Epson Stylus Pro WT7900 User Manual

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6. Gently shake each cartridge as shown for the following durations:
White ink cartridge: 30 seconds (about 100 times)
Other ink cartridges: 5 seconds
7. Hold the cartridge with the arrow pointing toward the printer. Then 
insert it into the slot until it clicks into place. Don’t force it in. 
8. Close the ink cover. 
Once the cartridge is installed, the printer returns to its 
READY state. 
Caution: Do not touch 
the green chip on top of 
the cartridge, or you may 
damage it.
Note: If you can’t insert 
the cartridge smoothly, 
you may have the wrong 
cartridge. Check the 
package and product 
code. If the BInk light 
remains on after installing 
the cartridge, it may not 
be inserted fully.
Caution: Do not remove 
and re-insert cartridges 
more often than 
necessary. Doing so can 
compromise the needle 
valve seal and allow air to 
enter the ink tubes, 
causing nozzle damage.
 
						

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Changing the Date and Time
1. Press r Menu.
2. Press d until 
MAINTENANCE is highlighted, then press r.
3. Press d until you see 
CLOCK SETTING, then press r.
4. Use the d, u, and r buttons to set each item in the date and time, 
displayed in the following format: 
MM/DD/YY HH:MM.
5. Press 
OK to save the setting, then press  to exit the menu.
Using Maintenance Mode
Maintenance mode lets you make special settings and perform maintenance 
procedures that may be needed occasionally. You can use maintenance mode 
to do the following:
Change the language or units of measurements used on the printer’s 
control panel menus.
Adjust the maximum value for roll paper tension.
Run a “super strong” cleaning cycle
Change the number of cleaning cycles the printer automatically 
performs when it detects clogged nozzles. 
Return all of the printer’s control panel settings to their default values.
Follow these steps to use maintenance mode:
1. Make sure the printer is turned off. 
2. Press and hold the 
 button, then press the Ppower button and 
hold it until the printer turns on and the LCD displays 
MAINTENANCE MODE.
Ti p :  You can use the 
Printer Setup menu to 
enable the roll paper 
counter, paper size 
check, and several other 
printer features (see 
page 128).
You can also use the 
EpsonNet Config utility to 
set up a time server. This 
disables the CLOCK 
SETTING menu.
 
						

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3. Use the d and u buttons to select the settings described below. If you 
need to back up to the previous menu level, press l.
To change the language on the LCD display, press d to highlight 
LANGUAGE, then press r. Press d until you see the language you 
want, then press 
OK to select it. The printer exits maintenance 
mode and returns to normal operation.
To change the units of measurement, press d to highlight LENGTH 
UNITS
, then press r. Press d to switch from METRIC to 
FEET/INCH, then press OK to select it. Press l when done.
To change the temperature units of measurement, press d to 
highlight 
TEMPERATURE UNITS, then press r. Press d to switch 
from 
C (Celsius or centigrade) to F (Fahrenheit), then press OK to 
select it. Press 
l when done.
To change the maximum roll paper tension, press d to highlight 
ROLL PAPER TENSION, then press r. Press d to decrease the 
maximum value, or u
 to increase it (from 1 to 5). The default 
setting is 3. Press 
OK to select the setting you want.
To run a super strong cleaning cycle, press d to highlight 
SS CLEANING, then press r to display EXECUTE. Press OK to 
start the cleaning cycle.
To return all control panel settings to their default values, press d to 
highlight 
DEFAULT PANEL, then press r to display EXECUTE. 
Press 
OK to restore the default settings.
To change the number of times the printer cleans the print head 
after it performs a nozzle check and finds blocked nozzles, press d 
to highlight 
AUTO CLEANING TIMES, then press r. Press u to d 
to change the setting (from 1 to 3), then press 
OK to save the 
setting. The default setting is 1 (recommended).
4. To exit maintenance mode, turn off the printer by pressing the Ppower 
button. Press the Ppower button again to turn on the printer in the 
normal operating mode.
Note: The CUSTOM 
setting in maintenance 
mode is not normally 
used.
 
						

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Replacing the Paper Cutter
If you notice that your paper isn’t being cut cleanly, the cutter may need to 
be replaced. You can obtain a new cutter (part number C12C815331). See 
page 10 for ordering details.
Removing the Old Cutter
Make sure the printer is turned on, then follow these steps to remove the 
blade: 
1. Remove any paper from the paper path.
2. Press r 
Menu.
3. Press d until 
MAINTENANCE is highlighted, then press r.
4. Press d until CUTTER REPLACEMENT is highlighted, then press r.
5. When the screen displays 
EXECUTE, press OK. The paper cutter moves 
to the replacement position. 
6. Turn off the printer.
7. To remove the cutter cover, press in the tab and pull it down.
Note: If the optional 
SpectroProofer is 
attached to the printer, 
remove it following the 
instructions that came 
with it.
 
