I have a wc 7120 xerox and the screen show me an error 010-311. I don't know how to repair this

SOURCE: xerox dc 12 copier system faulit 9-354

Hi ,
Sir I am have dc12 mech
its giving error code 9-354.
send me the solution as soon as posible.

SOURCE: Xerox Phaser fault 37,002,47:18505

37,0XX.xx Errors - PEST Faults
AC power supplied by power sources such as uninterruptible power supplies
(UPSs) or DC-to-AC inverter systems may not supply correct voltage to
properly power up the printer. Likewise, other devices sharing the same AC
circuit can cause AC voltage sags that cause the printer to fail its AC heater
PEST tests (Print Engine Self Test). The printer may produce any of the
following disconnected heater errors:
■ Printhead jet-stack 37,002.47 or 37,003.48

Error Messages and Codes
■ Reservoir heater, 37,004.40 or 37,005.41
■ Drum heater error 37,006.42
■ Preheater error 37,008.44
■ Ink melters errors 37,009.45 thru 37,013.40
The printer includes several heaters powered by AC. The printer itself can
power up despite insufficient or irregular AC voltage but it may fail its AC
heater tests. This is due the test not measuring sufficient current flowing
through the heater at the moment the test runs.
Devices sharing the printer’s AC circuit shared, such as a laser printer, a
coffee maker, or a space heater, may be placing heavy intermittent demand
on the AC circuit. This sudden inductive demand creates momentary AC
voltage sag that causes the PEST test to fail.
Verify the AC power source prior to troubleshooting these errors. For wiring
diagrams to aid in diagnosing PEST faults, see “Wiring Diagrams” on
page 10-1.
8400/8500/8550/8560 PEST Description
37,001.46: Generic PEST error. Something went wrong during the PEST process.
37,002.47: PEST Error - Printhead Left jetstack disconnect. The left jetstack is
not drawing the expected power from the supply.

SOURCE: Xerox WC Pro 423 fault code U4-6 & U4-4

Hello sir; The U-4 code all are fuser problem, there haave noway to fix it the only way is replace the fuser unit

SOURCE: i have xerox wc 7228, when i try to copy it is

hello

here is the link Xerox offical site about error codes and things that you can do . i hope it useless.

SOURCE: xerox 242 fault code 042-326

foult code 093-317