My konica minolta bizhub 7145 b/w copier is showing error code F-51-5 The copier will power up and then seize. The copier is about 5 years old with a total count of 320,000 copies

It is a generic warm up failure. You need the service call.

Code: C3451 · Description: Fusing Warm-Up Failure (Main) - The Fusing Roller Thermistor does not detect the required temperature

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Konica-Minolta bizhub 195 - Error Code - PrintCopy .info

https://printcopy.info > model=bizhub 195 > code=C3451
Code: C3451; Description: Warming-up failure - The thermistor/1 (TH1) detected that the temperature of the surface of the fusing roller did not reach the ...

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  Konica-Minolta bizhub 350 - C3451 - PrintCopy .info

  https://printcopy.info > model=bizhub 350 > code=C3451
  Konica-Minolta bizhub 350 · Code: C3451 · Description: Fusing Warm-Up Failure (Main) - The Fusing Roller Thermistor does not detect the required temperature ...

have tech come out and replace the web roller above the fuser unit, and clear the counter after install. THAT IS LEGACY MACHINE google for the web roller

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

If you wish to get some details; check the site linked here. Pull up older posts.......
http://electro-medical.blogspot.com/

Replace the IH Power supply, it will solve your problem... Page 71 Item 5 from the parts manual.

In the rear of the machine

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

fuser code hot part replace it

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

do this once code comes back replace the fuser continue reset couls cause fire ruining a perfectly good day


To reset failure codes, perform the following:
1. Enter the 25 mode (turn the machine ON, while pressing the 2 and 5 keys).
2. Select [1. software SW settings].
3. Using the arrows on the left of the touchscreen scroll to DIP SW 3.
4. Using the middle arrows scroll to BIT 1.
5. On the touchscreen select OFF (0).
6. Power the copier OFF/ON.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

with this machine, that code is normally due to worn temp sensors, once they are replaced you can reset the code by:

To reset fuser failure codes, perform the following:
1. Access 25 mode (power OFF, hold the 2 and 5 keys, power ON).
2. Select option 1 [Software SW].
3. Use the scroll arrows to scroll to address 3-1.
4. Select OFF.
5. Power the machine OFF/ON.

the part number for the sensors are p/n 26NA88011

These are heat sensor abnormality error codes in Konica Minolta 7222/7145/7135/7235/7228 models.You did not mention the model.