Question about IBM Infoprint 1120 Laser Printer

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Invalid Engine Code

I'm getting "Invalid Engine Code" flashing on the printer itself. It';s an Infoprint 1120 - Type: 4520. Anyone know what might fix this? Possibly firmware update but I can't seem to confirm anywhere.

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Re: Invalid Engine Code

Does anyone have a source of the authorization codes for the x560n machine? contact me via

Posted on Dec 14, 2010

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Re: Invalid Engine Code

This is actually a Lexmark printer, so what I'm quoting is a Lexmark sol.

turn off machine

hold down returnand go buttons

turn on printer

hold  until performing test shows and let go of buttons

it will go to a service mode ( instead of saying ready)

got to printer set up

hit select button

go to engine 1,2 or 3


try each one ( hit select to go into that perticular number)

what you are looking for is a number that has an * next to it. Use the arrow keys to scroll. most likely it changed the setting so go and look for that number w/the * and hit select when you see it.

Posted on Oct 18, 2007

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This will help. Thanks please keep updated. please do rate the solution positively .Thank you for using Fixya


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go to http support lexmark dot com /printerfirmware
unsure of link posting here but you get there by googling it
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Authorization Keycode for C510 Engine Code = e140p
C510 Base Code = 891004

* Engine code version is 140P
* Base code version is 891.004

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Infoprint 1120 printer

If you are doing it as a local printer ( parralel cable or USB it can be done through Start, Settings, Printers and faxes, Add a printer.


Network is different.

You have to assign or let it get an IP address from the network.

You can enter it manually in the printer


Hit the left arrow to

Network menu

hit select

Standard net setup

hit select

Print ( to print out the network settings)

scroll to TCP/IP


enter IP manually by scrolling to each number and hitting select

Sep 18, 2007 | IBM Infoprint 1120 Laser Printer

2 Answers


Julie1665, Here are some things that could be causing your problem: -Could be the paper you are printing does not meet the printer specifications. -Could be toner leaking out of the cartridge. -Could be environmental issues, too hot or cold or humid. -The toner density could be set too high. -The electrical contacts that connect the toner cartridge to the printer could be dirty or just not making good contact. -the printer power supply could be defective. -With regards to your toner cartridge are you using new IBM cartridges or refilled/remanufactured? I?ve had many customers call me to fix a printer problem that turned out to be a bad cartridge. All of these are within the capabilities of the typical user except changing the power supply. Let us know if you have any other questions and please don?t forget to rate this post.

Feb 22, 2007 | IBM Infoprint 1120 Laser Printer

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