Epson Stylus Pro WT7900 User Manual

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Maintaining and Transporting the Printer|81
6. Hold the cartridge horizontally and shake it for about 30 seconds (about 
100 times).
7. Hold the cartridge with the arrow pointing toward the printer. Then 
insert it into the slot until it clicks into place.
8. Close the ink cover.
Checking Printer Status
Using the control panel, you can check the amount of ink remaining, the 
total number of prints, and the status of your maintenance tank(s), and other 
information. You can print out a status check or view the printer’s status on 
the LCD display. 
Note: Shake the 
cartridge back and forth 
about an inch or two 
(5 cm) in each direction. 
Do not touch the green 
chip on top of the 
cartridge.  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.
 
						

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Printing Status Information
The status check sheet shows some of the current default settings, the page 
count, and the status of the maintenance tank. 
1. Make sure paper is loaded in the printer.
2. Press r 
Menu. 
3. Press d to select 
TEST PRINT, then press r. 
4. Press d to select 
STATUS SHEET, then press r. 
5. Press 
OK to start printing. 
Viewing Status Information
1. Press r Menu. 
2. Press d to select 
PRINTER STATUS, then press r. 
3. Do one of the following: 
To check the firmware version, press r again. When done, press l.
To check the amount of ink left, press d to select INK LEVEL, then 
press r. The percentage of ink left in the first cartridge is displayed. 
Continue pressing d to see the status of the remaining cartridges. 
When done, press l. 
To check how much capacity the maintenance tank(s) have, press d 
to select 
MAINTENANCE TANK, then press r. The percentage 
remaining for each tank is displayed. As the tank is filled, the 
percentage drops. When done, press l.
To check job history, press d to select JOB HISTORY, then 
pressr. For the last 10 print jobs saved in the printer, you see the 
ink used (in milliliters) and paper used (in square centimeters). The 
most recent job is saved as No. 0. When done, press the l button. 
To check the total number of prints, press d to select TOTAL 
PRINTS
, then press r. When done, press l. 
To check the status of the printer for myEpsonPrinter.com, press d 
to select 
EDM STATUS, then press r. When done, press l.
Note: You can replace 
the ink cartridges, cutter 
blade, and maintenance 
tank yourself. Other 
printer parts need to 
be replaced by an 
authorized Epson service 
technician. 
Note: You can change 
the units of 
measurement from 
centimeters to inches 
and feet using 
maintenance mode on 
the printer’s control 
panel. See page 92 for 
instructions.
 
						

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Maintaining and Transporting the Printer|83
4. Press   to exit the menu.
For more information about the Printer Status menu, see page 128.
Checking and Cleaning the Print Head
If your printed image shows a color shift or horizontal lines, you should 
check the print head to see if any nozzles are clogged or deflected. If one or 
more nozzles is clogged, you can run a cleaning cycle to clear the nozzles. 
Checking the Print Head
Check the print head by printing a nozzle check pattern, as described below, 
and then examine it to determine whether the print head needs cleaning. 
1. Make sure roll paper or letter- or A4-size cut sheet paper is loaded in the 
printer. If you need to check the white ink nozzles, use film to ensure 
that the ink is visible.
2. Press r 
Menu.
3. Press d until 
TEST PRINT is selected, then press r.
4. Make sure 
NOZZLE CHECK is selected, then press r.
5. Select 
PRINT WITH WHITE INK or PRINT NOW, then press r.
Select PRINT WITH WHITE INK if you think there may be a 
problem with the white ink nozzles. This option ensures that white 
ink is included as part of the test pattern. If necessary, the printer 
will replace cleaning liquid with white ink in the print head before 
printing the pattern.
Select PRINT NOW if you know the white ink nozzles are working 
properly and you don’t need to check them. The printer may 
include white ink as part of the test pattern, but only if it’s already 
loaded in the print head.
6. Press 
OK to start printing the nozzle check pattern.
Note: The printer 
automatically checks the 
print head and cleans it if 
necessary, but you can 
adjust the settings (see 
page 86).
Note: You can have a 
nozzle check pattern 
automatically printed on a 
regular basis. See 
page 86.
Note: The printer 
normally replaces white 
ink with cleaning liquid 
when it’s shutting down.
 
