May 2013
3-29
Xerox® WorkCentre® 5790 Family
IQ12
Image Quality
IQ12 Barber Pole Deletions / Developer Leakage RAP
Use this RAP to cure barber pole deletions and developer leakage problems.
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.
•
Check that the machine is level. If the machine is not level, developer can leak from the
developer module.
•
Clean the charge scorotron,
ADJ 9.4
.
•
Clean the transfer/detack corotron,
ADJ 9.1
.
•
(35 ppm) Ensure the scorotron cleaning tool is fully pushed to the back of the xerograph-
ics module.
•
Check and clean the erase lamp,
ADJ 9.4
.
•
Check that the high voltage connections and the PJs on the HVPS are correctly and
securely seated. Refer to
09-060
HVPS Fault RAP.
Procedure
Print the internal test pattern 5,
dC606
. If the barber pole deletions are present, they appear as
shown in
Figure 1
.
These deletions appear when 0.5kg (1.1 lbs) or more of the developer is lost from the devel-
oper module. This represents half of the developer charge. The causes of loss of developer
are:
•
A damaged, (scored or scratched), drum. The drum can be scratched by a mis-adjusted
or bent detack / transfer corotron.
•
A contaminated charge corotron can create an electrostatic ‘hot spot’ on the drum. Con-
tamination can be caused by excessive book copying without having selected the Bound
Original feature on the image adjustment screen.
•
The machine is not level. A 2 degree tilt, front to rear, causes developer to leak out from
the overflow tube in the rear of the developer module, into the waste bottle.
•
The spacing between the developer module and the Xerographics module is incorrect. In
this case, developer spills out at the magnetic brush into the base pan of the machine.
•
A defective developer module. If the magnet separates from the magnetic roll, developer
may spill out of the developer module, along the length of the magnetic roll. Worn devel-
oper bearings can allow developer to leak out the housing at the inboard and outboard
ends.
Remove the xerographics module and examine the drum surface for chips, scores and
scratches. It is important to note that the drum is usually scored at the inboard or outboard end,
in the non-image area. Scores in these areas are as serious as in the image area. The drum
surface is good.
Y
N
Install a new xerographic module, (35 ppm)
PL 9.22 Item 2
or (40-90)
PL 9.20 Item 2
. Dis-
card the remaining developer and install a full developer charge, (65-90 ppm)
PL 9.15
Item 27
or (35-55)
PL 9.17 Item 25
.
Perform the following:
•
Remove the upper left hand cover,
PL 8.10 Item 3
. Run the machine and check for
approximately -350V on the single red wire at the high voltage connection to the devel-
oper module.
Wiring Diagram 11
. If necessary, go to
09-060
HVPS Fault RAP.
•
Ensure there is a good fit between the trickle door at the rear of the developer module and
the trickle tube. Refer to
Figure 2
and
Figure 3
.
•
If there has been a developer spillage into the base pan of the machine, check the devel-
oper module latching. The developer module locates onto two locating pins at the front of
the machine and two locating pins in the rear frame of the machine. Refer to
Figure 3
and
Figure 4
. Ensure the locating pins are clean and perpendicular, (at 90 degrees), to the
machine rear frame.
•
Check for, and remove any excess material round the locating holes on the developer
module. If necessary, apply some plastislip grease,
PL 26.10 Item 8
around the locating
holes to ensure smooth operation. If the developer module still will not latch properly,
install a new developer paddle, (35 ppm)
PL 9.22 Item 14
or (40-90 ppm)
PL 9.20 Item 14
.
•
If a large amount of developer material has been lost, discard the remaining developer
and install a full developer charge, (65-90 ppm)
PL 9.15 Item 27
or (35-55)
PL 9.17 Item
25
. Reset the HFSI developer counter,
GP 17
.
•
If there is still developer leakage, install a new xerographics module, (35 ppm)
PL 9.22
Item 2
or (40-90 ppm)
PL 9.20 Item 2
. At the same time, install a new developer module,
(35-55)
PL 9.17 Item 2
or (65-90 ppm)
PL 9.15 Item 2
.
•
If the customer copies books, instruct them in the use of the Bound Original feature on the
Image Adjustment screen. Also, instruct the customer to use the scorotron cleaning tool,
three times every day.
A
A
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 ...