Xerox WorkCentre 5790 Series, Service Manual

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May 2013
3-17 Xerox® WorkCentre® 5790 Family
IQ5
Image Quality
IQ5 Print Damage RAP
Use this RAP when the prints have nicks, tears, creases, folds, curled edges or wrinkles.
Ensure IQ1 Image Quality Entry RAP is performed before starting this RAP.
Procedure
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.
Enter Diagnostics, GP 1 . Enter dC606 . Select the internal test pattern 14. Make prints to iden-
tify where the prints are damaged.
Check the paper supply for the following:
• Curled paper in the paper trays, go to Curl Measurement .
– If the paper in trays 1 and 2 has excessive curl install TAG 001 and TAG 002 Tray 1
and tray 2 Lip kit.
– In high humidity environments, If there is excessive curl on paper in trays 3 and 4
install
TAG 111 HCF Heater kit.
Check the paper path, Figure 2 for the following:
• Obstructions.
• Damaged guides and rolls, GP 7 . Pay particular attention to the areas that align with the
damage on the prints. For example, fuser stripper fingers.
• The edges of the paper path for protruding objects.
• Ensure that the paper feed does not skew the paper, go to the appropriate procedure:
– 08-101 Tray 1 Misfeed RAP
– 08-102 Tray 2 Misfeed RAP
– 08-103, 08-113 Tray 3 Misfeed Entry RAP
– 08-104, 08-114 Tray 4 Misfeed Entry RAP
– 08-115, 08-117 Tray 5 Misfeed Entry RAP
• Check that the paper strips from the xerographic module and enters the fuser nip cor-
rectly. If necessary, perform the following:
– If the paper does not correctly strip from the xerographic module, ensure that all the
HT leads on the HVPS PWB are correctly connected, refer to
REP 1.1 .
– If the paper is contacting the upper fuser roll before entering the fuser roll nip, check
that the short paper path is correctly latched and the transfer/detack corotron, (35
ppm)
PL 9.22 Item 8 or (40-90 ppm) PL 9.20 Item 2 , is correctly positioned, ADJ 9.1
Corotron Cleaning.
• Check that the fuser roll stripper fingers are clean.
• If the prints are creased or wrinkled after the fuser module, then install a new fuser mod-
ule, (35-55 ppm)
PL 10.8 Item 1 or (65-90 ppm) PL 10.10 Item 1 .
• Ensure that paper path sensor actuators move freely, GP 7 .
• If the paper is corrugated after passing through the fuser module, install a new tri-roll shaft
assembly,
PL 10.12 Item 8 .
• If the paper is curled after passing through the fuser module, go to Curl Measurement .
• Check the inverter for damage or wear, GP 7 .
• If the paper has a dog ear on the inboard corner, install a rear gravity gate finger kit, PL
10.12 Item 25 .
• Check the duplex and registration transport assemblies for damage or wear and ensure
the jam clearance latch is located correctly.
– If the paper displays wrinkles due to excessive buckle in the duplex or registration
transport, perform
ADJ 8.2 Buckle Timing.
• If the output device suffers from poor stacking, perform the following as necessary:
– Check that the output device is not positioned near an air conditioning or ventilation
output duct. Air flow across the output bins can cause poor stacking.
– 11K-110 2K LCSS Poor Stacking RAP.
– 11J-120 1K LCSS Poor Stacking RAP.
– 11G-171 HVF BM Poor Stacking RAP.
• Remove the output device, then connect a finisher bypass harness, PL 26.10 Item 7 .
Check the paper path through the inverter assembly, PL 10.11 Item 23 .
If the paper has excessive curl after passing through the inverter, install TAG 046 (35-
55ppm), TAG 047 (65-90 ppm) Inverter Decurler Kit or TAG 148 for OCT configured
machines. For machines W/ TAG 046 , W/ TAG 047 or W/ TAG 148 perform ADJ 10.1
Inverter Decurler Adjustment.
If the paper path and the duplex path are good, check that the paper and other media used, is
of the correct weight and size,
GP 20 .
Curl Measurement
Make five singled sided prints. Refer to Figure 1 . If the curl on the print exceeds 13mm (0.5
inch), perform the following checks:
• Check the paper storage and wrapping
• Turnover the paper stack in the paper tray
• Use paper from a new ream
• Install an inverter decurler kit. PL 10.20 Item 1
If the problem continues, go to the IQ4 Fuser Module RAP.