Ich habe einen Kopierer Xerox 5028. Dieser meldet nach ca. 15-20 Kopien den Fehlercode U7-1. Die Copy-Box habe ich schon gewechselt, hat aber nichts gebracht. Weiß jemand die Fehlerursache. Außerdem suche ich ein Service-Manual für dieses Gerät.
Xerox 5028 Fehlercode U7-1
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Hi Dachrinnenlöter,
U7-1
Intermittent U7-1 is usually the copy cartridge, but not always.
Checking the voltage at TP2 and PJ102-20 should give you 25vdc, but
replacing the main board may not always be the fix if you aren't getting
25vdc there. The driver board relay switch is actuated and deactuated
by a high or low from jp102-20. Replace the driver board prior to
replacing the main board. Many of the older style driver boards have
become defective due to heat. The new style board has a larger ceramic
resistor where the old one was failing. If a new driver board doesn't
cure this problem, and a new cartridge or belt yield no success, then
the problem can only be in the main board. You can always remove the
driver board if that fix doesn't work. A main board takes a little more
work to install.FAULT CODE
Also check the pre-charge erase lamp located above the print cartridge, this will give a U7-1 code if it's open.Gruß
Erwin