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)
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.
by the Adjustment Program.
in the Panel Setting menu.
by the Adjustment Program.
2. Adjustment
If dot missing is not found, carry out the following adjustments and check the
result.
If the trouble appear on all colors, perform
or
. If misalignment is found in light magenta color, perform
the “SSCL” (Super Sonic Cleaning).
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.
Summary of Contents for Stylus Pro 7400
Page 1: ...EPSONStylusPro7400 7800 9400 9800 Large Format Color Inkjet Printer SERVICE MANUAL SEIJ05002 ...
Page 10: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 147: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 170: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 207: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Page 292: ...C H A P T E R 5 ADJUSTMENT ...
Page 373: ...C H A P T E R 6 MAINTENANCE ...
Page 380: ...C H A P T E R 7 APPENDIX ...
Page 385: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 1 of 4 Revison G ...
Page 386: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 2 of 4 Revison F ...
Page 387: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 3 of 4 Revison F ...
Page 388: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 4 of 4 Revison E ...
Page 389: ...Model PX 7500 7500S 9500 9500S Board C594 SUB Sheet 1 Revison C ...
Page 390: ...Model PX 7500 7500S 9500 9500S Board C594 SUB B Sheet 1 Revison E ...
Page 391: ...Model PX 7500 7500S 9500 9500S Board C594 SUB C Sheet 1 Revison D ...
Page 392: ...Model PX 7500 7500S 9500 9500S Board C594 PNL Sheet 1 Revison D ...
Page 396: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 03 R ev 01 C594 E LE C 011 202 201 200 ...
Page 397: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 04 R ev 01 C594 E LE C 021 203 204 ...
Page 398: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 05 R ev 01 C594 POWE 011 300 301 302 ...
Page 403: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 10 R ev 01 C594 ME CH 051 700 701 X15 700 ...
Page 410: ...R ev 01 C595 E LE C 011 200 201 202 PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 03 ...
Page 411: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 04 R ev 01 C595 E LE C 021 204 203 ...
Page 412: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 05 R ev 01 C595 POWE 011 300 302 301 ...
Page 417: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 10 R ev 01 C594 ME CH 051 701 X15 700 700 ...