Iq4 Streaks, Smudges, Or Smears Down The Print - Xerox ColorQube 8570 Service Manual

A
Check the Paper Guides for nicks, cuts, or debris. Are the Guides damaged?
Y N
Clean all parts in the paper path.
Replace the Paper Guides:
• Inner Simplex Guide with Predeskew Sensor and Harness
• Lower Inner Duplex Guide (REP 3.2)
• Lower Exit Guide Assembly w/Strip Flag
If the mark shows as vertical line with dull or low gloss surface, replace the Drum Wiper Blade
Assembly (REP 2.17). Does the error persist?
Y N
Troubleshooting complete.
Replace the Drum Maintenance Camshaft
the error persist?
Y N
Troubleshooting complete.
Perform extra purge procedure (Control Panel Menu -> Troubleshooting -> Print Quality
Problems -> Eliminate Light Stripes -> Light Stripes Test). Does the error persist?
Y N
Troubleshooting complete.
Check the Wave Amp and cables.
Release the end of the cable and carefully examine the conductor ends (a magnifier helps) to
see that they are not cracked or torn. If the cable looks good, carefully reinstall it using a ZIF
tool (refer to REP 2.3 for how to use the ZIF tool for unlocking/locking the ZIF cable connector).
NOTE: Failure to properly unlock the connector will damage the cable.
Are the cables secured?
Y N
Reconnect the cables.
Replace the Printhead Assembly (REP 2.3).
Image Quality
IQ3, IQ4
(REP 3.1)
(REP 3.3)
(REP 2.11) and Process Drive (REP 4.13). Does

IQ4 Streaks, Smudges, or Smears Down the Print

Smudges or smears typically result from ink residue in the paper path. Residue can collect on
the rollers, paper guide ribs, or inside the Preheater. Smudges or smears.
Figure 1 Streaks, Smudges, or Smears
Figure 2 Smudges or Smears
October 2012
3-8
Revised, 3rd Revision - Xerox Internal Use Only
ColorQube 8570/8870 Service Manual