Missing Nozzle Diagnosis And Repair - Epson Stylus Pro 4000 Field Repair Manual

Stylus Pro 4000 Field Repair Guide
Note: Inspect the printer and media for dust or fiber accumulation. Excessive "dirt" will cause missing
nozzles.
Some Missing Nozzles, one or more colors
1. Check the Printer's components for mechanical problems and "dirt".
1.1 Clean Cap.
1.2 Check Wiper Blade for correct installation and flaws.
1.3 Clean Wiper Blade.
1.4 Clean the Nose of the Print Head.
1.5 Check the Borderless pads for proper installation and dirt.
1.6 Check the Flushing Box for dirt.
2. Puddle the Cap and park the Print Head for 30 minutes.
2.1 Fill the Cap with as much water as possible.
2.2 Park the Printhead on the Cap.
3. Perform 2 cleaning cycles.
3.1 Re-test the Nozzles.
3.2 Repeat step 3 if there is progress.
4. Replace the Print Head.
All Nozzles Missing, One Color Only (The color comes back after a cleaning cycle, but drops
out again)

Missing Nozzle Diagnosis and Repair

Missing Nozzle Diagnosis and Repair
Printer Component, Software Item, LCD Display, Printer Button
4/28/05
Page 121.