever on the right side of the

carriage unit.

You are required to make this adjustment under any of the following

circumstances:

You replace the printhead.

You replace the carriage unit.

You change the adjust lever setting.

The adjustment lets you run a test pattern to which you refer to obtain the

suitable head angle.

1. Loosen the two screws (CBP, 3x6) securing the head fastener to the

carriage and the one screw (CBB Sems W2, 2.5x6) securing the

printhead to the carriage. (Refer to Chapter 4.)

2. Start the service program and get to the main menu.

3. Select

Head angular adjsutment

from the main menu. You see the

Head angular adjustment window.

Figure 5-16. Head Angular Adjustment Window

4. From the head angular adjustment menu, select

head angular

adjustment pattern

and click

. The following test pattern prints.

Figure 5-17. Head Angular Adjustment Pattern Example

CAUTION

Before/after this adjustment, perform all necessary

adjustments listed in Table 5-2.