Grainy Or Ghosting - Epson Stylus Pro 4000 Field Repair Manual

Stylus Pro 4000 Field Repair Guide
Note: Grainey refers to an image that does not have smooth tonal transitions, or sharp resolution.
Note: Ghosting refers to components of an image that are intended to be on top of each other (or
adjacent) but are offset.
Note: A low resolution image can me mis-diagnosed as Grainy.
Grainey or ghosted images are usually caused by electronic or mechanical adjustments. The following is a list of
adjustments that should be checked.
• Print Head Slant Adjustment (CR)
• Print Head Slant Adjustment (PF)
• Auto Bi-D Adjustment [PG 1.2]
• Auto Uni-D Adjustment
Additionally the proper Print Head to media gap should be verified (Standard, Narrow, Wide, and Wider). The gap
can be adjusted by performing the
Intermittent or missing Nozzles may also be a factor.
Non-Epson media or improper media settings in the driver can cause grainy images.
Use another Computer with the Epson Driver and Epson Media to eliminate the users equipment.
The following components occasionally cause the issue.
• Carriage Encoder
• Carriage Encoder Strip
• Carriage Motor
• Carriage Belt Tension

Grainy or Ghosting

Grainy or Ghosting
Platen Gap Adjustment.
Printer Component, Software Item, LCD Display, Printer Button
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