Repair Advice for the  Lexmark T654, T652, T650 Error Code 920.00
The  Lexmark T654, T652, T650 Error Code 920.00 means that the fuser did not maintain proper operating temperature within the steady state control. In other words the fuser is having problems keeping the temperature up as needed. Several things can cause this problem and you might be able to get your machine up and running without the need for expensive repair cost. However, if you do decide you need to replace the fusing assembly then you can find links to purchase the fuser on this page and a link to the fuser replacement instructions.
1. Turn the machine off/on  and ensure the fuser unit  assembly is properly  installed.
2. Ensure the proper voltage  fuser is installed in the  machine.
3. Replace the fuser unit  assembly if problem  remains.
12 MONTH WARRANTY 40X4418 LEXMARK T650/652/654 FUSER ASSEMBLY
Other Diagnostic Tips for the  Lexmark T654, T652, T650 Error Code 920.00
1. Check the power source. Make sure the machine is not plugged into a power strip with other large devices that use lots of power.
2. Never plug these machines into battery back ups. If the printer is plugged into one, then remove it and plug it straight into a wall outlet for testing purposes.
3. Move the machine to a different circuit.
4. Check your paper and fuser settings to make sure they match what you are feeding through the machine.
Technicians
5. Remove the fusing assembly and check the thermistors for build up on the surface and make sure they are correctly in place.
6. Make sure paper is not wrapped around the fuse  hot roller.
7. Check the contacts.
8. Replace the fuser.
Click on the link below for the Fuser Replacement instructions.
Lexmark T654, T652, T650 Fuser Assembly Replacement – 40X4418
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