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May 2013
3-12
Xerox® WorkCentre® 5790 Family
IQ2
Image Quality
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
–
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, (35 ppm)
PL 9.22 Item 2
, (40-90 ppm)
PL
9.20 Item 2
.
3.
Remove the ROS securing screw, refer to
REP 6.1
.
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:
1.
Go to
dC131a
NVM tables and refer to the chain 8 table and check that the buckle
settings are set to default for 08-152, 08-169, 08-170, 08-171 and 08-172. Increase
the values in increments of 10 until the problem is resolved.
2.
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
(35-55 ppm),
PL 8.17 Item 7
(65-90 ppm).
3.
If the registration is variable after a developer spillage over the registration transport,
install a new registration clutch,
PL 8.15 Item 7
.
4.
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.
5.
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 35-55 ppm and 126 mm for 65-
90 ppm machine due to the different size of the pressure roll.
Perform the following:
–
Check that the fuser roll is cleaned and lubricated by the fuser web. Go to
IQ4
Fuser
Module RAP
–
Check the fuser web motor, refer to the
10A
Fuser Web Motor RAP
•
Part images and missing images. Go to
05C
Document Size Sensor Failure RAP.
•
Print damage. Go to the
IQ5
Print Damage RAP.
•
Repeat image defects. Perform the following:
–
If the distance between repeated defects in the process direction on A3
(11X17inches) printed images is 264 mm, install a new xerographic module, (35
ppm)
PL 9.22 Item 2
or (40-90 ppm)
PL 9.20 Item 2
.
–
If the repeated distance between defects in the process direction is 110mm (35-
55ppm) or 126mm (65-90ppm), go to the
IQ4
Fuser Module RAP.
–
If the repeated distance between defects in the cross process direction is 90mm and
80mm (3.54 and 3.15 inches) that line up with the xerographic module stripper fin-
gers, go to the
IQ3
Xerographic RAP and perform the Xerographic Module and Short
Paper Path Checkout.
–
If there other defects that are repeated in sequential images, install a new xero-
graphic module, (35 ppm)
PL 9.22 Item 2
or (40-90 ppm)
PL 9.20 Item 2
.
•
Residual image. Perform the following:
–
If the repeated residual image on A3 (11X17 inches) paper is 264 mm, install a new
xerographic module, (35 ppm)
PL 9.22 Item 2
or (40-90 ppm)
PL 9.20 Item 2
.
–
If the problem persists, go to the
IQ3
Xerographic RAP
•
Rotated image. Go to the
14A
Scanning Document Size Entry RAP.
•
Scrambled image. Perform the following:
–
Check the connections on the ROS data cable, PJ113 on the single board controller
PWB and PJ122 on the ROS,
PL 3.24 Item 15
. Refer to
Wiring Diagram 12.
–
Check for a loose or missing bias connection to the halo guide,
PL 8.15 Item 23
. A
bad connection can cause arcing and show on the print as a scrambled image.
•
Skew. Refer to the
IQS 5
Skew and the
IQ8
Skew RAP.
•
Skips. Skips are associated with a variation in the relative scan speed of the projected
image and the rotation speed of the photoreceptor.
Refer to the
IQS 6
Copy/Print Defects. Go to the
IQ3
Xerographic RAP
•
Smears. Smears are associated with a variation in the rotation speed of the photorecep-
tor or speed of the paper.
Refer to the
IQS 6
Copy/Print Defects. Go to the
IQ3
Xerographic RAP
•
Smudges. They are caused by the unfused image being disturbed. Go to the
IQ3
Xero-
graphic RAP.
•
Streaks. The result of disturbance either before or after image transfer. Go to the
IQ3
Xerographic RAP.
•
Stretched and distorted images. Perform the following:
–
If the defect is present on Fax, Scan to E-mail or Scan to File, send the job at a
higher resolution. Select fine or super fine resolution.
–
Check for the paper stalling or catching as it passes under the xerographic drum.
–
Check for wear or damage on the transport rolls.
