Epson Stylus Pro 7400 Service Manual page 205

EPSON Stylus Pro 7400/7800/9400/9800
SMUDGES ON THE BACKS OF PAGES
When ink smudges appear on the backs of pages, perform the following items.
1. Check if the paper is completely flat and free of folding or curl. Change the paper
with new one if any abnormality is found.
2. Check the paper path for ink smudges, and clean the path if ink stain or smudges
are found.
Surface of the PF Roller
Surface of the Front Paper Eject Guide
Surface of the Rear Paper Guide (includes the switching knob)
Surface of the Paper Eject Roller
If the PAPER SIZE CHECK and the PAPER SKEW CHECK in
C A U T I O N
the Panel Setting menu are set to OFF, and the user-defined paper
size is incorrect, printing on the platen surface may occur.
3. Check the Ink Pads for borderless printing for any abnormality and correct them if
necessary.
Deformation
Not securely attached
Ink is accumulating on/around them
Be sure to clean the platen and sub platen if they have smudges.
C H E C K
P O I N T
Troubleshooting
HORIZONTAL WHITE OR BLACK STREAKS
When white or black streaks appear on the printed images in the Carriage movement
direction, check the following items.
1. Printing Nozzle Check Pattern (Test Print Menu) (p.72)
Execute the NOZZLE CHECK in the Panel Setting menu to check if dot missing
exist or not.
If dot missing is found, run a head cleaning or perform an initial ink charging as
necessary following the procedure below.
Execute
Execute
Execute
2. Adjustment
If dot missing is not found, carry out the following adjustments and check the
result.
Check Alignment (p.363)
If the trouble appear on all colors, perform
Ink Charge"
the "SSCL" (Super Sonic Cleaning).
980mm Band Feed Adjustment (p.336)
Print Image (p.366)
Troubleshooting based on Printed Result
"Cleaning" (p.339) by the Adjustment Program.
"Power Cleaning" (p.94) in the Panel Setting menu.
"Initial Ink Charge" (p.339) by the Adjustment Program.
"Power Cleaning" (p.94)
(p.339). If misalignment is found in light magenta color, perform
Revision B
or "Initial
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