Bizhub 601 Keeps warming up

[blinxwap]

I have a bizhub 601 in the field that keeps saying warming up ready tp scan. I have cleaned the drum sensors , tested a different fuser unit both fusers works fine, replaced SD/NVRAM CARD once i have replaced the card the machine did warm up and went to ready to copy , i made copies max 60 copies than the machine stops and warms up again i checked the hopped unit and toner botyke to check if toner is supplied hopper is fine, i than replaced Printer control board , same problem max 60 copies mc goes to warming up if you restart the Mc it can make copies than goes to warming up sending peint jobs to the Mc it doesnt print of even gets to the Mc by the time the jobs should reach the Mc it goes into warming up state any suggestions
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[allan]

Check that the ADU latch lever sensor is not out of place.
Does the fuser lamps turn on if you lift the ADU handle with the doors open?

[qbert69]

Warming up....sounds like a fuser issue. Check to make sure fuser thermistors are clean...Additionally, might there be a fuser drive board issue??? Just thinking....[emoji848]

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[blinxwap]

Check that the ADU latch lever sensor is not out of place.
Does the fuser lamps turn on if you lift the ADU handle with the doors open?Yes the lamps turn on

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[blinxwap]

Warming up....sounds like a fuser issue. Check to make sure fuser thermistors are clean...Additionally, might there be a fuser drive board issue??? Just thinking....[emoji848]

Sent from my SM-N950U1 using TapatalkI have cleaned the thermistors and keep in mind i took another fuser of n working mahine with and fitted it on the machine and it still didnt work

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[qbert69]

I have cleaned the thermistors and keep in mind i took another fuser of n working mahine with and fitted it on the machine and it still didnt work

Sent from my SM-A505F using TapatalkPossible fuser drive/power sense board issue I'm guessing...are you able to monitor for proper fuser temps???[emoji848]...just because thermistors are clean doesn't mean the fuser is driven to the maximum proper temperature or that the temperature is being sensed properly!!![emoji57]

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[tsbservice]

What are toner sensor readings?
I would try to add manually toner in developer unit, maybe a spoon and see what will happen.

[allan]

Do you get errors if you run peculiarity adjustments?

[EarthKmTech]

forever stuck in warming up state was a common sign of image quality issues and failed / soiled drum cartridge sensors.

I've always changed drums at 500k is that one still ok at 600+K?

PS, I like your service report format - nice and detailed. Bit different to my method of tipping the hat, giving the thumbs up and walking on out.

These machines are discontinued from support here so I don't see them anymore.

[blinxwap]

Do you get errors if you run peculiarity adjustments?Nope

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[copier addict]

You say that you cleaned the TCSB (the sensor under the drum), but have you tried a new one? This board can fail and cause these symptoms.

[blinxwap]

So i was at the machine yesterday i replaced the imagining unit with one from a working machine didnt solve the problem , i then went on to the fusing unit had another fuser unit replaced the whole fuser unit, mc tested ok but eventually it was the termistors on the fusing unit i rebuild that fuser to do troubleshooting and it was the terminators on the fusing unit causing the problem

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