Iq2 Defects Rap - Xerox WorkCentre 5790 Series Service Manual

Figure 16 Test pattern 19
Image Quality
IQ1, IQ2

IQ2 Defects RAP

Use this RAP to resolve image quality defects.
On a properly registered document, with border erase is either on or off, an image defect (dele-
tion/disturbance within 5 mm of the edge of the sheet is acceptable.
Ensure IQ1 Image Quality Entry RAP is performed before starting this RAP.
Initial Actions
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to GP
death or injury. Moving parts can cause injury.
Check the error log for the following codes: 09-310, 09-390, 09-360, 09-361, 09-362, 09-363. If
any of the codes are displayed, go to the
09-360, 09-361, 09-362, 09-363
Procedure
Refer to the appropriate image quality failure and perform the appropriate action.
• Background. Refer to the
IQ3 Xerographic RAP.
• Bands. Go to the IQ3 Xerographic RAP.
White bands on a grey or dark dusting. Check for developer leakage, refer to
Assembly Checkout.
• Barber pole deletions. A series of finger print deletions that form a pattern like a barber
pole or auger marks. The deletions are repeated at proximately 7 cm and are approxi-
mately 30 degrees to the lead edge throughout a grey or dark dusting. Go to
Pole Deletions/Developer Leakage RAP.
• Beads on print. Clean the following:
– Developer beads hanging from the developer roll and the lower lip,
– The developer roll area, above and in the recesses below the roll,
– The halo guide and the registration guide,
– The drive roll assembly,
Item 5. Refer to Figure
– The duplex paper path (35-55 ppm)
– The base pan of the machine.
Go to IQ3 Xerographic RAP and complete the
Checkout and the Developer Assembly
Improperly seated transfer/detack end block covers, or a misadjusted halo guide can
score the surface of the drum, leading to developer loss and premature xerographic mod-
ule replacement. Perform ADJ 9.4
• Black band. Copies have a black band 1 inch wide from top of the copy. At start print the
scan carriage assembly moves to the right, starts to scan and then pulsates for an inch.
Check the connections on the scanner PWB. Install a new scanner PWB, (W/O
PL 14.20 Item 1 or (W/TAG
• Black image. Check the following conditions:
May 2013
3-10
WARNING
14. Disconnect the power cord. Electricity can cause
09-310, 09-390 Low Toner Sensor Failure RAP or the
Toner Concentration Sensor Failure RAP.
IQS 6 Copy / Print Defects and IQS 2 Background. Go to the
Figure 1.
PL 8.15 Item 9 and under the registration roll cover,
1.
PL 8.22 or (65-90 ppm) PL
Xerographic Module and Short Paper Path
Checkout.
Xerographic cleaning.
150) PL 14.10 Item 1.
Xerox® WorkCentre® 5790 Family
Developer
IQ12 Barber
Figure 1.
Figure 1.
PL 8.15
8.20.
TAG 150)