Xerox DocuColor 2240, Service Manual

Page: 757 / 1489

09/03
3-14 DC 3535/2240/1632, WC M24
IQ12
Initial issue Image Quality
IQ12 Process Direction Bands, Streaks, and Smears RAP
Initial Actions
• Clean the Fuser. Check the metal stripper baffle in the Fuser for contamination.
• Check the 2nd BTR and the Detack Sawtooth for Toner contamination.
Procedure
NOTE: The repetition rate for Transfer Belt defects varies considerably, depending on paper
size and mode of operation. The defect may appear as frequently as every 3rd sheet, or may
only occur every 14 sheets.
The defect occurs in approximately the same position IB to OB on multiple prints.
Y
N
If the defect occurs intermittently, examine the Developer Housings for evidence of toner
clumping. If clumping is found, replace the Developer (
PL 6.2 ). If this does not resolve the
problem, replace the Developer Housing ( PL 6.2 ).
The defect resembles the IBT Cleaner Streak defect.
Y N
The defect is a full-width (LE - TE)
Streak Deletion in Process Direction .
Y N
Check the following:
•
Remove the Fuser Assembly. Examine the Heat Roll for damage or contamina-
tion. Clean or replace as required (
PL 7.1 ).
• Check the Developer Housing ( PL 6.2 ). Repair or replace as required.
• If the problem is related to a single color, replace the Drum Cartridge (see
Machine Consumables in Section 6).
Enter dC612 . Print Test Pattern 2 (halftone) at 40% coverage for each color. The defect
is present for all colors.
Y
N
• Check the ROS window for damage or contamination. Clean or replace as
required.
• Check Drum Cartridge for affected color. Check for damage or contamination to
the BCR.
• Go to the IQ20 RAP to check the 1st BTR bias circuit for the affected color
• Replace the Developer ( PL 6.2 ) for the affected color. Check the housing for
damage or toner clumping.
CAUTION
Do not attempt to clean the cleaning blade. It WILL be damaged if any wiping or exces-
sive pressure is applied.
Remove the IBT Cleaner Assembly ( PL 5.3 ). Inspect the cleaning blade and Mylar seal
for damage. Clean Mylar shield, or replace assembly as required.
If the IBT Cleaner Assembly is OK, check the Transfer Belt (
PL 5.3 ) for damage or con-
tamination. Ensure that there is no debris or loose wiring, etc. in contact with the belt.
Clean or replace as required.
Check the IBT Cleaner Assembly; check for toner buildup on the top side of the Cleaner Blade
that contacts the IBT Belt. Replace the IBT Cleaner Assy if required (
PL 5.3 ). Ensure that the
blade and the Mylar backing are free from damage. Check that the auger turns freely. Clean,
repair or replace as required.
A
A