Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3514.2.9.4  P_THICK Sensor (0.8) / P_THICK Sensor (0.3)1.Remove Cover, Rear (p223).
2. Remove PT Sensor Unit. (Refer to 4.2.9.1 Release Unit (p343).)
3. Disconnect connectors from P_THICK Sensors.
4. Release the three tabs securing P_THICK Sensor, and remove the 
P_THICK Sensors.
Figure 4-212. P_THICK Sensors Removal




Be sure to refer to Chapter 5 “Adjustment” (p.366) and 
perform specified adjustments after replacing or installing a 
P_THICK Sensor.
Tabs
Connector
ConnectorP_THICK Sensor (0.8)
P_THICK Sensor (0.3) 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3524.2.9.5  PE Sensor1.Remove Release Unit (p343).
2. As seen from the printer rear surface, release the two left Extension 
Spring, 8.08s from hooks on the frame. (Refer to Figure 4-213.)
3. Peel off acetate tape securing the FFC. (Refer to Figure 4-213.)
4. Remove the screw securing Holder, Detector, PE.
(Refer to Figure 4-213.)
„C.B.S. 3x6: 1 pc.
5. Slide Holder, Detector, PE to the rear side, release the two hooks of the 
Holder, Detector, PE from the two frame notches and then remove 
Holder, Detector, PE from the frame. (Refer to Figure 4-214.)Figure 4-213. Holder, Detector, PE Removal_1
Figure 4-214. Holder, Detector, PE Removal_2
When performing the following step, be careful not to 
scratch the FFC with the screwdriver.
Hooks
Extension Spring, 8.08
Extension Spring, 8.08
Acetate Tape
 C.B.S. 3x6
Holder, Detector, PE 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 353 6. Release the two tabs securing PE Sensor and remove PE Sensor from 
Holder, Detector, PE.
7. Disconnect FFC from PE Sensor.
Figure 4-215. PE Sensor Removal
Checking front and back of FFC and connect properly.





Be sure to refer to Chapter 5 “Adjustment” (p.366) and 
perform specified adjustments after replacing the PE 
Sensor.
PE Sensor
FFC
Tabs 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3544.2.9.6  Rear Manual Insertion Sensor1.Remove Holder, Roller, Unit (p214).
2.Remove Paper Guide Assy., M, SP (p215).
3. Release Rear Manual Insertion Sensor harness from the two tabs. 
(Refer to Figure 4-216.)
4. Release Guide, Roll Paper along with Rear Manual Insertion Sensor. 
(Refer to 4.2.9.1 Release Unit (p343).)
5. Remove the screw securing Installation Plate, Detector, Rear and 
remove Installation Plate, Detector, Rear. 
(Refer to Figure 4-217.)
„C.B.P. 3x8: 1 pc.
Figure 4-216. Releasing the Harness
Figure 4-217. Installation Plate, Detector, Rear Removal
„Align the two dowels of holder with the two frame 
positioning holes. (Refer to Figure 4-217.)
„Do not let the harness slip in Installation Plate, 
Detector, Rear. (Refer to Figure 4-216.)
Harness
Installation Plate, Detector, Rear
Tabs
Dowels and Installation Holes
 C.B.P. 3x8 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 355 6. Release the two tabs securing Rear Manual Insertion Sensor and remove 
Rear Manual Insertion Sensor from Installation Plate, Detector, Rear. 
(Refer to Figure 4-218.)
7. Disconnect the connector from Rear Manual Insertion Sensor. 
(Refer to Figure 4-219.)
Figure 4-218. Installation Plate, Detector, Rear Removal
Figure 4-219. Rear Manual Insertion Sensor Removal
„Route Rear Manual Insertion Sensor harness as shown 
in Figure 4-219.
„Release the harness tube from the Installation Plate, 
Detector, Rear.
Tabs
Rear Manual 
Insertion Sensor
Tube
Connector 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3564.2.9.7  Paper Eject Phase Sensor1. Pull out I/H Left Unit from printer.
(Refer to 4.2.8.4 I/H Left Unit / I/H Lever Sensor (Left) (p296).)
2. Release the two tabs securing Paper Eject Phase Sensor and remove 
Paper Eject Phase Sensor.
3. Disconnect the connector from Paper Eject Phase Sensor.4.2.9.8  Paper Eject Release Sensor1. Pull out I/H Right Unit from printer. 
(Refer to 4.2.8.5 I/H Right Unit / I/H Lever Sensor (Right) (p305).)
2. Release the two tabs securing Paper Eject Release Sensor and remove 
Paper Eject Release Sensor.
3. Disconnect the connector from Paper Eject Release Sensor.Figure 4-220. Paper Eject Phase Sensor Removal
Figure 4-221. Paper Eject Release Sensor Removal
Confirm that acetate tape securing the Paper Eject Phase 
Sensor harness does not cover the hole of the frame.
Tabs
Paper Eject Phase Sensor
Connector
Acetate Tape
Acetate tape should 
not cover this hole
Tabs
Connector
Paper Eject Release Sensor 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3574.2.9.9  PF Encoder Sensor1.Remove Cover, Side, Left (p216).
2. Remove the two screws securing the PF Encoder Sensor.
„C.P.P. 2.6x8: 2 pcs.
3. Disconnect the connector from the PF Encoder Sensor and then remove 
the PF Encoder Sensor.
Figure 4-222. PF Encoder Sensor Removal
Be careful not to deform or damage the Scale, PF attached 
to the Pulley, Roller, PF.„Align the two dowels of the PF Encoder Sensor with 
the two positioning holes on the Holder,Sensor.
„Do not bend condenser. (Refer to Figure 4-222.)
„After installing the PF Encoder Sensor, confirm that 
the PF Scale is surely inserted into the sensor slit.
„Confirm that the PF Scale is not contacting the sensor.
Dowels
Positioning Holes





