Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2214.2.3.6  Cover, Printer1.Remove Cover, Side, Left (p216).
2. Remove the two screws securing Plate, P Cover, Left. Then remove 
Plate, P Cover, Left by sliding it to the left side while supporting Cover 
Printer with your hand.
„C.B.S. 3x6: 2 pcs.
Figure 4-23. Plate, P Cover, Left Removal
Follow the steps below when installing Plate, P Cover, 
Left.
1. Insert Plate, P Cover, Left into gap between Cover, 
Rear and main frame.
2. Insert shaft socket hole of Plate, P Cover, Left to 
Cover, Printer shaft (left).
3. Align Plate, P Cover, Left dowel with main frame 
positioning hole.
4. Secure with the two screws.
•C.B.S. 3x6 : 2 pcs.
Shaft of Cover, PrinterShaft Socket Hole
Positioning Hole
Cover, Rear
Dowel
Cover Printer
Plate, P Cover, Left
C.B.S 3x6 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 222 3. Remove Cover, Printer upward by sliding to left side.
Figure 4-24. Cover, Printer Removal
Insert the right shaft of Cover, Printer into the shaft hole 
on Plate, P Cover, Right.
Shaft of Cover, Printer
Shaft Hole
Plate, P Cover, Right
1
2
Cover, Printer 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2234.2.3.7  Cover, Rear1.Remove Cover, Printer (p221).
2.Remove Cover, Side, Right (p217).
3. Remove the three screws securing Cover, Rear and remove Cover, 
Rear upward.
„Shaft, Installation, CR: 2 pcs.
„C.B.S. 3x6: 1 pc.
Figure 4-25. Cover, Rear Removal
Align the two ribs of the Cover, Rear with the two 
positioning holes on theRelease Unit.
Ribs and Positioning Holes
Release Unit
Cover, Rear
Shaft, Installation, CR
 C.B.S. 3x6 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2244.2.3.8  P Cover Open Sensor1.Remove Panel, Front/Panel Unit (p219).
2. Release the two tabs securing P Cover Open Sensor and then release 
the P Cover Open Sensor.
3. Disconnect the connector from the P Cover Open Sensor.
Figure 4-26. P Cover Open Sensor Removal
Tabs
P Cover Open Sensor
Connector 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2254.2.3.9  Rear Cover Sensor1.Remove Paper Guide Assy., M, SP (p215).
2. Remove the screw securing Rear Cover Sensor Unit to the printer frame. 
(Refer to Figure 4-27.)
„C.B.B. 2x10: 1 pc. 
3. Release the tab securing the “Rear Cover Sensor Unit” to the printer frame 
and remove Rear Cover Sensor Unit. (Refer to Figure 4-27.)
4. Disconnect the connector from the “Rear Cover Sensor”.
(Refer to Figure 4-28.)
5. Release the two tabs securing the Rear Cover Sensor” to the holder and 
then remove the “Rear Cover Sensor“. (Refer to Figure 4-29.)
Figure 4-27. Removing the Rear Cover Sensor UnitFigure 4-28. Connector Connecting Status
Figure 4-29. Tabs Securing Rear Cover Sensor
Tabs
 C.B.B. 2x10
Rear Cover Sensor Unit
Rear Cover Sensor
Connector
Tabs 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2264.2.4  Circuit Board RemovalThis section describes steps for removing “C593 MAIN Board“, “Power Supply 
Board”, and each “C593_SUB Board“.4.2.4.1  C593 MAIN Board1.Remove Holder, Roller, Unit (p214).
2.Remove Paper Guide Assy., M, SP (p215).
3. Remove the two screws securing Cover, Harness. (Refer to Figure 4-30.)
„C.B.S. 3x8: 2 pcs.
4. Slide Cover, Harness outward. (Refer to Figure 4-30.)
5. Release all harnesses through the Cover, Harness notch and remove the 
Cover, Harness. (Refer to Figure 4-31.)Figure 4-30. Screws Securing the Cover, Harness
Figure 4-31. Cover, Harness Removal
	


The board used for Stylus 4400/4800 is C593 MAIN Board, 
and CA00 MAIN Board is  used for Stylus Pro 4450/4880/
4880C. The explanation in this section is based on Stylus 
Pro 4400/4800.

