Xerox COLORQUBE 8570, Service Manual

Page: 173 / 433

October 2012
3-23 ColorQube 8570/8870 Service Manual
IQ16, IQ17
Image Quality Xerox Internal Use Only - Revised, 3rd Revision
IQ16 Repeating Print Defects
Repeating defects typically result from debris or damage to an imaging component. The inter-
val between the defect can reveal the affected component.
Figure 1 Repeating Print Defects
Initial Actions
1. Check that supported media is being used.
2. Print several test prints as a sample.
3. Measure the interval between defects and note their position.
Troubleshooting Reference
Applicable Parts (Chapter 5 - Parts List)
• Drum Assembly, PL 2.1 Item 4
• Transfix Roller, PL 2.1 Item 14
Procedure
Repeating defects that occur every 11.6 cm (4.58 in.) are caused by the Transfix Roller. Clean
or replace the Transfix Roller (
REP 2.13 ) as needed. Does the error persist?
Y N
Troubleshooting complete.
A repeating defect that has a different Y position on each page, but has the same X position
indicates a defect on the Drum. Clean the Drum. Does the error persist?
Y
N
Troubleshooting complete.
Replace the Drum Assembly ( REP 2.4 ).
IQ17 White Stripes (Pinstripes)
White striping appears as a series of evenly-spaced pinstripes approximately 0.7 mm (0.03 in.)
apart. This indicates a malfunction in the X-Axis Drive. This can cause vertical lines to be wavy.
Initial Actions
1. Check that supported media is being used.
2. Print the Light Stripes Test print (Control Panel Menu -> Troubleshooting -> Print
Quality Problems -> Eliminate Light Stripes -> Light Stripes Test).
3. Print several solid-fill test prints as a sample.
Troubleshooting Reference
Applicable Part (Chapter 5 - Parts List)
• Preheater and Deskew Assembly, PL 2.1 Item 20
• Lower Inner Duplex Guide, PL 3.1 Item 2
• Upper Duplex Guide with Solenoid, PL 3.1 Item 5
• X-Axis Motor, PL 4.1 Item 11
Figure 1 White Stripes (Pinstripes)
Figure 2 White Stripes