Epson DX4 Print head replacement - Cleaning - Installation

This video about the Epson DX4 solvent print head. The head is taken apart and magnified with a microscope to see it's composition and reason for deflection. Also shown is the process to remove/replace a head and brief over a few cleaning and adjustment procedures before and after. Printers: Roland SP 300-v (2 heads) and Roland Soljet Pro II SC-540 (6heads). Be certain the power cord is disconnected before servicing. And press power button 'on' three times to drain residuals. If anyone has more advice, please post.