Be sure to insert and unplug FFCs vertically. (Inserting/
Unplugging at an angle can damage shorten or disrupt the 
terminals inside the connector and cause damage to circuit 
board components.)Insert Cover, Harness into the two ribs of  Paper Guide, 
Lower. Do not allow any harness to jut out from under the Cover, 
Harness.
Ribs
 C.B.S. 3x8
Cover, Harness
Notch 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 227 6. Remove the four screws securing the PCB Unit and pull the PCB Unit 
toward you.
„C.B.S. 3x6: 4 pcs.
Figure 4-32. Pulling Out the PCB Unit
Be careful not to pull the PCB Unit too hard and stretch the 
harness when performing the following steps.Align the left and right ribs of the PBC Unit with the 
position locators of the frame.
C.B.S. 3x6
C.B.S. 3x6
PCB Unit
Rib and Position Locator
Rib and Position Locator 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 228 7. Disconnect all connectors/harnesses from C593 MAIN Board.Note 1: CN3, CN10, CN55 have only the pattern set and are not mounted connectors.
2: Refer to Figure 4-33 for connector positions.
3: When connecting connectors/harnesses to the C593 MAIN Board, connect 
them in the order shown in Table 4-4.
Figure 4-33. C593MAIN Board Connector Positions Table 4-4. Connectors/Harnesses Connected to C593 MAIN Board
Connection 
Order
Connector 
No.
Color
Number 
of Pins
Connection Socket
1 CN48 - 17 C511_SUB-B Board (CN102)
2 CN51 - 30 C511_SUB-B Board (CN101)
3 CN54 - 30 C511_SUB-B Board (CN100)
4 CN9 - 30 C593_SUB-D Board (CN3)
5 CN7 - 31 C593_SUB-D Board (CN1)
6 CN8 - 31 C593_SUB-D Board (CN2)
7 CN53 - 28 C593_SUB-C Board (CN201)
8 CN52 - 15 C593_SUB-C Board (CN200)
9 CN18 Red 4 PG/PO Motor 
10 CN16 White 4 ASF/Pump Motor
(Relay connector route)
11 CN19 Black 2 Suction Fan (Right, relay connector 
route)
12 CN20 Yellow 2 Suction Fan (Left, relay connector 
route)
13 CN56 Blue 2 Rear Cover Sensor
14 CN15 White 3 CR Motor
15 CN14 Black 3 PF Motor
16 CN1 White 14 Power Supply Board (CN2)
17 CN50 White 2 Heat Dissipation Plate Cooling Fan
18 CN57 White 2 Power Supply Cooling Fan
CN7 CN9CN48
CN57 CN51
CN1
CN8CN54
CN53 CN52CN19
CN20
CN56
CN15 CN14 CN50CN18 CN16 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 229
„The connector number is marked on each connector on 
the board. When connecting the FFCs, match the 
connector numbers with the ones on the board with the 
number printed side of the FFCs facing toward the 
printer rear.
„The wires should be bundled with acetate tapes in three 
places as shown in the figure below to prevent them 
from getting onto the guide rail for the Type-B Board. If 
the wires are not bundled, they may be broken or cut off 
when installing the Type B Board.
Connector Numbers
Acetate Tapes 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 230 8. Remove the screw securing USB connector.
(Refer to Figure 4-34.)
„C.P. 3x6: 1 pc.
9. Remove the two screws securing Cover, Connector, Upper; B and then 
remove Cover, Connector, Upper; B. (Refer to Figure 4-34.)
„C.B.S. 3x10: 2 pcs.
10. Remove the two screws securing Cover, I/F and Grounding Board, I/F 
and then remove Cover, I/F and Grounding Board, I/F.
(Refer to Figure 4-35.)
„C.B.S. 3x6: 1 pc.
Figure 4-34. Cover, Connector, Upper; B Removal
Figure 4-35. Cover, I/F and Grounding Board, I/F Removal
Step 9
C.B.S. 3X10
Step 8
C.P. 3X6
Cover, Connector, Upper; B
USB Connector
Grounding Board, I/F
C.B.S. 3x6
Cover, I/F