Epson Stylus Pro WT7900 User Manual

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SpectroProofer ERRORThere is a problem with the 
optional SpectroProofer.Note the error number and see your 
SpectroProofer manual for details.
WRONG MAINT. TANK
RIGHT SIDE MAINT. TANK 
WRONG TYPE
INSERT CORRECT TANKA non-genuine maintenance 
tank is installed.Replace the maintenance tank with a 
genuine Epson maintenance tank; see 
page 97.
WT INK MAINTENANCE 
REQUIRED
REMOVE AND SHAKE 
WHITE INK CARTRIDGEIt’s been a month since the 
white ink cartridge was shaken. 
To prevent possible clogging, 
the printer stops working.To continue printing, you must shake the 
white ink cartridge. See page 79 for 
instructions.
Message 
(in alphabetical order)
ExplanationResponse
 
						

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Improving Print Quality
You can often improve print quality by doing the following:
Run a nozzle check and cleaning cycle. See page 83 for instructions.
Align the print head. See page 87 for instructions.
If these suggestions don’t help, try the solutions in the following table.
ProblemSolution 
Your print has poor print 
quality.If you see incorrect or missing colors, or if your print has horizontal banding, 
check the following:
◗Run a nozzle check and clean the print head, if necessary. See page 83 for 
instructions. 
◗Check the ink indicators to see if you are low on ink. (If you replace ink 
cartridges with the printer turned off, the ink indicators will not be accurate.) 
Replace ink cartridges if necessary, as described on page 88.
◗Check the expiration date printed on each ink cartridge. If a cartridge is too 
old, replace it as described on page 88. 
◗Make sure the type of paper you loaded matches the paper setting you 
selected on the control panel and in your printer software. 
◗If you’re using cut sheet media, make sure the printable side is face up.
Your print has vertical 
banding.Vertical banding is caused by print head misalignment. This may appear as 
misregistration, ghosting, or misaligned vertical lines.
Align the print head as described on page 87.
White areas in your print are 
uneven in density.Due to the special properties of Epson white ink, some settling of the ink 
components can occur over time. This may cause uneven printing.
◗To maintain optimal image quality, shake the installed white ink cartridge 
once a week; see page 79.
◗Run a nozzle check and select the PRINT WITH WHITE INK option; see 
page 83. Check the results and clean the print head.
◗If you haven’t printed with white ink for a long time, you may need to refresh 
the white ink supply; see page 86.
◗Make sure the AUTO WT INK REFRESH setting hasn’t been turned off in 
the Printer Setup menu. 
◗When storing and using Epson film, strictly follow the temperature and 
humidity guidelines on page 45.
 
						

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Your print appears blurry or 
smeared.◗Make sure the type of paper you loaded matches the paper setting you 
selected on the control panel and in your printer software. 
◗Make sure you’re using compatible media and it was stored in a dry, 
humidity-free environment. If necessary, load new paper.
◗If you’re printing on Epson film, be sure to use the film basket to catch 
ejected media; see page 59.
◗If you’re using cut sheet media, make sure the printable side is face-up.
◗If ink is smeared on the front of your print, the paper feed rollers may be 
soiled. See page 99 for cleaning instructions.
◗If ink is smeared on the back of your print, make sure PAPER SIZE CHECK is 
ON in the control panel menu. This prevents printing beyond the edge of the 
paper and soiling the inside of the printer. Clean the paper path as described 
on page 99.
◗If ink is smeared on the bottom edge of your print, the paper is curled toward 
the printable side. Flatten the paper or curl it toward the other side. 
You experience problems 
using non-Epson media or a 
non-supported Epson paper 
type.Although the Epson Stylus
 Pro WT7900 is designed to work primarily with 
Epson film, it is possible to print on other selected Epson paper types. Check 
the Epson Pro Imaging website at www.proimaging.epson.com or your 
Epson Professional Imaging Authorized Reseller for compatible media.
◗You may need to adjust the settings for the paper in your printer software. 
See the instructions included with the paper, and follow the paper 
manufacturer’s guidelines.
◗You may need to create custom paper settings using the printer’s control 
panel; see page 73. When you’re done using the settings, be sure to return 
them to standard (STD).
If you observe horizontal banding, check the following:
◗Check if your printer software provides a method for adjusting the paper 
feed. You can also use the printer’s PAPER FEED ADJUSTMENT to reduce 
banding. Reduce the value for white lines, and increase it for overlapping 
dark lines. 
◗Make sure the PAPER THICKNESS setting is correct for your paper.
If your print is smeared, check the following:
◗Check if your printer software provides lets you adjust the paper thickness, 
drying time, or color density.
◗If you’re printing on thick paper, the printer’s PLATEN GAP setting may be 
incorrect. Use the control panel to change the setting to WIDE or WIDER; 
see page 69.
ProblemSolution 
 
						

