Error c-3721

c-3721 (fuser over-temperature)

When you first power on the laptop repeatedly press f8 until the safe mode menu appears.

If this code come back after this procedure get a new fuser, do NOT reset and Reset dealing with the fuser it can catch on fire that will ruin a perfectly good day

1. Turn OFF the main power switch.
2. Turn main power switch ON while pressing the Utility/Counter key.
3. Touch [Trouble Reset].
4. Check to make sure that [OK] is displayed and it has been reset.
5. After turning off the main power switch, turn it on again more than 10 seconds after and check if the machine starts correctly.

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

model number would help

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

fuser temp too high to reset turn off machine then turn on while holding down the utility/counter button when the trouble reset button comes up on the touch screen touch it and make sure it says ok then turn the machine off wait 10 seconds and turn back on if error code comes back fuser unit will have to be replaced

Fusing abnormally high temperature detection (heating side)
Check the fusing unit for correct installation
Check the fusing unit, PRCB and DCPU for proper connection and correct or change as necessary.
Change fusing unit
Change PRCB
Change DCPU

When quoting that error message, Konica told us the machine was disabled remotely by them.

was told this message meant Konica have disabled the machine remotely.

5905 - 2076 - 2586 - 1571 - 3721 - 6123 - 2141