EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Disassembly & Assembly Disassembly Procedures 319
9. Remove the "Lever, Lock, DE" by following the steps below.
(Refer to Figure 4-158.)
9-1. Slide it to the right.
9-2. Bend it toward the center.
9-3. Remove the left end from the installation hole.
9-4. Remove "Lever, Lock, DE" while extracting the flag at the right end 
from the hole in the frame.
Figure 4-158. Lever, Lock, DE Removal
Installation Hole
Step 9-1
Step 9-3
Step 9-2
Flag
Step 9-4