Epson WorkForce Pro WP4020
Troubleshooting. 2. Error is indicated during power-on sequence 3
No ink cartridge error
Occurrence Condition
This error occurs when Ink Cartridge is not installed.
Occurrence Timing
• At power-on
• When printing starts
• Cleaning
• When closing the Front Cover
• During printing
Remedy
Remedy] • Install Ink Cartridge
Front cover open error
Occurrence Condition
This error occurs when Front Cover is open.
Occurrence Timing
• At power-on
• During printing
Remedy
• Close Front Cover
• Replace Front Housing Assy
• Replace Cover Open Sensor
• Replace Main Board