Display says close door a, when its closed.
This is a very common problem with the 77X0 series. The lower left door magnets have come loose and won't hold the door closed all the way. If you press on the door and hold it closed...the error should go away. The "Door A" needs replaced unless you can get just the magnets and replace them.
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 phaser 7760 streaking
to fined out what the problem could be you need to open a word doc and sent a blank page to the printer. from this it will show where the problem is in the printer
if u still get streaking it couls be a faulty toner and it may not be the cyan toner either. i would give the fuser unit in the printer a check. if there marks on tthis unit i can cause this problem as well
SOURCE: Xerox Phaser 7760 Prints White Lines Diagonally Across Page
That is normally caused by a bad developer housing.
SOURCE: xerox phaser 8560 close control panel error
Bad control panel. Xerox will replace for free (800 635 8100) call and ***** to get it for free (They had a "LOT" of defective panels)
User installable.
SOURCE: i have blocked the fuser uit
All you have to do is open the fuser unit on the end (2 Screws) and you will find a fuse which has 3 strips (in a plastic casing with wires attached). You must the solder the strips so that they are joined, and that should reset the fuser.
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