May 2013
3-14
Xerox® WorkCentre® 5790 Family
IQ2, IQ3
Image Quality
Figure 1 Component location
IQ3 Xerographic RAP
Use this RAP to determine the cause of the image quality problem.
Ensure
IQ1
Image Quality Entry RAP is performed before starting this RAP.
Initial Actions
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to
GP 14
. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
WARNING
Follow the service procedure exactly as written. Use of controls or adjustments other
than those specified in this manual, may result in an exposure to invisible laser radia-
tion. During servicing, the invisible laser radiation can cause eye damage if looked at
directly.
Perform the following checks and if necessary, install new components:
•
Check that the photoreceptor fan is working. If the fan is working, air will be drawn into the
air intake. If necessary refer to the
09C
Photoreceptor Fan RAP and the
OF6
Ozone and
Air Systems RAP.
•
(65-90 ppm) Check that the duplex cooling fans are working, refer to the
OF6
Ozone and
Air Systems RAP.
•
Check that the relative humidity sensor is working. Go to the
09-365
Relative Humidity
Sensor Failure RAP.
•
Perform
ADJ 9.4
Xerographics Cleaning.
•
Check the registration / developer bias harness connection, (35-55 ppm)
PL 9.17 Item 6
or (65-90 ppm)
PL 9.15 Item 6
.
Figure 1
.
•
Check that the corotron lead connections to the HVPS are secure,
PL 1.10 Item 5
. If nec-
essary, refer to
09-060
HVPS Faults RAP.
•
Check for loose ground connections. Go to the
01A
Ground Distribution RAP.
Make prints. If the image quality defect is still present perform the procedure.
Procedure
The following components can cause image quality defects. Perform the checks:
•
Xerographic Module and Short Paper Path Checkout
•
Developer Assembly Checkout
•
Fuser Module Checkout
•
ROS Checkout
•
Scanner Checkout
Xerographic Module and Short Paper Path Checkout
•
Check the xerographic module stripper fingers for wear, damage and contamination. If
necessary install a n XRU skids kit,
PL 9.20 Item 19
(40-90ppm),
PL 9.22 Item 21
(35ppm).
•
If there are xerographic module stripper finger marks (three marks/dots/spots that line up
with the xerographic module stripper fingers) on the edge or the body of the prints/copies,
together with some or all of the following symptoms:
–
Toner contamination of the xerographic module stripper fingers and /or star wheels
on the stripper finger arms
–
Broken or missing stripper fingers caused by frequent jam clearances
Halo guide
Developer roll and lower lip
Developer roll area
Transfer / Detack
corotron
Magnetic developer seal
brush
Registration roll
cover
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 ...