EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Troubleshooting Troubleshooting based on Printed Result 205
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
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
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 “Cleaning” (p.339) by the Adjustment Program.
Execute “Power Cleaning” (p.94) in the Panel Setting menu.
Execute “Initial Ink Charge” (p.339) by the Adjustment Program.
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 “Power Cleaning” (p.94) or “Initial
Ink Charge” (p.339). If misalignment is found in light magenta color, perform
the “SSCL” (Super Sonic Cleaning).
980mm Band Feed Adjustment (p.336)
Print Image (p.366)
C A U T I O N
If the PAPER SIZE CHECK and the PAPER SKEW CHECK in
the Panel Setting menu are set to OFF, and the user-defined paper
size is incorrect, printing on the platen surface may occur.
C H E C K
P O I N T
Be sure to clean the platen and sub platen if they have smudges.
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