Epson WorkForce Pro WP4020
Troubleshooting. 4. Problems related to print result or during printing 2
Paper feeding failure
Presumable Cause
• Use of 3rd party media
• Inappropriate position of edge guide
• Foreign object
• Detached parts
• Contamination on LD Roller of Rear ASF / Retard Roller
• Contamination on Pickup Roller
• Contamination on paper feed rollers in Duplex Unit
• Damage to Cassette Assy
• Rear ASF Timing Belt tension failure
• Damage to Rear ASF Assy
Remedy
• Use EPSON-recommended paper
• Set edge guide correctly
• Remove foreign material
• Re-install parts
• Replace Pickup Assy
• Replace Cassette Assy
• Replace Printer Mechanism
• Replace Rear ASF Assy
Abnormal noise
Presumable Cause
• Foreign object
• Insufficient grease
• Damage to gears
Remedy
• Remove foreign material
• Apply an appropriate amount of grease
• Replace gears