Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 311 13. Peel off the acetate tape binding the FFC to release the FFC.
(Refer to Figure 4-146.)
14. Release the four Harness, CSICs and the I/H Lever Sensor (Left) 
harness from the two clamps and the acetate tape.
(Refer to Figure 4-147.)
Figure 4-146. Releasing Harnesses_5
Figure 4-147. Releasing Harnesses_6
Step 13
Acetate Tape
Clamps
Step 14
Acetate Tape 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 312 15. Move Carriage Unit to center of printer.
(Refer to 4.2.4.3 C593_SUB Board (p234).)
16. Remove the two screws securing rear side of I/H Right Unit.
(Refer to Figure 4-148.)
„C.B.S. 3x6: 2 pcs.
17. Remove the two screws securing the front side of I/H Right Unit.
(Refer to Figure 4-149.)
„C.B.S. 3x12: 2pcs.
Figure 4-148. Screws Securing Rear Side of I/H Right Unit
Figure 4-149. Screws Securing Front Side of I/H Right Unit
C.B.S. 3x6
I/H Right Unit
C.B.S. 3x12
I/H Right Unit 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 313 18. Pull the I/H Right Unit forward from the printer following the order below 
while pulling the Harness, CSIC and I/H Lever Sensor (Right) harness 
from the hole in the frame. (Refer to Figure 4-150.)
18-1. To avoid interference of the printer frame hole and I/H Right Unit 
shaft, shift the I/H Right Unit to the left.
18-2. With the right side of the Paper Eject Unit lifted up, pull the I/H 
Right Unit forward from the printer.
19. Pick up and release the two hooks securing the I/H Lever Sensor (Right) 
and then remove the I/H Lever Sensor (Right). (Refer to Figure 4-151.)
20. Disconnect connector from I/H Lever Sensor (Right). 
(Refer to Figure 4-151.)Figure 4-150. I/H Right Unit Removal
Figure 4-151. I/H Lever Sensor (Right) Removal
The four grounding springs on the top of the I/H Right Unit 
make contact with the printer frame, so install the I/H Right 
Unit while lightly holding down the grounding springs so as 
not to deform them.
Grounding Springs
Step 18-1
Shaft and Frame interference
1
2
3
Paper Eject Unit
Pull harness through this hole
Hooks
I/H Lever Sensor (Right)
Connector 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 314 21. Remove the two screws securing Cover, Holder, IC, Right and remove 
Cover, Holder, IC, Right. (Refer to Figure 4-152.)
„C.B.S. 3x6: 2 pcs.
Figure 4-152. Cover, Holder, IC, Right Removal
„When the Ink Lever is installed against the angle set 
location as shown in the illustration, confirm that the two 
holes of Fan Gear, 34 form a line parallel to the bottom 
of Frame, Holder, IC.
„Align the two dowels on holder side with the two 
positioning holes on the Cover, Holder, IC, Right.
(Refer to Figure 4-152.)
Ink Lever
Holes
Parallel Alignment
Angle Set Location
Fan Gear, 34
Frame, Holder, IC
Dowels and Positioning Holes
C.B.S. 3x6
Cover, Holder, IC, Right 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 315 22. Loosen the four Coupling Screw, M7 securing the four Tube, Supply, 
Inks and then disconnect Tube, Supply, Ink from I/H Right Unit.
Figure 4-153. I/H Right Unit Removal
When performing the following steps, be careful of the 
points below.
„Ink may leak or splatter, so have cleaning rags ready and 
prevent ink from getting on the surrounding work area.
„Prevent dust and dirt from getting inside the Tube, 
Supply, Ink.„Confirm that O-Ring, Coupling M7 has been installed.
„The Tube, Supply, Ink has been marked with its color. 
Install while confirming that the mark matches the 
receptacle.
„Use the following order to install the Tube, Supply, Ink 
while routing it to the installation location.
LM (M)→ LC(C) →PK (MK) → LK (Y)
„Refer to Figure 4-153 and properly route Tube, Supply, 
Ink.
„Firmly insert Tube, Supply, Ink into receptacles and 
tighten Coupling Screw, M7.
„To prevent ink leakage and damage on the Coupling  
screw, be sure to tighten the Coupling Screw, M7 with 
the prescribed torque and the tool specified below.
•Tool: Torque Wrench 1.25/1.75 (1277142)
•Tightning torque: 1.25 ( ± 0.25) kgf • cm
O-Ring, Coupling M7
Coupling Screw, M7
Locations where ink tubes are routed
Tube, Supply, Ink 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3164.2.8.6  Box Assy., Flushing / Pump Unit1.Remove Cover, Side, Right (p217).
2.Remove Motor Assy., PG (p274).
3. Move the Carriage Unit to center of printer. 
(Refer to 4.2.4.3 C593_SUB Board (p234).)
4. Remove the screw securing the Box Assy., Flushing.
 (Refer to Figure 4-154.)
„C.B.S. 3x8: 1 pcs.
5. Slide the Box Assy., Flushing to the right and release the rib as shown in 
Figure 4-154 ( ), lift the wast ink pipe upward to pull it out ( ), then 
remove the Box Assy., Flushing while tilting it forward to avoid 
interference with the printer frame ( ).
Figure 4-154. Box Assy., Flushing Removal
When removing the Box Assy., Flushing and Pump Unit, 
ink may leak from the Box Assy., Flushing ink discharge 
port or the Pump Unit waste ink tube. Have cleaning rags 
ready and prevent ink from getting on the surrounding work 
area.„Pass the Box Assy., Flushing waste ink pipe through 
the hole in the bottom of the frame.
„Make sure the Box Assy., Flushing rib is fitted into the 
Induction Duct positioning hole.
1
3
C.B.S. 3x8
2
Waste Ink Pipe
Location of interference
Box Assy., Flushing
RibInduction Duct 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 317 6. Remove the two screws securing the Shaft, Transmission, PG Unit and 
then remove the Shaft, Transmission, PG Unit by pulling it out of the hole 
in the frame. (Refer to Figure 4-155.)
„C.B.S. 3x6: 2 pcs.
Figure 4-155. Shaft, Transmission, PG Unit Removal
Be careful not to scratch the Shaft, Transmission, PG Unit 
gear by bumping it against the frame.„Align Shaft, Transmission, PG Unit positioning hole 
with dowel on frame. (Refer to Figure 4-155.)
„Make sure that the Pump Phase Sensor harness is 
routed over the Shaft, Transmission, PG Unit shaft. 
(Refer to Figure 4-155.)
Dowel and Positioning Hole
C.B.S. 3x6
Harness 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 318 7. While keeping the sheet turned aside, remove Extension Spring, 0.262 
from the tabs of Mount Assy., Plate, Motor, ASF, SP and Lever, Lock, 
DE. (Refer to Figure 4-156.)
8. Pull the Lever, Lock, Planetary toward the outside of the printer, release 
the hook on top and then pull out of the Lever, Lock, DE. 
(Refer to Figure 4-157.)Figure 4-156. Extension Spring, 0.262 Removal
Figure 4-157. Lever, Lock, Planetary Removal
When performing the following steps, be careful of the 
points below.
„Do not lose Extension Spring, 0.262.
„Use care not to pull Extension Spring, 0.262 too much, 
or it may loose the spring force.
„Do not touch the Cleaner, Head or allow it to contact 
other parts. (This could lower print quality due to not 
wiping ink normally.)After installing the Lever, Lock, Planetary, confirm that 
Lever, Lock, DE moves smoothly by the tension of 
Extension Spring, 0.262. (Check three times.)
Cleaner, Head
Sheet
Extension Spring, 0.262
Lever, Lock, DE
Tads
Lever, Lock, Planetary 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & 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 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 320 10. Disconnect the connector from the Pump Phase Sensor from behind the 
printer. (Refer to Figure 4-159.)
11. Free all the harnesses from the U-shaped notch of the Frame, Base, Side, 
Right. (Refer to Figure 4-159.)
12. Remove the four screws securing the Pump Unit. (Refer to Figure 4-160.)
„C.B.S. 3x6: 3 pcs.
„C.B.S. 3x8: 1 pc.
13. Shift the Pump Unit to the right side and disconnect the linkage with 
Combination Gear, 13.6, 28.8. (Refer to Figure 4-161.)
14. Remove Pump Unit toward rear. (Refer to Figure 4-161.)
Figure 4-159. Disconnecting the Pump Phase Sensor ConnectorFigure 4-160. Screws Securing Pump Unit
Figure 4-161. Pump Unit Removal
Connector
Releasing Harnesses
Pump Unit
C.B.S. 3x8
 C.B.S. 3x6
Linkage Location
Combination Gear, 13.6, 28.8