Cr Scale; Removing The Cr Scale - Epson Stylus Pro 4910 Service Manual

Epson Stylus Pro 4900/Epson Stylus Pro 4910

3.4.4.3 CR Scale

Take extreme care to avoid soiling the CR Scale surfaces with ink
C A U T I O N
or by touching them with bare hands. In addition, be careful not to
scratch the surface on which patterns for detection are printed by
bumping the scale against frames of the main unit. The above
precautions should always be followed, or a malfunction of the CR
Unit may occur.
1. Remove the Front Cover. (p142)
2. Remove the Right Upper Cover.
3. Remove the Control Panel Cover.
4. Remove the Right Cover. (p139)
5. Remove the Left Cover. (p137)
6. Unlock the CR Unit, and move the CR Unit to the left side.
7. Disengage the CR scale spring from the hook on the left side of the main frame.
8. Remove the CR scale spring from the CR Scale.
9. Disengage the CR Scale from the hook on the right side of the main frame.
10. Pull out the CR Scale from the CR Unit.
Be sure to refer to Chapter 4 "Adjustment"
A D J U S T M E N T
R E Q U I R E D
specified adjustments after replacing the CR Scale.
<Adjustment items>
1. CR Encoder and Scale Check
2. CR Speed Initialize
DISASSEMBLY & ASSEMBLY
(p138)
(p136)
(p124)
(see p277) and perform
Disassembly and Assembly Procedure
Step 8
CR scale spring
CR Scale
Hook
Figure 3-81. Removing the CR Scale
Revision A
Step 9
CR Scale
Hook
CR Scale
171
Confidential