Epson 4880 C Service Manual

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 261
Install Mount Assy., Plate, Motor, ASF, SP following the 
steps below.
1. Combination Gear 12, 22.4 may fall from the Mount 
Assy., Plate, Motor, ASF, SP when removing it. If this 
happens, properly install the gear as shown below.
2. Install Mount Assy., Plate, Motor, ASF, SP in a way that 
avoids interference between Combination Gear 12, 
22.4 and Spur Gear, 18.Combination Gear 12, 22.4Spur Gear, 18...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 262
5. Tighten screws so that there are no gaps at the locations 
listed below.
•Between frame and Heat Dissipation Plate, Motor, 
ASF.
•Between frame and Mount Assy., Plate, Motor, ASF, 
SP.





Be sure to refer to Chapter 5  “Adjustment” (p.366) and 
perform specified adjustments after replacing the Mount 
Assy., Plate, Motor, ASF, SP.
C.B.S. 3x6
Confirm close fit of 
components
Heat...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2634.2.6.4  ASF Phase Sensor1.Remove Cover, Side, Left (p216).
2. Remove the four screws securing Cover, Motor, PF and then remove 
Cover, Motor, PF in the upward direction while avoiding the Roller, PF. 
(Refer to Figure 4-72.)
„C.B.S. 3x6: 4 pcs.
3. Rotate Lever, Hopper, Release with hand and align the Wheel, Detector 
notch with the ASF Phase Sensor detection section.
(Refer to Figure 4-73.)
Figure 4-72....

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 264 4. Use a tool such as a precision screwdriver to press down on and release 
the hook securing the Wheel, Detector, and remove the Wheel, 
Detector. (Refer to Figure 4-74.)
5. Disconnect the connector from the ASF Phase Sensor.
(Refer to Figure 4-75.)
6. Release the two tabs securing the ASF Phase Sensor and remove the 
ASF Phase Sensor.
(Refer to Figure 4-75.)
Figure 4-74. Wheel, Detector Removal
Figure...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2654.2.6.5  ASF Paper Sensor1. Remove PCB Unit. (Refer to 4.2.4.1 C593 MAIN Board (p226).)
2. Release ASF Paper Sensor harness from clamp.
3. Release the two tabs securing ASF Paper Sensor and then release ASF 
Paper Sensor.
4. Disconnect connector from ASF Paper Sensor.
Figure 4-76. ASF Paper Sensor Removal
ClampHarness
ASF Paper Sensor
Connector 

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2664.2.7  Carriage Mechanism4.2.7.1  Carriage Unit1.Remove Scale, CR (p281).
2.Remove C593_SUB Board (p234).
3. Remove the two screws that secure the Ink Tube Unit. 
(Refer to Figure 4-77.)
„C.B.P. 3x12: 2 pcs.
4. Tilt the Ink Tube Unit backward to release the three tabs securing its 
bottom ( ), and then lift and remove the Ink Tube Unit( ).
(Refer to Figure 4-78.)Figure 4-77. Screws Securing Ink Tube Unit...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 267
When installing the Ink Tube Unit, be sure to check the 
followings.
„Release the Belt, CR tension (Refer to 4.2.7.2 Motor 
Assy., CR (p270).), and sandwich the Belt, CR with the 
Carriage Unit and the Ink Tube at between the two 
red lines marked on the reverse side of the belt. If the 
belt is sandwiched at the right position, a bending will 
appear between the two red lines.  
„Do not get harnesses...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 268 5. Remove the Tension Spring, 3.81 from the hooks of both the Head Unit 
and the Lever, Inclination. (Refer to Figure 4-79.)
6. Remove the three screws and the washer that secure the Lever, 
Inclination to the Carriage Unit to remove the Lever, Inclination. 
(Refer to Figure 4-79.)
„C.B.P. (P2) 3x12: 2 pcs.
„C.B.P. 3x8 (+washer 3.0x0.5x8):1 pc.
7. Remove the screw securing the Head Unit to the Carriage...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 269 10. Set the CR SUS PLATE SUPPORT TOOL on the both sides of the 
Carriage Unit as shown in Figure 4-82.
Place the CR SUS PLATE SUPPORT TOOL with the left end of its front 
tab set on the Shaft, Front and the right end of its rear hook set on the 
Shaft, Rear, and then install them in a twisting motion as shown in Figure 
4-82. 
11. Remove the Carriage Unit by following steps below.
11-1. Pull the Carriage...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2704.2.7.2  Motor Assy., CR1.Remove Cover, Side, Left (p216).
2.Remove Cover, Side, Right (p217).
3. Disconnect the connector from the Motor Assy., CR.
4. Slide carriage to the center of the printer. 
(Refer to 4.2.4.3 C593_SUB Board (p234).)
5. While pushing up Lever, Lock, PG, loosen the CR Tension Installation 
screw and release the tension of Belt, CR.
6. Release Belt, CR from the pinion gear of Motor...