Epson Stylus CX4900 Service Manual page 145

EPSON Stylus CX4900/CX4905/CX5000/DX5000/DX5050/CX5900/CX6000/DX6000/DX6050
PF Scale Sensor positioning adjustment
Use the following procedure to confirm that the PF Scale is
positioned in the center of the PF Encoder Sensor.
1. Test fit the Main Board Unit, and confirm whether or not
the PF Scale is positioned in the center of PF Encoder
Sensor.
2. If the PF Scale is positioned in the center of the PF Encoder
Sensor, adjustment is complete. If scale is not positioned in
center of sensor, adjust position of the PF Scale using spacer
(0.5mm thickness) as shown in the figure below.
Left Side
0.1 -1 mm
Spacer
Figure 4-26. PF Scale Sensor Positioning Adjustment
DISASSEMBLY/ASSEMBLY
Right Side
Spacer is not applied to the Main
Board Unit for service part.
Place spacer between Shield
Board and Main Board.
If PF Scale is off to the left,
remove the spacer.
If PF Scale is off to the right,
add an additional spacer.
(Total of 2 spacers)
PF Scale
A D J U S T M E N T After removing/replacing the Main Board Unit, perform the
R E Q U I R E D
adjustment referring to
Printer Section
Revision A
Table 5-1."Required Adjustments" (p172)
145