C6500 error code c-3906

[Guest]

Hi guys!

I am an operator and my machine recently brought up the error c-3906 during warmup, turned the machine on and it begins to warm up and then brings up the code. please help if you can.

thank you

[jma676]

Konica Minolta - Bizhub Pro C6500 - Error SC-3906

Cause: Fusin low temperature hardware detection abnormality. Temperature Sensor/4 (TEMS/4) detected abnormality signal continuously for the specified time.

If you has operator, contact a KM Technician, to solve this.

Then need reset DipSW 3-1.

[theprinter]

/thanks for that, do I need to set dipsw 3-1 to on or off

[Stirton.M]

Turn it off.

[jma676]

-----------------------------------------0=Off---------------------------------------------------

[nullskull]

Hey I have this same issue on a 1250p would replacing any parts help with this?

[Synthohol]

does it come right back after setting dip sw 3-1 to 0?

[nullskull]

does it come right back after setting dip sw 3-1 to 0?

Mine will return anywhere from 20 min to an hour after the dip sw is reset. Someone suggested it might be a voltage issue from the wall.

[Ziggy]

Hey I have this same issue on a 1250p would replacing any parts help with this?

Looking in service manual the first thing I would check is the lamps

C-3906 Classification Main body: Fusing sensor abnormality Cause Fusing temperature sensor/4 (TH4): temperature abnormality (Hard)
TH4 detects the fusing abnormality detection 6. Measures to take when alert occurs The main body and the option stop immediately. Estimated abnormal parts

• Fusing temperature sensor/4 (TH4)
• Fusing heater lamp /3 (L3)
• Printer control board (PRCB)
• AC drive board (ACDB)

Correction Be sure to change the software DIPSW3-1 from 1 to 0 and turn OFF/ON the sub power switch (SW2) of the main body after fixing the defective parts.

Note

• If DIPSW3-1 is set to 0 before defective parts are fixed, it may cause fire.

[wjurls]

Mine will return anywhere from 20 min to an hour after the dip sw is reset. Someone suggested it might be a voltage issue from the wall.

TH 4 Can get pretty gooped up and torn. I would suggest going in and replacing TH4. While in there, replace the auxiliary roller and it's related bushings and bearing as well as the cleaning sheet.