Updated: Jun 14, 2019
How to tell the difference between the these popular HP 4250 4350 4300 4345 P4015 M4555 M601 M602 M603 Fusers.
If you install the wrong fuser in an HP laser printer you will get a 50.5 error which is a wrong fuser error. Not a big deal, right? What if your returning cores for credit? How about if your performing swap testing with a troublesome printer.
HP printer fuser are getting harder to tell apart. Getting it wrong could mean a extra trip out to a customer or sending the wrong items to a HP parts supplier. This question is becoming more popular on our HP laser printer technical support hotline lately.
The following diagram can be used to measure the ohm readings across these fusers to help you determine its identity.
How to Differentiate Between The HP 4250 4350 4300 4345 P4015 M4555 M601 M602 M603 Printer Fusers
First check the frame for a part number. If the label has been removed follow these steps;
Locate the rectangle power fuser main connector.
Locate the metal contact points within the main connector.
Locate the measurements from the diagram above for the model fuser you are trying to identify.
Take measurements with ohm meter.
Keep in mind that the values assigned to the lettered terminals will vary due to temperature changes. If the fuser has been tested and is still warm, its values may not match those of the lettered terminals listed below.
Other Helpful HP LaserJet Printer Support Resources
HP LaserJet Printers Fuser Mode Adjustments Using FUTURESMART Firmware
Metrofuser is a leading global innovator, manufacturer of printer parts, equipment, diagnostics, repair information and systems solutions for professional users performing critical tasks. Products and services include hp printer parts, printers and printer repair training. Parts include hp printer parts such as printer fusers, printer maintenance kits and other hp printer replacement parts. The company's, customers include office equipment dealerships, online retailers, repair centers and MPS service providers nationwide. Metrofuser has been named to Inc. Magazine’s fastest growing companies five consecutive years.