Aficio sp4100n sc541 error

Fusing thermostat/thermistor open

Symptom: The fusing temperature detected by the
thermistor is below 10°C for 5 seconds
after the main power switch is turned
on.

Possible Cause:
• Fusing thermostat defective or out of
position
• Fusing thermistor defective or out of
position
• Power supply board defective

SC541 or SC542 is a fusing problem clean /check/ replace thermistor 1 and 2 and fuser fuse 1 and 2, these are located on your fusing unit

sc 541=Heating roller thermistor error (Fusing unit).
The thermistors could be dirty or damaged.
The fusing unit can be removed and inspected(without removing any screws)(Left door)(lower handle).
If you see any damage you might have to replace the unit(or only the part if u r lucky).

SC541 is a Fusing thermistor open (center) The temperature of the hot roller remained below 0oC for 5 sec at the center of the hot roller. Fusing thermistor out of its position because of incorrect installation. Fusing thermistor disconnected or defective power supply not within rated range (15% or more below rating). Try cleaning or replacing the thermistors and reset code in service mode.

This is a fusing unit error code. Most likely one or both of the thermistors have failed. The fusing unit is the part that gets hot just before the paper exits the machine. The thermistors are the electronic parts in the fusing unit that monitor the temperature of the unit. This code means that the thermistors are either not "seeing" or reading any heat from the unit or for some reason the heater lamps are not coming on. In most all cases it is the thermistor/s that have gone bad and are not reading heat properly. You will need a service technician to replace these. Should be less than $200 repair.
Good Luck

Fuser error.
Fix problem (Fuse, lamp, or thermistor), then reset code by entering service mode and powering off/on machine

Troubleshooting tips:
Enter SP Mode by holding down "up" and "down" arrow for 10 s then you press "enter"

SC 541 Heating roller
thermistor error
The temperature measured by
the heating roller thermistor
does not reach 7 °C for ten
seconds.
• Loose connection of
the heating roller
thermistor
• Defective heating roller
thermistor
• Defective BCU
1. Check if the heating roller thermistor
is firmly connected.
2. Replace the fusing unit.
3. Replace the BCU.
Controller
errors CTL The error has occurred in the
controller.
See .Troubleshooting Procedure. in
the table.
A
The error involves the fusing unit.
The machine operation is disabled.
The user cannot reset the error.
Turn the main switch off and on.
Reset the SC (set SP5-810-1). Enter the SP Mode by holding down "up" and "down" arrow for 10 s then you press "enter"
Turn the main switch off and on. Also, check info on this link: http://helpdeskgeek.com/how-to/ricoh-aficio-cl7200-printer-sc541-error/ If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

hello sir; you need to reset, following the steps as below;
press "clear mode" then enter107 then press and hold down "clear/stop" key about 3 sec. or more, then turn power off and back on .

SC541: Fusing Thermistor Open
Fusing thermistor defective or out of position
Poor thermistor terminal connection
Poor connection in socle of fusing.

sc541 is a fusing unit error code. Can you reset the code in service mode?