SC547 Copier display on the panel  SC547

sc 547 mean fixing unit error ,you can reset by simply getting into simulation mode and then switch off an the machine ,getting into the simulation mode is simply by pressing 107 and press and hold c ,

Be specific with your copier type, however that problem is related to the fixing assembly.
in the fixing assembly check if your fuser lamp is okey and the thermistor. if okey the power supply. If the fixing assembly is receiving power.

The error sc 547 refers to a "Zero cross signal malfunction".

This means that the applied power supply AC frequency was detected at over 66Hz or below 45Hz, and the zero cross signals are not detected within a certain period within 500 ms after the main power switch has been turned on.

Possible causes are:
- Power supply board defective
- IOCSS defective
- BICU defective

Try to reset the SC code by entering SP5810 and select 1.
Then hold down the photo mode key and the # key at the same time for at least 3 second.
Then turn the machine off and on again.
If the same issue still appears, try to replace the Power Supply Unit.

Heat up failure in fuser area. Have tech check thermofuse and thirmistor for signs of wear or dirty

Enter the SP mode by entering, Clear Modes, 1,0,7, then hold down the Clear/Stop Key for more than 3 seconds. Then enter the Copier SP mode.
To reset the SC 547, enter SP5-810 (SC code reset) and select “1”.
Next, depress the “Photo mode” key. While depressing the “Photo
mode” key, depress the # key at the same time and hold both keys for at least 3 seconds (it is not necessary to turn the main switch off and on). If the machine beeps 5 times, the reset was successful. If it only beeps twice, the reset failed, and you need to try the reset procedure again.

fix the problem with the fuser and reset in service mode

Zero Cross Signal Malfunction.
Fusing/Hot roller temperature does not increase.
The fuser rollers need to be inspected.

· Hot roller fusing
lamp brown
· Hot roller
thermofuse opened
· Defective main
control board
· Defective I/O
control board
· Defective AC drive
board

more than likely the thermofuse.

Did you unplug any other wires by actcident or move some thing? was that problem there before. If not recheck what you did.

Must have unplugged the thermister on the coupling connection bank. Reset fuser: Clear modes/ 107/ press and hold clear/stop. Pick copy sp. select mode. exit out of all screens and cycle power.