Epson Stylus CX3700 Service Manual page 112

EPSON Stylus CX3700/CX3800/CX3805/CX3810/DX3800/DX3850
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
PF Scale
Figure 4-20. 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)
Printer Section
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 in the following order. (Refer to Chapter 5
"ADJUSTMENT")
[When it is possible to read data from the old board]
1. "EEPROM Data Copy"
2. "PF Scale Sensor Positioning Adjustment"
[When it is impossible to read from the old board]
1. "PF Scale Sensor Positioning Adjustment"
2. "Market Setting"
3. "Head ID Input"
4. "Top Margin Adjustment"
5. "Head Angular Adjustment"
6. "Bi-D Adjustment"
7. "First Dot Adjustment"
8. "CR Offset"
Revision A
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