[Error Code] xerox workcentre 24 fault code 007-284

[karanoberai21]

hi everybody from karan
from last few days my wc 24 is showing the fault code 007-284. there is no describtion about the code in the manuals and on internet. i can print and copy my documents without any problem though having the fault code.
can anybody help what is this code about.

[xcopytech]

The Tray 4 Level sensor does not detect tray lift.

[HASSAN]

xerox WC5645

can you help me to solve fault 03-540 in XEROX WC5645