04/2016
3-12
Phaser 4600/4620/4622 Printer Service Manual
IQ10
Revised
3 Image Quality
IQ10 Process Streaks
Extraneous vertical dark lines or bands.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Do not touch the Fuser while it is hot.
Initial Actions
• Check that the paper supply is dry and meets specifications.
• Inspect the paper path for items, such as staples, paper clips, and paper scraps.
• Check that the Drum Cartridge contacts are clean.
• Inspect the media path for contamination or obstruction.
Figure 1 Process streak example
Procedure
Check the media. The media is clean, of the approved type, and free of defects.
YN
Replace the media with approved media from a freshly opened package.
Check the media path for dirt, debris, or toner residue. The media path is clean.
YN
Clean the media path.
Replace the Drum Catridge and reprint the test print. The image contains vertical streaks.
YN
Perform SCP 6 Final Actions.
Remove the Transfer Roller and check for surface contamination or excessive wear. The
Transfer Roller is good.
YN
Replace the Transfer Roller, REP 9.1.
Remove the Fuser. Check for damage or debris on the rollers. The Fuser rollers are good.
YN
Clean or replace as necessary;
• Heat Roller PL 10.11
• Pressure Roller PL 10.11
• Fuser PL 10.10
Check connections between the IP Board and Laser Unit. The connections are secure.
YN
Secure the connections.
Replace the IP Board.
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