						

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84|Maintaining and Transporting the Printer
7. After the pattern is printed, use at least a 10× eye loupe to examine it. 
If the pattern looks good, as shown below, the print head is clean. 
Since cleaning liquid is nearly invisible, the printer checks the 
cleaning nozzles automatically and shows their status below the 
pattern. In this case, “OK” indicates that the cleaning nozzles are 
working properly.
If any dots or segments are missing or deflected, as shown below, 
one or more nozzles may be clogged. If the cleaning nozzles are 
clogged, the printer shows their status as “NG” or no good. If either 
of these problems appears, run a cleaning cycle as described in the 
next section. Then print another nozzle check pattern to make sure 
the nozzles are clean.
If the nozzles are still clogged after three cleaning cycles, run a power 
cleaning cycle as described in the next section.
Running a Cleaning Cycle
You can run several types of cleaning cycles from the control panel (or from 
the Epson LFP Remote Panel): normal cleaning, power cleaning, and 
cleaning of each pair of ink colors.
If you know which colors you need to clean, select 
CLEAN COLOR PAIRS 
and then press r to select the desired colors. This prevents ink from being 
used unnecessarily to clean nozzles that aren’t clogged.
Note: The cleaning 
nozzles use fluid to clean 
the print head and related 
parts. If they’re clogged, 
you may not immediately 
notice a decline in print 
quality, but you should 
clean them anyway.
If the printer shows CL : -- 
as the cleaning nozzle 
status, the check failed. 
Note the error code on 
the LCD display and 
contact Epson as 
described on page 11.
 
						

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Maintaining and Transporting the Printer|85
Run the power cleaning only if the normal cleaning process is not sufficient 
to clear the nozzles. The power cycle uses a large quantity of ink, so it is 
recommended only as a last resort. To use power cleaning, the cartridges 
need to be at least 50% full; replace a low cartridge if necessary. After 
cleaning, you can reinsert the old cartridge.
1. Print a nozzle check pattern to make sure the print head needs cleaning, 
as described on page 86.
2. Make sure the printer is ready and the B ink 
Check light on the printer’s 
control panel is not on or flashing.
3. Press the  cleaning button on the control panel. 
4. Press u or 
d to select one of the following:
 NORMAL CLEANING—Press OK to start the cleaning cycle.
 CLEAN COLOR PAIRS—Press OK, select the color pair you want 
to clean, then press 
OK to start the cleaning cycle.
 POWER CLEANING—Press OK to start the cleaning cycle.
5. When cleaning is finished and the Ppower light stops flashing, print 
the nozzle check again to confirm that the head is clean.
For effective cleaning, always run a nozzle check between cycles.
If the nozzle check pattern is still missing segments or has deflections, 
you can run a normal cleaning cycle up to three times. If that doesn’t 
work, try running a power cleaning cycle. If necessary, turn the printer 
off and leave it overnight to dissolve any dried ink, then clean the print 
head again the following morning with a normal cleaning cycle.
If you continue to detect a problem with the white ink nozzles, perform 
a white ink refresh as described on page 86.
If you still see no improvement, contact Epson for assistance.
Caution: Don’t run a 
cleaning cycle while 
thick media is loaded in 
the printer.
Note: You must use at 
least a 10
× eye loupe to 
examine the nozzle check 
pattern for deflected 
nozzles. 
If a single nozzle in one 
color remains clogged, 
use SS Cleaning (see 
page 93).
 