Summary of Contents for WorkCentre 5790 Series
Page 1: ...Xerox WorkCentre 5790 Family Service Manual 708P90298 May 2013 ...
Page 4: ...May 2013 ii Xerox WorkCentre 5790 Family Introduction ...
Page 20: ...May 2013 xviii Xerox WorkCentre 5790 Family Translation of Warnings Introduction ...
Page 22: ...May 2013 1 2 Xerox WorkCentre 5790 Family Service Call Procedures ...
Page 32: ...May 2013 1 12 Xerox WorkCentre 5790 Family SCP 7 Service Call Procedures ...
Page 53: ...May 2013 2 21 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 1 3 3V Return ...
Page 54: ...May 2013 2 22 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 2 3 3V Return ...
Page 56: ...May 2013 2 24 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 3 5V Return ...
Page 57: ...May 2013 2 25 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 4 5V Return ...
Page 59: ...May 2013 2 27 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 5 12V Return ...
Page 61: ...May 2013 2 29 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 6 24V Return ...
Page 62: ...May 2013 2 30 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 7 24V Return ...
Page 63: ...May 2013 2 31 Xerox WorkCentre 5790 Family 01B Status Indicator RAPs Figure 8 24V Return ...
Page 95: ...May 2013 2 63 Xerox WorkCentre 5790 Family 01K Status Indicator RAPs Figure 2 Circuit diagram ...
Page 96: ...May 2013 2 64 Xerox WorkCentre 5790 Family 01K Status Indicator RAPs ...
Page 178: ...May 2013 2 146 Xerox WorkCentre 5790 Family 06 350 Status Indicator RAPs ...
Page 592: ...May 2013 2 560 Xerox WorkCentre 5790 Family 16B 16C Status Indicator RAPs ...
Page 596: ...May 2013 2 564 Xerox WorkCentre 5790 Family 19 409 Status Indicator RAPs ...
Page 698: ...May 2013 3 2 Xerox WorkCentre 5790 Family Image Quality ...
Page 736: ...May 2013 3 40 Xerox WorkCentre 5790 Family IQS 8 Image Quality ...
Page 742: ...May 2013 4 6 Xerox WorkCentre 5790 Family Repairs Adjustments ...
Page 772: ...May 2013 4 34 Xerox WorkCentre 5790 Family REP 3 4 Repairs Adjustments ...
Page 938: ...May 2013 4 200 Xerox WorkCentre 5790 Family REP 9 10 Repairs Adjustments ...
Page 994: ...May 2013 4 256 Xerox WorkCentre 5790 Family REP 11 17 110 Repairs Adjustments ...
Page 1014: ...May 2013 4 276 Xerox WorkCentre 5790 Family REP 11 15 120 Repairs Adjustments ...
Page 1166: ...May 2013 4 428 Xerox WorkCentre 5790 Family REP 14 20 Repairs Adjustments ...
Page 1168: ...May 2013 4 430 Xerox WorkCentre 5790 Family ADJ 3 1 ADJ 3 2 Repairs Adjustments ...
Page 1174: ...May 2013 4 436 Xerox WorkCentre 5790 Family ADJ 4 1 Repairs Adjustments ...
Page 1242: ...May 2013 4 504 Xerox WorkCentre 5790 Family ADJ 14 1 ADJ 14 2 Repairs Adjustments ...
Page 1386: ...May 2013 6 2 Xerox WorkCentre 5790 Family General Procedures Information ...
Page 1524: ...May 2013 6 140 Xerox WorkCentre 5790 Family Fax Tags General Procedures Information ...
Page 1526: ...May 2013 7 2 Xerox WorkCentre 5790 Family Wiring Data ...
Page 1554: ...May 2013 7 30 Xerox WorkCentre 5790 Family PJ Locations Wiring Data ...
Page 1604: ...May 2013 8 2 Xerox WorkCentre 5790 Family Accessories ...
Page 1606: ...May 2013 8 4 Xerox WorkCentre 5790 Family ACC 1 Accessories ...
Page 1610: ...XEROX EUROPE ...