Xerox DocuColor 2240, Service Manual

Page: 762 / 1489

09/03
3-19 DC 3535/2240/1632, WC M24
IQ16, IQ17
Image Quality Initial issue
IQ16 Spots RAP
Initial Actions
Ensure that the paper in use is fresh, dry, and within specification for weight and quality.
Check print driver and copier control panel settings to ensure the media is being run in the
proper mode.
Compare the spots against the samples in the Image Quality Defects supplement. If the defect
matches the Debris Centered Deletions sample, go to the
IQ9 RAP.
Procedure
The defect occurs in Copy mode only.
Y
N
The spots occur at a fixed interval on each print.
Y
N
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
The problem is Fuser offset and/or lead edge smears or spots.
Y
N
CAUTION
Do not use a vacuum cleaner or any solvents in the following step. Dam-
age to the IBT Cleaner Assembly will result.
Do not attempt to clean the cleaning blade. It WILL be damaged if any
wiping or excessive pressure is applied.
Remove the IBT Cleaner Assembly ( REP 9.16 ). Carefully clean the clean-
ing blade and the Mylar shield with a soft brush or a lint free cloth. Brush
away any accumulation of toner on the foam seal and the outside sur-
faces. Wipe the surface of the Transfer Belt with a lint free cloth.
If the problem continues, replace the IBT Cleaner Assembly (
PL 5.3 ).
Go to the IQ13 RAP.
Check the Transfer Belt ( PL 5.3 ) for dirt or damage. Clean or replace as required.
Go to the IQ14 RAP.
Ensure that the original is free from the defect.
Clean the Platen Glass and Lens.
IQ17 Missing Colors RAP
One or more of the primary (YMCK) colors is missing from the image.
Initial Actions
Determine if the problem is in copy or print mode.
If the problem occurs in print mode only, check the troubleshooting portion of the Network Con-
troller Service Documentation.
If the problem is in copy mode and print mode, or if the problem persists continue the RAP.
Procedure
Enter dC612 . Make a print of Test Pattern 22 to determine which colors are missing. Make a
print of Test Pattern 2 (Halftone IOT) 50% for the missing colors. Color is still missing.
Y N
Replace the IIT/IPS PWB ( PL 18.3 ).
Go to IQ21 Developer Bias RAP and check the Developer Bias circuit. If the circuits are OK,
check the ROS for damage or contamination. Clean, repair or replace as required ( PL 3.1 ).