EPSON Stylus Pro 7400/7800/9400/9800
Revision B
Troubleshooting
Overview
171
3.1 Overview
This section explains the basic procedure for troubleshooting problems on the printer
quickly and efficiently.
3.1.1 Preliminary Check
Make sure to verify or perform the following basic items whenever servicing the
printer.
1. There is no foreign material which interferes with the proper operation of the
printer.
2. Print out the status sheet following the procedure below.
1. Check that the printer is in “Ready” status, and press the [Menu
] button
and select TEST PRINT by pressing the [Paper Feed
] button.
2. Press the [Menu
] button again and press the [Paper Feed
] button to
select STATUS SHEET.
3. With the STATUS SHEET highlighted, press the [Menu
] button and
[Enter
] button to print the status sheet.
Check the information printed on the status sheet to find out possible causes of the
error; if the main units have reached their end of life, or if there is something
wrong with the user-defined panel settings. If it is the panel setting error, see Step
9.
3. Both outside and inside of the printer are free of significant dirt. Clean it if
significant dirt is observed.
4. None of the parts or components of the printer are missing, chipped or damaged.
5. All of the harnesses are free of damages and properly connected to their
connectors correctly.
6. The cams and gears in the printer mechanism are engaged correctly showing no
signs of wear.
7. When smudges appear on printed pages, clean the rubber rollers in the printer
mechanism if it solves the problem.
8. The rubber rollers in the printer mechanism are engaged correctly showing no
signs of wear.
9. Initialize the NVRAM on the C594 Main Board (reset the user-defined panel
settings to their factory default) if necessary.
Execute the DEFAULT PANEL in the Maintenance mode.
3.1.2 Troubleshooting Procedure
Follow the flowchart given below to troubleshoot problems efficiently.
W A R N I N G
When handling the lithium battery used for backup of the RTC on
the Main Board, strictly follow the safety instructions given in
C A U T I O N
Before disassembling/reassembling the printer, be sure to turn
the power switch OFF, confirm the panel display disappears
and unplug the power code.
Always use the recommended tools for disassembling/
reassembling, adjusting or servicing the printer.
Always use the specified lubricant and adhesive.
Be sure to perform the required adjustments.
Occurrence of Troubles
“Troubleshooting based on Panel Messages”
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 ...