Xerox WorkCentre 5687 Series Service Manual page 1002

– Check that the machine is level. Use the line level tool, 600T41510. If the machine is
not level, the developer can leak from the developer module that causes a light
image.
– If the light images are a series of finger print deletions and form a pattern like a (bar-
ber pole or auger marks). The images are repeating at proximately 7 cm and at
approximately 30 degrees to the lead edge throughout a grey or dark dusting. Check
for developer leakage, refer to Developer Assembly Checkout.
– ADJ 9.2 Image Quality Adjustment Routine.
– Check the developer drives:
1. Remove the xerographic module, (32-38 ppm) PL 9.22 Item 2 or (45-87 ppm)
PL 9.20 Item 2.
2. Make a visible bald patch on the developer roll by moving the developer brush.
3. Re-install the xerographic module.
4. Enter dC330, code 04-010 main motor MOT04-010. Run MOT04-010 for
approximately 5 seconds.
5. Remove the xerographic module, (32-38 ppm) PL 9.22 Item 2 or (45-87 ppm)
PL 9.20 Item 2.
6. Check for the visible bald patch on the developer roll. If the patch is still visible,
check the drives to the developer, GP 7.
– Check that the developer assembly has been correctly installed, REP 9.2.
– If the print image is light all over the copy, with no other defects: Perform the follow-
ing:
1. Clean the ROS window, refer to ADJ 6.1 ROS Window Cleaning Procedure
2. Check the toner cartridge, (32-55 ppm) PL 9.17 Item 4 or (65-87 ppm) PL 9.15
Item 4. Refer to 09-310, 09-390 Low Toner Sensor Failure RAP or the 09-360,
09-361, 09-362, 09-363 Toner Concentration Sensor RAP. Refer to the steps
for the 09-363 fault code.
If the IQ does not improve, then go to the next step.
3. Enter the diagnostics mode or customer tools, then select and run test pattern
15.
The two darkest bands must be of a density that it is difficult to see where the
band ends and the other band begins. If there is a clear difference in the den-
sity of the two bands, then the ROS can be the cause of the problem.
Clean the ROS, Refer to ADJ 6.2 ROS Cleaning Procedure. If necessary install
a new ROS, PL 6.10 Item 4.
– If the problem persists go to the IQ3 Xerographic RAP.
• Lines. Perform the following:
– If there are dark lines in the process direction that are continuous from edge to edge
of the image, install a new xerographic module, (32-38 ppm) PL 9.22 Item 2, (45-87
ppm) PL 9.20 Item 2.
– White lines or deletions in the process direction that are continuous from edge to
edge of the image. Check the following:
Contamination of the scorotron. Refer to IQ3 Xerographic RAP
Damage to the fuser roll. Refer to IQ4 Fuser Module RAP
Spots or marks on the CVT glass. Refer to IQ7 DADH, Document Glass and
Scanner RAP
Image Quality RAPs
IQ2
– White lines in the process direction that are continuous from edge to edge of the
image can be caused by ROS contamination. Perform the following:
1. Print test pattern 5.
2. Remove the xerographic module, (32-38 ppm) PL 9.22 Item 2, (45-87 ppm) PL
9.20 Item 2.
3. Remove the ROS securing screw, refer to REP 6.1 ROS.
4. Push the ROS to the rear of the machine.
NOTE: The ROS will move back approximately 12 mm (0.5 inch).
5. Install the xerographic module.
6. Print test pattern 5.
7. Check the printed test patterns. If the line has moved, perform ADJ 6.1 ROS
Window Cleaning Procedure and if necessary, ADJ 6.2 ROS Cleaning Proce-
dure.
8. Return the ROS to the correct location. Install the ROS securing screw.
– If the problem persists, go to the IQ3 Xerographic RAP.
• Magnification. Refer to IQS 8 Magnification. Go to ADJ 3.2 Magnification Adjustment.
• Marks and Spots. Perform the following:
– Check the original documents for spot and marks.
– Refer to the IQS 6 Copy / Print Defects. Go to the IQ3 Xerographic RAP.
• Misregistration. Perform the following:
– Open the front door, install a cheat in the front door interlock. Run the copies and
observe the jam clearance knob 4b on the front of the registration roll. The knob
must turn / stop while making copies. If the knob turns continuously and does not
stop, install a new registration clutch, PL 8.15 Item 7.
– (65-87 ppm) If the images are displaced from the lead edge by 50mm (2 inches).
Check the exposure lamp ribbon harness, PL 14.15 Item 5 (PJ452 and PJ290) and
scan carriage ribbon cable, PL 14.15 Item 4 (PJ451 and PJ291).
– If the registration is variable after a developer spillage over the registration transport,
install a new registration clutch, PL 8.15 Item 7.
– If the top edge registration is variable after a dC604 Registration Setup. Check that
the ROS securing screw is tight, refer to REP 6.1 ROS.
– For any other registration problem, refer to dC604 Registration Setup.
• Narrow bands. Go to IQ6 Narrow Bands RAP
• Non uniformity. Perform the following:
– Go to IQ3 Xerographic RAP and complete the ROS Checkout.
– Print internal test pattern 12. If the print has a non uniform density defect, install a
new ROS, PL 6.10 Item 4.
– Go to and complete the Developer Assembly Checkout
• Offsetting. A toner image that adheres to the fuser roll or output rolls and transfers to
another area of the print. The repeat intervals for a fuser roll defects are at 110mm for all
speeds.
The repeat intervals for the pressure roll are 110 mm for 32-55 ppm and 126 mm for 65-
87 ppm machine due to the different size of the pressure roll.
August 2007
3-12 WorkCentre 5687 Family