						

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8. Loosen the screw using a Phillips-head screwdriver.
9. Carefully remove the cutter.
10. Dispose of the cutter in accordance with local regulations.
 
						

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Installing the New Cutter
Remove the new blade from its package, then follow these steps to install it:
1. Attach the new cutter to the holder. Align the white pin with the white 
hole as shown.
2. Firmly tighten the screw using a Phillips-head screwdriver.
3. Insert the cover, then press it closed.
Note: Reinstall the 
optional SpectroProofer if 
necessary, following the 
instructions that came 
with it.
 
						

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4. Turn the printer back on.
5. Run the Cutter Adjustment from the Maintenance Menu on the control 
panel. 
After you print the pattern, put the two cut pieces together and select 
the pattern with the most precise cut between the two colors. Select the 
pattern number on the control panel and press 
OK.
Replacing the Maintenance Tank
The maintenance tank stores ink that gets flushed from the system during 
the initial ink charge and manual and automatic print head cleaning. When 
the tank is almost full, the message 
MAINTENANCE TANK NEARLY FULL 
appears on the LCD display. When the tank is completely full, the printer 
stops working and 
MAINTENANCE TANK FULL appears on the LCD. You 
cannot print until the tank is replaced.
You can check how much space remains in the maintenance tank by viewing 
its icon on the control panel, shown below. You can also check its status 
using the menus (see page 82) or by printing a nozzle check sheet (see 
page 86). 
The icon shows the approximate amount of space remaining in the tank.
Replacement tanks are available (part number C12C890191). See page 10 
for details.
Maintenance 
tank status
 
						

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Follow these steps to replace the tank:
1. Grasp the handle at the bottom of the tank (on the side of the printer) 
and gently pull it out. Then place the tank in the plastic bag included 
with the new one.
2. Place the used tank in the plastic bag included with the new tank and 
dispose of it carefully.
3. Insert the new tank.
WARNING: If ink gets on 
your hands, wash them 
thoroughly with soap 
and water. If ink gets in 
your eyes, flush them 
immediately with water.
Caution: Be careful not 
to spill ink from the 
maintenance tank when 
removing it. Hold it upright 
at all times and dispose of 
it carefully. 
 
						

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Cleaning the Printer
To keep your printer working at its best, clean it if it becomes soiled.
1. If your prints are soiled by ink on the paper feed rollers, load inexpensive 
roll paper and press d to feed the paper without printing on it. Press d 
several times until the paper is clean. When done, press the   button 
to cut and remove the soiled paper.
2. Turn off the printer and wait until all the lights are off. Then unplug the 
power cord and disconnect the printer from your system.
3. Open the front cover and use canned air or a soft lint-free cloth to 
carefully clean away any dust or dirt inside the printer. 
4. If your prints are soiled on the back, carefully wipe the area shown below 
in blue. If necessary, dampen the cloth, clean the inside of the printer, 
then dry it with a soft cloth.
Caution: Do not touch 
the paper feed rollers or 
absorption pads inside 
the printer, or your prints 
may get soiled.
To avoid damaging the 
components as well as 
the case, never use 
alcohol or thinners to 
clean the printer. 
Be careful not to get 
water on the printer 
mechanism or electronic 
components.
Don’t use a hard or 
abrasive brush.
Don’t spray the inside 
of the printer with 
lubricants; unsuitable 
oils can damage the 
mechanism. Contact 
Epson if you think the 
printer needs lubrication.
 
						

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5. If powdery dust has accumulated, use a toothpick or similar tool to 
remove it.
6. Remove the film and paper baskets. Then clean away any dust or dirt 
around the leg assembly using a soft brush.
7. If the outer case is dirty, clean it with a soft, clean cloth dampened with 
mild detergent. Keep the ink cartridge compartments closed to prevent 
water from getting inside.
8. To wash the paper basket, remove the shafts, then machine wash with 
mild detergent and air dry.
Transporting or Storing the Printer
If you are moving the printer a short distance (for example, in the same 
building), you can roll it on its stand (see page 102). To ship the printer a 
longer distance, you should repack it using the original box and packing 
materials. Follow the instructions below to prepare the printer for shipment.
If you don’t have the original packaging, you can purchase replacement 
packaging from Epson. See page 10 for more information.