Xerox WC5545F, Service Manual

Page: 1001 / 2320

August 2007
3-11
WorkCentre 5687 Family
IQ2
Image Quality RAPs
IQ2 Defects RAP
Use this RAP to resolve image quality defects.
When border erase is switched off, an image defect 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
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 09-310, 09-390 Low Toner Sensor Failure RAP or the
09-360, 09-361, 09-362, 09-363 Toner Concentration Sensor RAP.
Procedure
Refer to the appropriate image quality failure and perform the appropriate action.
• Background. Refer to the IQS 6 Copy / Print Defects and IQS 2 Background. Go to the
IQ3 Xerographic RAP.
• Bands. Go to the IQ3 Xerographic RAP.
White bands on a grey or dark dusting. A series of finger print deletions and form a pat-
tern like a (barber pole or auger marks). The images are repeated at proximately 7 cm
and at approximately 30 degrees to the lead edge throughout a grey or dark dusting.
Check for developer leakage, refer to Developer Assembly Checkout.
• Beads on print. Clean the following:
– Developer beads hanging from the developer roll and the lower lip, Figure 1.
– The developer roll area, above and in the recesses below the roll, Figure 1.
– The halo guide and the registration guide, Figure 1.
– The drive roll assembly, PL 8.15 Item 9 and under the registration roll cover, PL 8.15
Item 5. Refer to Figure 1.
– The duplex paper path (32-55 ppm) PL 8.22 or (65-87 ppm) PL 8.20.
– The base pan of the machine.
Go to IQ3 Xerographic RAP and complete the Xerographic Module and Short Paper Path
Checkout and the Developer Assembly Checkout.
• Black band. Copies have black band 1 inch wide from top of the copy. At start print the
scan carriage assembly moves to the right, start to scan and then pulsates for an inch.
Check the connections on the scanner PWB. Install a new scanner PWB, (65-87 ppm) PL
14.16 Item 8.
• Black image. Check the following conditions:
– If both the print and the copy are completely black, go to the 06-350 ROS Laser Not
Under Control RAP.
– If only the print is good, but the copy is black, go to the 14-703 to 14-706, 712, 714,
716, 718 Failure To Calibrate Entry RAP and perform the Exposure Lamp Check.
– For other black images, go to the IQ3 Xerographic RAP.
• Blank image. Perform the following:
– Insert a door cheat and make a copy. At the same time use a flashlight and illumi-
nate the photoreceptor between the developer and the xerographic module. Check
the following:
If the copy is completely blank, go to the IQ3 Xerographic RAP.
If the copy has a dark band go to the 06-340 ROS Laser Failure RAP.
If the blank images are additional output. Go to the OF8 Multifeed RAP
– Check the developer drives:
1. Remove the xerographic module, (32-38 ppm) PL 9.22 Item 2 or (45-87 ppm)
PL 9.20 Item 2.
2. Make a visible bald patch on the developer roll by moving the developer brush.
3. Re-install the xerographic module.
4. Enter dC330 code 04-010 main motor MOT04-010. Run MOT04-010 for
approximately 5 seconds.
5. Remove the xerographic module, (32-38 ppm) PL 9.22 Item 2 or (45-87 ppm)
PL 9.20 Item 2.
6. Check for the visible bald patch on the developer roll. If the patch is still visible,
check the drives to the developer, GP 7.
– If 09-060 faults are in the fault history log, go to the 09-060 HVPS Faults RAP.
• Blurred image. Check that the documents are flat on the document glass. Use a new
ream of paper. Check the transfer and detack corotrons wires are secure and taut. If nec-
essary install the following:
– A new transfer / detack corotron, (32-38 ppm) PL 9.22 Item 8 or (45-87 ppm) PL 9.20
Item 2.
– A new xerographic module, (32-38 ppm) PL 9.22 Item 2 or (45-87 ppm) PL 9.20 Item
2.
• Dark prints. Go to the IQ3 Xerographic RAP.
• Deletions. Check the following:
– If the deletions are on the duplex side of a print or copy, go the IQ5 Print Damage
RAP. Also refer to the white lines defect.
– If the deletions are small spots, this can be caused by beads on the image. Refer to
the beads on print defect.
– Go to the IQ3 Xerographic RAP.
• Displaced and fragmented image. Check the following:
– If the machine is lower than 750 metres (2461 feet) above sea level, go to the IQ3
Xerographic RAP.
– If the machine is higher than 750 metres (2461 feet) above sea level, check the
transfer / detack assembly for arcing. If necessary go to dC131 NVM Read / Write
location 09-098 Altitude. Check the value is correct.
– Refer to IQ7 DADH, Document Glass and Scanner RAP. Perform the IQ7 Scanner
Checkout.
– Refer to OF10 Intermittent Failure RAP and perform the Electrostatic Discharge
Checkout.
• Grey images. Dark grey images too dark or light images too light. Go to ADJ 9.2 Image
Quality Adjustment Routine as an initial action. If ADJ 9.2 fails to solve the problem, go to
ADJ 9.5 Optimize Dark and Light Grey Image.
• Light images.
Perform the following: