Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 321
The Pump Unit must be reassembled properly. An 
incorrect assembly may cause malfunction of the printer and 
lower the print quality due to poor pumping.
„Align the five ribs and front side dowel of the Pump 
Unit with the six frame positioning holes.
„Slip the Pump Unit frame under the Guide, Waste 
Ink.
„The sheet should be on the rear side of the printer frame.
Pump Unit Frame Position
Sheet Position





Be sure to refer to Chapter 5 “Adjustment” (p.366) and 
perform specified adjustments after replacing the Box 
Assy., Flushing and the Pump Unit. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3224.2.8.7  Guide, Waste Ink1. Remove Pump Unit. 
(Refer to 4.2.8.6 Box Assy., Flushing / Pump Unit (p316).)
2. Remove the Guide, Waste Ink by following the steps below.
2-1. Push up the Guide, Waste Ink from the printer bottom surface to 
free the dowel from the frame.
2-2. Release the two tabs by pulling toward the rear of printer and then 
remove the Guide, Waste Ink.
Figure 4-162. Guide, Waste Ink Removal
Dowel
Tabs
Step 2-1
Step 2-2
Guide, Waste Ink
Rearward
Forward 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3234.2.8.8  Pump Phase Sensor1. Remove Pump Unit.
(Refer to 4.2.8.6 Box Assy., Flushing / Pump Unit (p316).)
2. Remove the two screws securing the Pump Cover. 
(Refer to Figure 4-163.)
„C.B.P. 3x8: 2 pcs.
3. Remove the Pump Cover in the direction of the arrows. 
(Refer to Figure 4-164.)
Figure 4-163. Screws Securing the Pump Cover
Figure 4-164. Pump Cover Removal
Pump Cover
 C.B.P. 3x8
1
2 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 324 4. Peel off acetate tape.
5. Release tabs securing Pump Phase Sensor and then remove Pump 
Phase Sensor.
Figure 4-165. Pump Phase Sensor Removal
The Shield Plate inside the Pump Cover may come off 
when removing the Pump Cover. If it comes off, install it as 
shown in the illustration below.
Shield Plate
Tab
Tabs
Acetate Tape
Pump Phase Sensor 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3254.2.8.9  Holder, FFC1. Move the Carriadge Unit depending on which Holder, FFC is removed 
with reference to both Figure 4-166 and the table below.
2. Pinch the upper and lower end of the two Harness, Heads and the 
Harness, Head, Intermit with your fingers to make their central parts 
bowed, and release them from the upper and lower tabs of the Holder, 
FFC.
Figure 4-166. Holder, FFC
Figure 4-167. Holder, FFC Removal
Holder, FFC to be removed Carriage Unit position
A ~ B Home position
C ~ E Left end

To prevent the Harness, Heads and Harness, Head, 
Intermit from being bent, bow the Harness, Heads and 
Harness, Head, Intermit little by little.
E
D
C
B
A
Tabs
Holder, FFC 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 326 3. Release the top and bottom tabs of the Holder, FFC, and open the 
Holder, FFC.
Figure 4-168. Holder, FFC Tabs Release4. Release the top tab of the Holder, FFC from the Guide Plate, Tube, and 
remove the Holder, FFC backward.
Figure 4-169. Holder, FFC Removal
2
1 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 327
Check the followings after installing the Holder, FFC.
„Each part should be properly installed in its prescribed 
space of the Holder, FFC.
„Move the Carriage Unit with hand to make sure that the 
Harness, Head does not come off.
„Move the Holder, FFC; B from side to side to make 
sure it moves smoothly. A reinstallation is needed if the 
Harness, Head moves together with the Holder, FFC.
Harness, Head (x2)
Harness, Head, Intermit
Tube, Supply, Ink
Sheet, SUS
Guide Plate, Tube
Sheet, Tube
Y
M
C
MK
K (PK or MK)
LC
LM
LLK 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3284.2.8.10  Holder, FFC; B1. Move the Carriadge Unit depending on which Holder, FFC; B is 
removed with reference to both Figure 4-170 and the table below.
2. Pinch the upper and lower end of the two Harness, Heads and the 
Harness, Head, Intermit with your fingers to make their central parts 
bowed, and release them from the upper and lower tabs of the Holder, 
FFC; B.
Figure 4-170. Holder, FFC; B
Figure 4-171. Holder, FFC; B Removal
Holder, FFC; B to be removed Carriage Unit position
A ~ B Home position
C ~ E Left end

Bend the Harness, Heads and Harness, Head, Intermit 
slowly and carefully so as not to fold them down.
E
D
C
B
A
Tabs
Holder, FFC; B 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 329 3. Release the top tab of the Holder, FFC; B to open the Holder, FFC; B.
Figure 4-172. Holder, FFC; B Tab Release4. Release the top tab of the Holder, FFC; B from the Guide Plate, Tube, 
and remove the Holder, FFC; B backward.
Figure 4-173. Holder, FFC; B Removal
2
1 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 330
Check the followings after installing the Holder, FFC; B.
„Each part should be properly installed in its prescribed 
space of the Holder, FFC; B.
„Move the Carriage Unit with hand to make sure that the 
Harness, Head does not come off.
„Move the Holder, FFC; B from side to side to make 
sure it moves smoothly. A reinstallation is needed if the 
Harness, Head moves together with the Holder, FFC; 
B.
Harness, Head (x2)
Harness, Head, Intermit
Tube, Supply, Ink
Sheet, SUS
Guide Plate, Tube
Sheet, Tube
Y
M
C
MK
K (PK or MK)
LC
LM
LLK