William DeMuth
Jun 14, 20192 min
From a visual inspection these fusers are identical. 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 fusers 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 one hottest we get into our HP laser printer technical support hotline lately. How can I tell the difference between the RM1-8395 and E6B67-67901?
The following diagram can be used to measure the ohm readings across these fusers to help you determine its identity.
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.
Pins Ω
1-3 21
1-6 36
3-6 15
A-B 1M
C-D 1M
E-F 0
H-I 6.7M
K-L 6.7M
1-3 25
1-6 43
3-6 18
A-E 1.4M
B-D 0
C-F 1.4M
H-I 7.3M
K-L 7.3M
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 in the main connector.
Locate the measurements from the diagram above for the model fuser you are verify.
Take measurements with ohm meter
Compare readings.
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.