Printing problem (by 3 users)

I believe this is a print head overheat error but not sure
unplug for 10 minutes then turn back on and see what happens.

or it could be a waste ink reset problem. This may work
but note,this may not be exact to your menu but should be close.

1) Enter SERVICE MODE By pressing Menu-Scan-Copy-Scan
2) Enter NVRAM by presing <--- or ---> then OK
3) Enter CMY ink level by pressing <--- or ---> then OK
4) Select 1 by presing <--- or ---> then OK
5) Enter K ink level by presing ---> then OK
6) select 1 by presing <--- or ---> then OK
7) Press reset ( design: // )

hope this helps
thanks for your rating