How to fix heat roller temp - Sharp AL-1655CS Copier

This code is for a damaged fixing film on the unit.

You can just replace the fix film assembly FG6-6039-00R, they have refurbished ones avail. Also, replace the cleaning roller assembly FG6-5709 or just the cleaning roller on that assembly called a fixing heat sink roller FB5-4931-000 if you are brave enough (notice the name heat sink). If that roller gets any build up on it, say from using the wrong type of transparency (use Canon E type only), it can no longer remove heat from the fix film assembly.

The problem is the fuser heating element is not getting the correct temp. Or the film has shifted to one side & the sensor is not seeing the white square on the film. Take out the fixing assy and check the film.
Also, on the fixing assy, the cleaning roller built up with toner can cause problems

Sounds like you have bad toner. or fusing area not getting hot enough to fuse to paper. I would try another toner cartridge. If problem goes away. Bad cartridge.

The code has something to do with the fuser heating element which is not getting the correct temp or the film has shifted to one side and the sensor is not seeing the white square on the film. Take out the fixing assy and check the film. The cleaning roller built up with the toner on the fixing assy can also cause problems.

press(C exposure C exposure)led will be off.enter 14 press copy

Here is a way to reset but make sure you follow the instructions correctly.
turn off machine
press online and escape buttons together whilst turning on machine,
when display comes up wait till three options are listed, use arrow button down to select engine, use arrow right to select mode(5.mode) and ok, left arrow to 5.810 SC RESET. OK. PRESS OK AGAIN AND THEN EXECUTE AT BOTTOM OF SCREEN.
Turn off printer and wait ten secs then turn back on.
If only temp error this should reset and start up again, Good luck

C0500, defective upper fuser heater system.
The machine is not reaching a given temp in a given period of time.
The possible causes.
Upper roller heating lamp burnt out.
Upper thermistor failed,
Upper roller thermal fuse blown,
Depending on your capabilities, you might be able to fix it your self.

Hope this is of some help.
I you require additional information, please contact us.
Ed

C3851 Abnormal Low Temp. (Heater):

• The temperature of the Heating Roller Thermistor/ 1 (TH1) is lower than a given level of degree for 1 second or more uninterruptedly during
Ready mode, Low Power mode or printing.
• The temperature of the Heating Roller Thermistor/ 2 (TH3) is lower than a given level of degree for 1 second or more uninterruptedly during
Ready mode, Low Power mode or printing.
Try resetting. To reset a Rank A error follow these steps:
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 the 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.
If the error recurrs then do the following:
1 Check the Fusing Unit for correct installation (whether it is secured in position).
2 Check the Fusing Unit, PWB-M and PU1 for proper connection and correct or change as necessary.
3 Change Fusing Unit
4 Change PWB-M
5 Change PU1

Open heat error, you have a fuser problem, replace fuser. Fuser consists of Upperheat roller, lower heat roller, exit claws/rollers, and a heating circuit with a lamp, thermal temp sensor (thermistor) and a thermal fuse/cutout.

You could measuring fuser removed from machine, checking lamp etc for open circuit, thermistor should be neither short or open circuit.

These days we dont, we just change assembly due to it being a common constantly wearing part, and if for example I pull it apart, fix the lamp, put it together then soon enough I will need to pull it apart again to fix worn roller etc.

I could give you the part number ... JC81-01690A but dont use it, cause that part is for 220volt cause thats what we use in Oz, so contact Samsung and ask for dealer in your country who can supply you.

P.S. Fuser is the Hot bit (180 deg c) at back near paper exit that bonds(melts) the print into the paper.

H4-01 Heat roller low temp is correct.

You machine has a fuser unit that it uses to bond the toner to the paper, it does this with  a heater lamp heating a set of rollers that the paper passes threw after it has printed.

Your machine monitors this unit to regelate its temp, your machine is sensing via a thermister and thermal fuse the temp of the fuser unit is not hot enough to enable use, this would mean the heater lamp is blown, thermister is faulty or thermal fuse blown 95% chance it's the lamp,

What one normally does is replace fuser assembly with new this is not a user thing it requires a tec, but if your into it, it is the hi voltage hot bit near paper exit.