Epson 4900 Users Guide - Page 120

Checking and Cleaning the Print Head Using the Control Panel

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120 | Maintaining and Transporting the Printer Checking and Cleaning the Print Head Using the Control Panel You can print a nozzle check from the control panel and examine it to determine whether any nozzles are clogged or deflected. Then you can run a cleaning cycle if necessary. 1. Press the button. 2. Press d until NOZZLE CHECK is selected, then press r. 3. Do one of the following: • Select AUTO NOZZLE CHECK and press OK to run a nozzle check without printing a pattern. The LCD screen will report if there are any clogged nozzles and prompt you to clean them. If no nozzles are clogged, "Nozzle clog was not detected" will show on the LCD screen. • Select PRINT CHECK PATTERN and press OK to start printing the nozzle check pattern. 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. Caution: Don't run a cleaning cycle while thick media is loaded in the printer. If any dots or segments are missing or deflected, as shown below, run a cleaning cycle as described on page 122. 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 on page 122. 120

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120
120
|
Maintaining and Transporting the Printer
Checking and Cleaning the Print Head Using the Control
Panel
You can print a nozzle check from the control panel and examine it to
determine whether any nozzles are clogged or deflected. Then you can run a
cleaning cycle if necessary.
1.
Press the
button.
2.
Press
d
until
NOZZLE CHECK
is selected, then press
r
.
3.
Do one of the following:
•
Select
AUTO NOZZLE CHECK
and press
OK
to run a nozzle check
without printing a pattern. The LCD screen will report if there are
any clogged nozzles and prompt you to clean them. If no nozzles are
clogged, “Nozzle clog was not detected” will show on the LCD
screen.
•
Select
PRINT CHECK PATTERN
and press
OK
to start printing the
nozzle check pattern. 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.
If any dots or segments are missing or deflected, as shown below,
run a cleaning cycle as described on page 122. 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 on page 122.
Caution:
Don’t run a
cleaning cycle while
thick media is loaded in
the printer.