Service call sc547 error This error display at the first time , so printing , xerox can not be process how can solve this problem

SOURCE: SC547

Press clear modes, 1, 0, 7, and press and hold the clear/stop key. Enter copy sp. Select mode (5), and scroll to 5810 if it exists, and execute. exit back to the copy sp screen. Press data log (7), and scroll to 7807, and execure. Exit all the way back out to the SC547 screen. Turn the power switch off and on. Not the button on the control panel, but the actual switch. If it comes to ready, great, if not, there is somethong wrong with the fuser.

SOURCE: service error 5100

you have a carriage error, not worth fixing throw it away
Canon Tech

SOURCE: error in xerox phaser 8400

37,004.40: PEST - Printhead Reservoir 0 disconnect. Reservoir 0 is not drawing
the expected power from the supply.

One of the printhead cables may have come partially unplugged. Also, an ink spill on the circuit board could lead to this problem.

SOURCE: Xerox 8550 DN display does not work and printer does not print

This model of printer has a known fault with the LCD panel.

Contact xerox in your country, who will arrange to have a replacement front panel sent out to you to install

SOURCE: SC547 error message on display. Orange spanner

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.