Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
Received a quick response, material was exactly what it was supposed to be. The service did everything I expected it to do. would use service again.
Text excerpt from page 146 (click to view)
CHAPTER 3. MECHANICAL SYSTEM
III. PURGE UNIT
CAUTION â¢ Do not touch the wiper or caps. â¢ Since waste ink accumulates on the bottom of the purge unit, hold the sides of the purge unit when removing it. â¢ Be careful not to spill the waste ink.
4) Cap the pipe  and the end of the waste ink tube  using the waste ink tube caps .
1. Removing the purge unit 1) Remove the right cover (See page 3-7). 2) Open the front cover, and holding the green part, move the carriage to the center. 3) Remove the tube clamp  and disconnect the waste ink tube from the pipe .