Fuser unit failure U1-2116 - Samsung CLP 300 Laser Printer

Error message: Fuser unit failure #U1-2320

replace the fuser. Fusers have a life span based on the number of prints and not the age.

If you dont print alot on the unit, consider contacting the retail store or manufacturer

Bad news!

Error Codes > Samsung > SCX8128ND > Code U1-2132, U1 ...

https://printcopy.info > code=U1-2132
Code: U1-2132, U1-2135 · Display: Fuser Unit Failure: #U1-2132. Fuser Unit Failure: #U1-2135. · Description: Temperature of the fuser rises abnormally. · Remedy: • ...

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  Error Codes > HP > LaserJet M436 MFP > Code U1-2132, U1 ...

  https://printcopy.info > code=U1-2132, U1-2315, U1-2...
  The temperature control of the Fuser Unit is abnormal. Remedy: 1. Turn the printer off then on.2. If the error persists, send an on-site technician to perform ...
  
  Videos as well
  
  https://www.google.com/search?q=ERROR+U1-2132&rlz=1C1QJDB_enCA643CA644&oq=ERROR+U1-2132&
  
  ..

Witam,
0500H Heating roller warm-up failure:
The thermistor /1 does not detect the specified temperature and the warm-up cycle is not completed even after the lapse of a given period of time after the cycle has been started.
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Relevant electrical parts
Fuser unit
Printer control board (PRCB)
DC power supply (DCPU)
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Solutions:
1 Check the fuser unit for correct installation (whether it is secured in position).
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2 Check the connector between fuser unit - PRCB PJ9 for proper connection and correct as necessary.
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3 Check the connector between fuser unit - DCPU CN2 for proper connection and correct as necessary.
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4 Change fuser unit.
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5 Change PRCB.
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6 Change DCPU.

replace the fuser

http://www.precisionroller.com/fuser-assemblies---units-for-samsung-ml2955nd/details_73486.html

I agree the fault is almost cetainly with the fuser unit.

This problem is fuser (the section that gets hot) related. It could be one or more of the following things :
Thermistor failure
Heater lamp failure
MCU PWB failure
Thermostat failure
Power supply failure
Interlock (door) switch failure

It could be that the thermistors(monitoring temperature) are just dirty and need cleaning or the thermostat has blown. THe heater lamp inside the fuser roller may have stopped working or their is a power supply issue to the fuser.
You could try pulling the fuser unit out of the copier and checking it / clean it. With these models its usually easier and cheaper to buy a whole new fuser unit.
You could try resetting the fuser error code in service mode.
To enter the service mode press the following keys
Clear (then) Density select (then) Clear (then) Density select (while in this mode do not adjust anything else as this could further damage your system)
enter "14" (with the copy quantity keys) and press copy key. Now restart the copier.

Probably a faulty Fuser. Try replacing the Fuser and see what happens.

Did the Fuser Upper Failure magically disappear? If it did, and you just kept on printing thinking it just "went away".... try a new fuser.

Brother error e50
The error code E50 indicates a fuser unit failure - the fuser unit is no longer working and needs replacing. The error may also display itself on your Brother printer's front display panel as "Fuser Unit Failure" or "Replace Fuser Unit."

What Does the Brother Printer Code E50 Mean? - Small ...

In the fuser unit the Heat roller thermister indicates a low temperature error. Replacing the fuser unit will usually resolve this. Fuser units are consumable items bur for an early life failure such as this it may be worth contacting the manufacturer.