Epson Stylus Photo 870 Service Manual page 49

EPSON Stylus Photo 870/1270
Printhead
fastener
screw
Figure 4-8. Removing the Printhead Screw
11. Lift out the printhead by angling it up and to the right.
R E A S S E M B L Y
When installing the printhead, tighten the screw referred to
in step 9 only after securing the printhead fastener (see
reassembly note above).
12. Release the clip that holds the linear encoder board in place, as
shown below, and remove the board from the carriage.
Linear encoder board
Clip
Figure 4-9. Removing the Carriage Sensor Board
Screw securing the printhead
Printhead
fastener
screw
Chapter 4 Disassembly and Assembly
"
Be sure the grounding plate is installed on the carriage
R E A S S E M B L Y
correctly. It has two positioning pins on the carriage, as
shown in Figure 4-10.
"
When installing the printhead in the carriage, make sure
the positioning pin inside the carriage fits into the notch
on the printhead. See Figure 4-10.
A D J U S T M E N T
When you remove the printhead or replace it with a new
R E Q U I R E D
one, be sure to perform the following adjustments:
1. "Initial Ink Charge"
2. "Head Voltage ID Input"
the printhead only)
3. "Head Angular Adjustment"
4. "Bi-Directional Adjustment"
Align this positioning
pin with the notch in
the printhead
Figure 4-10. Installing the Printhead
on page 81
on page 75 (when replacing
on page 76
on page 77
Make sure this
part contacts the
carriage bushing
Grounding
plate
Place the grounding plate
on these positioning pins
Carriage assembly
Printhead surface
Printhead circuit board
44