Charge Voltage; Cq 7 Developer Bead Carryover - Xerox 3001 Service Manual

CQ 7 Developer Bead Carryover Probable Cause Corrective Action
Definition
Bead carryover is one or more small deletions
i n the copy image that appear randomly over
the entire copy. In some cases a single
developer bead can be seen in the middle of
the deletion.
Charge voltage on photoreceptor drum is
1.
too high.
Developer material has more than 30K 2.
feet (9K metres) of copies on it.
Not enough toner i n the developer. This 3.
will cause the developer t o fail.
AC Corotron i s shorted.
4.
Developer material dumping onto 5.
Xerographic Module.
Perform the Electrostatic Series (ADJ 9.2).
Replace the developer material (REP 9.8)
and perform the Electrostatic Series (ADJ
9.2).
Replace the developer material (REP 9.8)
and perform the Electrostatic Series (ADJ
9.2).
Repair or replace the corotron.
Worn drive gears on the right side of the
Developer Housing
The magnetic Roll surface is worn smooth.
replace the Developer Housing.
Trimmer bar gap is out of specification.
Replace the Developer Housing.
The Developer t o Roll Spacing (DRS) is out
of specification. Contact SSE t o check
using the DRS Tool.
Ensure that photoreceptor drum is fully
seated on the drum shaft and i s not
rotating out-of-round.
Xerographic Module is moving away from
the photoreceptor drum. Check that there
is sufficient oil on the fuser.
12/98
CQ 7 Developer Bead Carryover
3-30 3001