						

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86|Maintaining and Transporting the Printer
Refreshing the White Ink Supply
If the white ink density in your printouts is inconsistent even after cleaning 
the print head, you may need to refresh the white ink supply—especially if 
the printer hasn’t been used for more than a year. This helps clear any white 
ink components that have settled in the supply line. 
Before starting, make sure you have already shaken the installed white ink 
cartridge as described on page 79.
1. Press r 
Menu.
2. Press d until 
MAINTENANCE is selected, then press r.
3. Press d until 
CLEANING is selected, then press r.
4. Press d until 
WT INK REFRESH is selected, then press r.
5. Press 
OK to start the refresh process.
6. Wait several minutes for the process to complete, then print a nozzle 
check pattern (page 83) to verify that the white ink nozzles are working.
Automatically Checking and Cleaning the Print Head
By default, the printer checks the print head on a regular basis and cleans it if 
necessary. This is done without printing a nozzle check pattern or using any 
paper. You can specify how often you want this to happen. You can also have 
a nozzle check pattern automatically printed at selected intervals, so you can 
check it yourself.
1. Press r 
Menu. PRINTER SETUP is selected. Press r again.
2. Press d until 
AUTO NOZZLE CHECK is selected, then press r. 
3. Select one of the following, then press 
OK:
 ON: PERIODICALLY—The printer periodically checks its nozzles 
and runs a cleaning cycle if necessary (default). 
 ON: EVERY JOB—The printer automatically checks its nozzles 
and cleans them if necessary before each print job. This uses a very 
small amount of ink; recommended for large unattended print jobs.
Note: If the printer 
detects clogged nozzles, 
it performs a single 
cleaning cycle by default. 
You can increase the 
number of cleaning cycles 
up to three with the 
AUTO CLEANING TIMES 
setting in maintenance 
mode (see page 92).
 
						

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Maintaining and Transporting the Printer|87

—The printer will not perform automatic nozzle checks and 
cleaning cycles.
4. Press 
l, then select PRINT NOZZLE PATTERN and press r.
5. Select 
ON: EVERY PAGE to have the nozzle check pattern printed 
before each print job, or select 
ON: EVERY 10 PAGES. The setting is 
turned 
OFF by default. These settings take effect only when you print 
on roll paper. 
6. Press 
OK to save the setting.
Aligning the Print Head
Aligning the print head is one of the most important things you can do to 
ensure the best print quality. If vertical banding appears on your prints, if 
they look grainy or blurry, or if you see misregistration or “ghosting,” you 
need to align the print head. 
If you haven’t already done so, it’s a good idea to run a nozzle check before 
aligning the print head (page 83). This ensures that the print head alignment 
patterns print correctly.
Follow these steps to align the print head:
1. Load the bundled roll paper included with the printer. You can also use 
Epson film or other compatible Epson media. 
2. Press r 
Menu. 
3. Press u or 
d until HEAD ALIGNMENT is selected, then press r.
4. Make sure 
PAPER THICKNESS is highlighted, then press r.
5. Make sure 
SELECT PAPER TYPE is highlighted, then press r. Select 
the paper type loaded in the printer and press 
OK. Select Bundle Roll 
Paper
 if you’ve loaded the bundled paper included with the printer.
6. Press l twice to return to the Head Alignment menu.
7. Press d to select 
ALIGNMENT, then press r.
Ti p :  For best results, use 
the same width of paper 
that you plan to print with. 
Note: When you select 
the paper type, it 
automatically sets the 
paper thickness for Epson 
media. 
 
