Ericsson 4900 User Manual

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 124. 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 124.

Caution: Don’t run a 
cleaning cycle while 
thick media is loaded in 
the printer.