Epson Stylus Pro 4450 - Valve Assy., Head; Tube, Supply, Ink Removal

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Disassembly & Assembly Disassembly Procedures 291
4.2.8.2 Valve Assy., Head
1. Remove the "Carriage Cover".
(Refer to "4.2.4.3 C593_SUB Board" (p234).)
2. Loosen the eight "Coupling Screw, M7"s that secure the "Tube, Supply,
Ink" to remove the "Tube, Supply, Ink" from the "Head Unit".
Figure 4-115. Tube, Supply, Ink Removal
A D J U S T M E N T
R E Q U I R E D
When performing the following work, remove ink out of the
ink route before removing the "Valve Assy., Head". Refer to
Chapter 5 “Adjustment” (p.366) to know how to remove ink.
C A U T I O N
When performing the following steps, pay attention to the
followings:
 Prepare pieces of cloth in case the ink leaks or spatters
around the printer.
 Do not allow dust or foreign matters to get into the
"Tube, Supply, Ink".
 Do not bend the "Tube, Supply, Ink" or damage it with
frame edges.
Coupling Screw, M7
Tube, Supply, Ink
Head Unit