Epson Stylus Photo R1800 Service Manual page 66

EPSON Stylus Photo R1800/R2400
Observed Faults Details of the Fault
The printout is Ink smudges appear on the
stained with ink. blank area of the printout.
The printout is Images are printed grainy in
grainy. all print modes. Or the image
looks rough.
When printed at 5760 dpi, the
printed images are poor or
grainy.
Regarding hue of The whole image is reddish.
images
Troubleshooting
Table 3-13. Print Quality Troubles
Faulty Part/
Part Name
PF Roller Shaft 1. Check the PF Roller Shaft for ink stain.
PF Roller Shaft
Adjustment 1. Check that PG, Bi-D and Head Angular Adjustments have
Main Board been made properly.
Print Head
2. Print the adjustment check patterns and check if they are
grainy.
Adjustment 1. After making sure that PG, Bi-D and Head Angular
Main Board Adjustments have been made correctly, check whether
Print Head PW Sensor has been adjusted properly.
2. Print the adjustment check patterns and check if the
printed images are still poor or grainy.
Adjustment 1. Check if the PG has been adjusted properly.
Print Head
2. Check that Bi-D and Head Angular Adjustments have been
made properly.
3. Print the adjustment check patterns and check the image
color.
Overview
Check Point
Revision B
Remedy
1. Clean the PF Roller Shaft with a soft cloth.
1. Make the adjustments according to the
specified adjustment priority.
Refer to Chapter 5 "Adjustment".
2. If the images look still grainy after
adjustment, replace the Main Board with a
new one.
1. Make the adjustment according to the
specified adjustment priority.
Refer to Chapter 5 "Adjustment".
2. If the image quality does not improve after
the adjustment, replace the Print Head and
Main Board in this order, and check the
image graininess.
1. Make the adjustment according to the
specified adjustment priority.
Refer to Chapter 5 "Adjustment".
2. Make the adjustments according to the
specified adjustment priority.
Refer to Chapter 5 "Adjustment".
3. If the image color does not change after
adjustment, replace the Print Head with a
new one.
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