Xerox pdl error 016-720 - Xerox Phaser 6125 Laser Printer

Dell and Xerox printers reportedly have this error. What model printer is it?

Example of Xerox:

https://forum.support.xerox.com/t5/Printing/WorkCentre-7435-Error-codes-116-324-amp-016-720/td-p/8240

This is a communication fault between the printer board and the copier. The problem could be any one or more of the following - PDL I/F board, system motherboard, or image processor. I would try resetting all the circuit boards of the interface box. This is located at the rear in the upper right. This is where the fax board could be located as well. You may have to have a qualified tech do this work. Good Luck.

E677 IS PDL board mounting error

make sure you are using the KX PRINTER DRIVER first
if so..
tray changing the pdl format
in the printers and faxes area right click on your printer
right click go to properties.
click on device settings tab (you have this if you are using the KX driver)llhopefully you are
you will see a button (pdl) click on pdl
changed pdl to pcl5e
good luck

roblem : 
The machine displays an E674 code. This may be followed by an E677 code when the Fax pcb is removed. The imageRunner also has a Print Board installed. 

Solution : 

With the Fax Board and Print Board installed an E674 code occurred. When the Fax Board was removed an E677 code then occurred. 
Try removing the PDL Interface pcb for the Print Board from the copier. Reinstall the Fax Board, if the E674 code does not occur and the copier is capable of sending and receiving faxes, then replace the PDL Interface pcb because it may be faulty and causing the two E codes; E674 for faxing and E677 for printing.

E677 on iR400 is the otional printer board assembly was trouble. It must be change. Try this : replace your optional printer board assembly, the problem was correct? The other day you must bought optional printer board assembly. God Bless You....?!

How are you trying to print? You need N boot rom. Press Counter Check. Do you see IR3300(IR2200N) or IR3300(IR2200). If you see the N then you should be able to print with it. If not, you can't.

In Service Mode (to get into this press Additional Functions (button with * on it) > 2 then 8 > Additional Functions) go to Copier > Display > Version. What do you see for BOOT-ROM (does it have a N at the end?). For PS/PCL what do you see?

If your BOOT-ROM is N and you don't have a number for PS/PCL then call a technician to install networked system software.

If BOOT-ROM is not N, buy a Network Multi-PDL Kit C1 and get a technician to install it and load N system software.

If BOOT-ROM is N and you have number for PS/PCL check your IP settings. Make sure that DHCP is turned off. Set up your printer using an IP port with the static IP address assigned to the copier.
Use PCL5e or PS drivers, don't use PCL6.

this is
Controller system error
swith of and swith on the printer it will work .If this error occurs again even after the
power switch is turned off and then on
again, please replace
PWB

try to go to property then setting device button PDL and try to put pcl 5e

update the firmware !!