Be sure to refer to Chapter 5 “Adjustment” (p.366) and 
perform specified adjustments after replacing the PF 
Encorder Sensor.
PF Scale
PF Encoder Sensor
Connector
Condenser C.P.P. 2.6x8 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3584.2.10  Harness RoutingThis section explains cautions and points in routing the harnesses. Referring to 
this section, route the harnesses correctly. For the sections that is not 
described here, refer to the corresponding diassembly/assembly procedures.4.2.10.1  Harnesses on Left Side of PrinterPG Sensor • Harness
†Should be secured with the parts below.
„Clamp: 1 pc.
„Acetate tape: 1 pc.
Figure 4-223. PG Sensor • Harness
CSIC / IH/ Lever Sensor • Harness
†Should be connected to the C593_SUB-C Board through under the sheet 
as shown in the figure below.
†Should be secured with the parts below.
„Acetate tape: 2 pcs.
Figure 4-224. CSIC / I/H Lever Sensor • Harness
Acetate tape
Clamp
Get through under the sheet
Acetate tapes 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 359Harness, Head / Harness, R1 / Harness, R2
†
Should be routed along the outside of the two Harness, Heads and the 
Harness, Head, Intermit from the  C593_MAIN Board until they reach 
the point where the Harness, R1 and Harness, R2 are connected to the 
C593_SUB-C Board, and there, get the Harness, R1 and Harness, R2 
through under the two Harness, Heads and the Harness, Head, Intermit.
Figure 4-225. Head FFC / Intermit FFC_1
†Secure one end of the sheet to the Guide, FFC with two-sided tape.
Figure 4-226. Head FFC / Intermit FFC_2†Should be secured with the parts below.
„Clamp: 6 pcs.
Figure 4-227. Head FFC / Intermit FFC_3
Harness, Head / 
Harness, Head, Intermit
Connected to C593_SUB-C
Harness, R1 / Harness, R2
Attachment site
Guide, FFC
Clamps 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3604.2.10.2  Harnesses on Right Side of PrinterRouting on the right frame
†Should be secured with the parts below.
„Clamp: 4 pcs.
„Acetate tape: 6 pcs.
Figure 4-228. Routing on the Right Frame
Acetate tapes
Acetate tapes
Clamps