Ccd Unit (Scanner Unit); Hp Sensor (Scanner Unit); Cr Motor Unit - Epson Stylus PHOTO RX640 Service Manual

EPSON Stylus PHOTO RX640/650

4.4.2 CCD Unit (Scanner Unit)

1. Remove the Scanner Housing (p.57)
2. Remove the Timing Belt from the Driven Pulley while relaxing the belt tension for
the CR Shaft. (Fig. 4-43)
3. Remove the CCD Unit together with the FFC and the CR Shaft. (Fig. 4-44)
When replacing the CCD Unit, the FFC is to be replaced
together. In installation, stick the FFC on the Lower Housing
properly so that it is free from floating. (Fig. 4-44)
Install the CR Shaft while fitting its grooved end in the guide of
the Lower Housing. (Fig. 4-43)
Install the Timing Belt with the tooth side facing inside and
without torsion.

4.4.3 HP Sensor (Scanner Unit)

1. Remove the Scanner Housing (p.57)
2. Remove the screw securing the HP Sensor. (Fig. 4-45)
3. Pull out the harness from the Scanner Unit, and remove the HP Sensor.

4.4.4 CR Motor Unit

C A U T I O N
Do not remove the screws (x4) marked with X for the CR Motor
Unit shown at right. Once they are removed, the belt tension will
change. In such a case, the CR Motor Unit must be replaced. (Fig.
4-45)
1. Remove the Scanner Housing (p.57)
2. Remove the Timing Belt from the Driven Pulley while relaxing the belt tension for
the CR Shaft. (Fig. 4-43)
3. Remove the screw fastening the grounding wire to the CR Motor Unit. (Fig. 4-45)
4. Remove the screw and washers (x3) securing the CR Motor Unit.
Disassembly and Assembly
Timing Belt
Double
adhesive tape
C.B.P-TITE 3x8 (x3)
·
Torque : 0.6±0.1N
Do not remove
(x4)
Disassembly of Scanner Unit
Driven Pulley
Figure 4-43. Removing the Timing Belt
FFC
Figure 4-44. Removing the CR Assy
CR Motor Unit
HP Sensor
m
Figure 4-45. CR Motor Unit and HP Sensor
Revision A
CR Shaft
installed here
CCD Unit
C.B.P-TITE 3x8
·
Torque : 0.6±0.1N m
Grounding wire
C.B.P-TITE 3x6
·
Torque : 0.6±0.1N m
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