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Solving Operational Problems
If you can’t turn the printer on, if it stops printing unexpectedly, or if 
nothing prints, check the following: 
Paper is loaded correctly. 
The printer is plugged securely into a working electrical outlet that’s not 
controlled by a switch or timer.
The interface cable is securely connected to the printer and your system.
The voltage supplied by the electrical outlet matches the voltage on the 
printer’s rating label. If not, turn off the power and unplug the power 
cord immediately. Contact Epson for assistance; see page 11 for details.
If none of these suggestions help, try the solutions below.
ProblemSolution
The printer stops printing 
unexpectedly.◗If the  Pause/reset button light is flashing, the printer is performing a 
maintenance procedure or waiting for ink to dry. Wait until the light stops 
flashing.
◗Check the LCD display on the control panel to see if an error has occurred. 
Follow the instructions for the messages beginning on page 106.
The printer sounds as if it’s 
printing, but nothing prints.◗Follow the instructions beginning on page 83 to clean the print head.
◗Communication between the computer and printer may have been 
momentarily interrupted. Try restarting the computer and printing again.
Nothing prints. ◗Turn off the printer and computer. Make sure the interface cable is securely 
plugged in. Then restart the printer and computer.
◗Make sure the interface cable meets the requirements; see page 11.
◗The printer port setting doesn’t match the printer connection port 
(Windows).
Windows 7: Click   > Devices and Printers. Right-click the icon for your 
printer, then select Properties. Click the Ports tab and make sure your 
printer port is selected.
Windows Vista: Click   > Control Panel > Hardware and Sound > 
Printers. Right-click the icon for your printer, then select Properties. Click 
the Ports tab and make sure your printer port is selected.
Windows XP: Click Start > Control Panel > Printers and Other Hardware 
> Printers and Faxes. Right-click the icon for your printer, then select 
Properties. Click the Ports tab and make sure your printer port is selected.
◗Download and install the latest driver for Windows from the Epson website 
at www.proimaging.epson.com.
 
						

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Solving Miscellaneous Printing Problems
If your printouts are not what you expected, try the suggestions below:
ProblemSolution
Your print has incorrect or 
garbled characters.◗Make sure your software is installed correctly and the printer is selected. 
◗Clear any stalled print jobs. 
◗Turn off the printer and computer. Make sure the interface cable is securely 
plugged in at both ends.
Your print has incorrect 
margins.◗Check the page size or paper size settings in your application. Make sure 
they are within the printer’s printable area.
◗Paper is loaded incorrectly. Follow the instructions beginning on page 45 to 
reload the paper. 
◗Make sure PAPER SIZE CHECK and PAPER SKEW CHECK are turned on in 
the Printer Setup menu.
◗The ROLL PAPER MARGIN setting in the Printer Setup menu is incorrect. 
See page 128 for more information.
Blank paper is printed.◗Make sure your software is installed correctly and the printer is selected. 
◗Make sure the paper size setting in your printer software is correct for the 
paper you’re using. 
The printer continues to feed 
paper after you have 
cancelled a job.◗Press the  Pause/reset button button on the printer to clear any print 
job data in the printer’s buffer and reset the printer.
◗Make sure the paper source is set correctly.
Roll paper cannot be cut.◗The paper cutter may be dull. Follow the instructions on page 94 to replace 
the cutter.
◗Make sure   appears on the LCD display. If not, press the 
lpaper 
source button to select this setting. Also check the auto cut settings in your 
printer software.
 
						

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Solving Paper Problems
If paper feed or paper jam problems occur frequently, try one or more of the 
following solutions:
Make sure the printer’s environment falls within the required 
temperature and humidity range (see page 121). 
When storing and using Epson film, strictly follow the temperature and 
humidity guidelines on page 45.
When printing on Epson film, be sure to use the film basket to catch 
your prints (see page 59).
Make sure no foreign objects are inside the paper path.
Make sure the printer isn’t located in a brightly lit area. The paper 
sensors may not operate correctly.
If you’re using non-Epson media or a non-supported Epson paper type, you 
may need to adjust the settings for the paper in your printer software, or 
create custom paper settings using the printer’s control panel; see page 73.
See the instructions included with the paper, and follow the paper 
manufacturer’s guidelines.
For roll paper, try adjusting the PAPER SUCTION setting. See page 73 
for more information.
For heavy or thick media, follow the instructions on page 68 to load the 
media correctly.
Make sure the paper is not folded, wrinkled, or damp.
Make sure the paper is not too thick or too thin. See page 65, page 122, 
and page 123 for paper specifications.
Make sure the PLATEN GAP setting is correct for the paper or media 
you’re printing on. See page 69 for more information.
If you customize the paper settings, be sure to return to the standard settings 
when you’re done.
 
						

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Clearing Paper Jams
When roll paper gets jammed in the printer, printing stops and you see a 
paper jam message on the LCD display. Follow these steps to clear a paper 
jam:
1. Cut the paper at the paper insertion slot.
2. If the paper release light is not on, press the   button to release the 
paper.
3. Rewind the paper.
 
						

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4. Open the front cover if necessary.
5. Carefully pull down the jammed paper.
Caution: To avoid damaging the printer, do not touch the rollers, ink 
absorption pads, ink tubes, or cables around the print head.
6. Close the front cover, if necessary. Press the Ppower button to turn the 
printer off and then back on.
 
						

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Uninstalling and Reinstalling the Driver
If you need to uninstall and then reinstall the communication driver for any 
reason, follow the instructions below. 
1. Do one of the following:
Windows 7 or Windows Vista: Click   
> Control Panel > Uninstall 
a program
. Select EPSON Printer Software in the program list.
Windows XP: Click 
Start > Control Panel > Add or Remove 
Programs. 
Select EPSON Printer Software in the program list and 
click 
Change/Remove.
2. Select your printer icon and click 
OK. Follow the on-screen instructions 
to uninstall your software. 
3. If you want to reinstall your printer software, restart your computer. 
Then follow the instructions on page 41 to install the software. 
Ti p :  Check the Epson Pro 
Imaging website at 
www.proimaging.epson.
com for updated drivers 
and utilities that may 
become available.
 
						

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