Xerox Phaser 3155 User Manual

Phaser 3140/3155/3160 Printer Service Manual5-15
Print-Quality Troubleshooting
Ghosting (1)
There is ghosting at 75.3 mm intervals on 
the whole print. Charge voltage from the 
Power Supply Board to the Print Cartridge is not available due to damaged or dirty 
contacts or a failed Power Supply.
Initial Actions
• Check the connection between the Power Supply Board and Print Cartridge.
• Check the Print Cartridge and Transfer Roller life. 5
Check the Power Supply Board 
installation. Reseat the connectors...

5-16Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Ghosting (2)
There is ghosting at 75.3 mm intervals when printing on card stock or 
transparencies using the manual feeder. When printing on thicker media or 
transparencies, a higher transfer voltage is required. Setting the Paper Type to 
Thick provides a higher voltage level to the Print Cartridge.
Initial Actions
• Check that the Paper Type is set to Thick in the printer driver.
• Verify the paper is within the printer...

Phaser 3140/3155/3160 Printer Service Manual5-17
Print-Quality Troubleshooting
Ghosting (3)
There is white ghosting at 75.3 mm intervals.
Initial Actions
• Verify the paper is within the printer specifications (refer to “Media and Tray 
Specifications” on page 1-16).
Troubleshooting Reference Table Applicable Parts Example Print
■Print Cartridge, PL1.0.12
■Power Supply, PL1.0.1
Troubleshooting Procedure Table Step Actions and Questions Yes No 1 Print the Supplies Information 
Report (page 4-2), and check...

5-18Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Ghosting (4)
There is ghosting at 75.3mm intervals. Fuser operating temperature is too high.
Initial Actions
• Ensure there is no debris in the Fuser.
• Verify the paper is within the printer specifications (refer to “Media and Tray 
Specifications” on page 1-16).
Wa rn i n g
Allow the Fuser to cool before starting the procedure. Troubleshooting Reference Table
Applicable Parts Example Print
■Fuser, PL9.0
Troubleshooting...

Phaser 3140/3155/3160 Printer Service Manual5-19
Print-Quality Troubleshooting
Ve r t i ca l  W h i t e  L i n e s
There are faded or completely non-printed lines along the page in the process 
direction. Possible causes include dust or debris blocking the path between the 
Laser Unit and Print Cartridge, or a build up of debris on the OPC drum cleaning 
blade.
Initial Actions
•Clean the Laser Unit window.
• Ensure there is no dust or debris on the Print Cartridge or Fuser components.
Troubleshooting...

5-20Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Vertical Lines are Curved
When printing, vertical lines are not straight.
Initial Actions
• Cycle printer power.
• If the problem persists, refer to the following procedure.
5
Check the Transfer Roller surface for 
damage.
Is the Transfer Roller surface 
damaged? Replace the 
Trans fer  Rol le r 
(page 8-8). If 
the problem 
persists, go to 
step 6.Go to step 6.
6 Replace the Fuser (page 8-11).
Does the problem persist?...

Phaser 3140/3155/3160 Printer Service Manual5-21
Print-Quality Troubleshooting
Vertical Black Line or Band
There are faded or black lines along the page in the direction of paper travel from 
the leading edge to the trailing edge. This often occurs when the developer roller 
or cleaning blade in the Print Cartridge is damaged.
Initial Actions
• Check the condition of the Print Cartridge.
• Check the surface of the Transfer Roller.
Troubleshooting Reference Table
Applicable Parts Example Print
■Transfer...

5-22Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Horizontal Black Line or Band
There are black lines running parallel 
with the leading edge of the print, 
perpendicular to the direction of the paper travel. This can occur when the high 
voltage contacts to the Print Cartridge are damaged or dirty. Staining of Print 
Cartridge components can also cause horizontal banding.
Initial Actions
• Check the connection between the Power Supply and Print Cartridge.
• Check Print...

Phaser 3140/3155/3160 Printer Service Manual5-23
Print-Quality Troubleshooting
Black/White Spot
Dark or blurry spots appear on the page. If black spots occur periodically, the 
rollers in the Print Cartridge may be contaminated with dust or debris. If faded 
areas or voids occur in a black image at intervals of 75.3 mm, or black spots occur 
elsewhere, check the OPC drum surface.
Initial Actions
• Check Print Cartridge life.
• Ensure there is no debris on the OPC drum of the Print Cartridge....

5-24Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Skew
The printed image is not parallel with both sides of the paper.
Initial Actions
• Determine where the skew is introduced (Tray, Fuser)
• Check for debris in the media path or on the rollers.
5
Print the Supplies Information 
Report (page 4-2) and check the 
Transfer Roller life.
Is the Transfer Roller life expired? Replace the 
Trans fer  Rol le r 
(page 8-8).
Complete.
Troubleshooting Reference Table Applicable Notes...