Color Pair Cleaning; Power Cleaning; Ss Cleaning - Epson Stylus pro 7900 Repair Manual

Pro 7900 and 9900 Field Repair Guide 10/6/10
Color Pair Cleaning: User Menu/MAINTENANCE/CLEANING/CLEAN FOR EACH
COLOR
Color pair cleaning is the cleaning method with the most efficient use of ink.
How to use effectively:
1. Print an nozzle check, and identify the color pair with the most missing nozzles.
2. Clean that color pair only.
After the Printer cleans the instructed color pair, it will use the AID Circuitry to determine the appropriate cleaning
levels for any remaining missing nozzles on other color pairs. This method uses less ink than any other.
Power Cleaning: User Menu/Maintenance
The purpose of the Power Cleaning cycle is to remove air from the Negative Pressure Dampers, or air from the
Print Head side of the Dampers.
The Power Cleaning cycle closes the Valves that restrict ink flow from the Ink Bays while simultaneously running the
Cleaning Pump to build a vacuum on the Print Head Nozzle Plate. When sufficient vacuum is created, the Printer
opens the Valves allowing the ink to "fill the vacuum". This technique facilitates the removal of air from the system.
Air in the system causes Nozzle drop out while printing.
Technicians: Use the Power Cleaning cycle after changing Dampers or Print Head.
User: Use the Power Cleaning cycle if Nozzles drop out while printing.
SS Cleaning: Maintenance Mode 1 (Hold the Pause button at power on)
SS Cleaning has a strong ultra sonic component. The Piezo Elements internal to the Print Head are used to attempt
to break up pigment particles that may be clogging the interior of the Print Head.
Use SS Cleaning when a Nozzle can not be cleared through normal cleaning.
Printer Component, Software Item, LCD Display, Printer Button
Cleaning Cycles (Types and Uses) Page 394.