Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
ADJUSTMENT CR Related Check & Adjustments 327
Confidential
4.10.5 CR Encoder and Scale Check
EXECUTION MODE
Normal Mode
PROCEDURE
1. Open the Printer Cover.
2. Turn the printer ON.
3. Start the Service Program and press the [F11] key.
The lock of the CR Unit is released.
4. Check the detector of the CR Encoder and the CR Scale for scratch or
contamination. Wipe out the contamination with ethanol if any, and replace the
part if any scratch is found. (P. 170)
5. Press the [F12] key to cap the Printhead.
6. Select CR Encoder and Scale Check.
7. Click [Run].
The CR Unit is moved, and the result will be displayed on the screen.
The result is OK: Go to Step 9
The result is NG: Go to Step 8
8. Since the CR Scale is not loaded correctly, replace the CR Encoder (P. 170) or the
CR Scale (P. 171). After replacing the part, return to Step 6 to check again.
9. Click [Finish].
10. Turn the printer OFF to complete the adjustment.
Figure 4-32. CR Encoder and Scale Check
CR Encoder
CR Scale
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