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...

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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...

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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...

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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...

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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...

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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...

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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...

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