Epson WorkForce Pro WP4520
Troubleshooting. 4. Problems related to print result or during printing 1
Printing failure
Symptoms
• Printing failure
• Contamination on paper
• Dot missing
• Paper is ejected without printing
Presumable Cause
• Incorrect setting for driver/ panel
• Contamination on CR Scale
• Contamination on Printhead Cover
• Printhead failure
• Dot missing of Printhead
• Contamination on Cap or Wiper of Ink System Unit
• Ink System Unit failure
• PG is narrow
• Damage on PE Sensor Lever
• Damage on PE Sensor
• Damage on APG related parts of Carriage Assy
• APG Lever operation failure
• Connection failure between Decompress Pump Tube and Ink Supply Unit
• Twist or blockade of Decompress Pump Tube
• Decompress Pump Unit operation failure
• Ink Supply Unit operation failure
• Connection failure between Ink Supply Tube and Printhead
Remedy
• Check driver or panel setting
• Replace CR Scale
• Clean Printhead Cover
• Perform cleaning
• Replace Ink Cartridge
• Replace Printhead
• Clean rubber part of Cap
• Replace Ink System Unit
• Adjust PG again
• Replace Printer Mechanism
• Replace PE Sensor Lever
• Replace PE Sensor
• Replace Carriage Assy
• Check the attachment condition of APG Lever
• Check the condition of Decompress Pump Tube
• Replace Decompress Pump Unit
• Replace Ink Supply Unit
• Check the condition of the joint section of Ink Supply Tube