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Tom K
Tom K, Asst. Information Systems Manager
Category: Printers
Satisfied Customers: 1165
Experience:  BS in IT from UMass Lowell, 10+ years working in the computer technology field
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I am getting a red light on my ricoh 3760 printer/fax/copier.

Resolved Question:

I am getting a red light on my ricoh 3760 printer/fax/copier. It might also be called Ricoh 4420L. It says call service 0543H. Can you please tell me what this is for?
Submitted: 6 years ago.
Category: Printers
Expert:  Tom K replied 6 years ago.

That error code means Fuser Overheat Error 1, Hot Roller Fusing Lamp Overheat. This has happened due to faulty or dirty/worn out heating roller thermistor. Try turning off the copier for 1-2 hours and let it cool down. Now check if error disappears. If error is still there you'll need to clean/replace the thermistors.

 

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Customer: replied 6 years ago.
Do you know where it is located?
Expert:  Tom K replied 6 years ago.

The thermistor is located with the fuser unit inside the machine.

 

A replacement thermistor can be bought from here: http://www.precisionroller.com/thermal-control-devices-for-ricoh-4420l/details_27143.html

 

 

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