						

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88|Maintaining and Transporting the Printer
8. Make sure AUTO is highlighted, then press r. 
9. Make sure 
UNI-D (uni-directional) is highlighted, then press r. This is 
the type of alignment to start with. 
10. Press 
OK to start the alignment process.
Each alignment takes about 7 minutes. The printer scans the alignment 
pattern and adjusts itself automatically. Don’t open the front cover or 
turn off the printer during this process.
11. When the uni-directional alignment is finished, press r 
Menu. 
12. Select 
HEAD ALIGNMENT, select ALIGNMENT, and then select 
AUTO. 
13. Select 
BI-D and press OK to start the alignment process.
Replacing Ink Cartridges
Before you begin a large print job, you should check your ink levels. If one of 
your cartridges is low, you can replace it before you start. Or you can wait 
until the ink is expended, replace the cartridge, and then continue the job 
without any loss of print quality. However, it is best to replace a low ink 
cartridge before starting a large print job.
The easiest way to check ink levels is from the control panel LCD display. 
The icons show the approximate amount of ink remaining. The numbers 
above the icons correspond to the 11ink cartridge slots on the printer:
If necessary, you can also check the percentage of ink remaining in each 
cartridge with the Printer Status menu, as described on page 81.Ti p :  You can store 
partially used ink 
cartridges for up to 
6 months. If you do so, 
Epson recommends 
covering the openings 
with tape to protect 
them from dust.
Ink cartridge 
statusMaintenance 
tank status
 
						

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Maintaining and Transporting the Printer|89
When the Bink Check light is flashing and INK LOW appears on the LCD 
display, the indicated cartridge is almost expended. Make sure you have a 
replacement cartridge. When the light stays on and 
REPLACE INK 
CARTRIDGE 
is displayed, the cartridge is expended. You must replace the 
cartridge before you can continue printing.
You can install any combination of 150, 350, and 700 ml cartridges. Use the 
following Epson UltraChrome
® HDR ink cartridges: 
You can purchase genuine Epson ink and paper from an Epson Professional 
Imaging Authorized Reseller. To find the nearest reseller, visit 
www.proimaging.epson.com (U.S. sales), www.epson.ca (Canadian sales), or 
call 800-GO-EPSON (800-463-7766).
Before you start, make sure the printer is turned on. Then follow these steps:
1. Note the color of the cartridge that is low or expended. 
2. Press the
  button. 
If ink in one or more cartridges is expended, the corresponding ink 
cover is unlocked.
If the ink is not expended, select the ink bay you want to open and 
press 
OK.
Ink baySlot no.Cartridge150 ml350 ml700 ml
Left 1 Cyan (C) T642200 T596200 T636200
2 Orange (O) T642A00 T596A00 T636A00
3 Yellow (Y) T642400 T596400 T636400
4 Light Cyan (LC) T642500 T596500 T636500
5 White (WT) T642C00 T596C00 —
6 Cleaning Liquid (CL) T642000 — —
Right 7 Vivid Magenta (VM) T642300 T596300 T636300
8 Cleaning Liquid (CL) T642000 — —
9 Green (G) T642B00 T596B00 T636B00
10 Photo Black (PK) T642100 T596100 T636100
11 Vivid Light Magenta 
(VLM)T642600 T596600 T636600
Note: We recommend 
that you use genuine 
Epson cartridges and do 
not refill them. The use of 
other products may affect 
your print quality and 
could result in printer 
damage.
Yields vary considerably 
based on images printed, 
print settings, paper type, 
frequency of use, and 
temperature. For print 
quality, a small amount of 
ink remains in the 
cartridge after the 
“replace cartridge” 
indicator comes on.
For best printing results, 
use up a cartridge with 
six months of opening the 
package.
Caution: Leave the 
expended cartridge in the 
printer until you are ready 
to replace it.
To prevent ink reporting 
errors, never replace the 
ink cartridges with the 
printer turned off. 
 
						

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90|Maintaining and Transporting the Printer
3. Open the ink cover all the way. Then press in the cartridge you want to 
replace and release it. The cartridge pops out.
4. Remove the expended ink cartridge from the printer. 
5. Make sure the replacement cartridge is the correct color and remove it 
from its package. 
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.
Ti p :  It’s a good idea to 
save your first set of 
expended cartridges so 
you can use them for 
transporting the printer, if 
necessary.