Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 361Routing on the Duct, Air, C
†Route the harness via the tabs on the Duct, Air, C
Figure 4-229. Routing on Duct, Air, C_1†Bundle the harnesses and secure them to the shaft shown in the figure 
below with a cable tie.
†Secure the harnesses with the clamp on the Duct, Air, C.
Figure 4-230. Routing on Duct, Air, C_2
TabsTabs

Be careful not to damage or cut the harnesses when cutting 
the cable tie off.
Cable tie
Clamp 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3624.2.11  Disassembly/Assembly Unique to 4-color 
Model (Stylus Pro 4000)4.2.11.1  I/H Left Unit / I/H Lever Sensor (Left) (4-color model)For this reason, route all the eight Tube, Supply, Inks to the left side of the 
main unit, and secure them 2 each to the Connecting Screw, M7s of the ink 
holders for each color.
1. Perform 
Step 1
 through 
Step 19
 in 
I/H Left Unit / I/H Lever Sensor 
(Left)(p296)
.
2. Loosen the Connecting Screw, M7 that secures the Joint, Supply, Ink 
and the Tube, Holder, Ink, and remove the Tube, Holder, Ink from the 
Joint, Supply, Ink.
Figure 4-231. Joint, Supply, Ink Removal_1

When performing the following steps, be careful of the 
points below.
„As ink may leak or splatter, 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.
„Firmly insert Tube, Supply, Ink into receptacles and 
tighten Coupling Screw, M7
O-Ring, Coupling M7
„To prevent from both ink leak and damage on the joint 
screw, be sure to tighten the Coupring 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 • cmTube, Holder, Ink
Joint, Supply, Ink
Connecting Screw, M7
Tube, Holder, Ink 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 363 3. Loosen the Connecting Screw, M7s that secure the eight Tube, Supply, 
Inks and the four Joint, Supply, Inks, and remove the Tube, Supply, 
Inks from the Joint, Supply, Inks.
Figure 4-232. Joint, Supply, Ink Removal_2
„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.
„Firmly insert Tube, Supply, Ink into receptacles and 
tighten Coupling Screw, M7
„To prevent from both ink leak and damage on the joint 
screw, be sure to tighten the Coupring 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
Joint, Supply, Ink
O-Ring, Coupling M7
Connecting Screw, M7
Joint, Supply, Ink
Tube, Supply, Ink 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 364 4. Remove the Connecting Screw, M7 that secures the Tube, Holder, Ink, 
and remove the Tube, Holder, Ink from I/H Left Unit.
Figure 4-233. I/H Left Unit Removal
„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.
M →C → MK → Y
„Refer to Figure 4-233 and properly route Tube, Supply, 
Ink.
„Firmly insert Tube, Supply, Ink into receptacles and 
tighten Coupling Screw, M7
„To prevent from both ink leak and damage on the joint 
screw, be sure to tighten the Coupring 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
Locations where ink tubes are routedCoupling Screw, M7
Tube, Holder, Ink 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 3654.2.11.2  Cover, Front, Right 4 Color (4-color Model)1.Remove Panel, Front/Panel Unit (p219).
2. Remove the four screws that secure the Cover, Front, Right 4 
Color, and remove the Cover, Front, Right 4 Color.
„C.B.S. 3x6: 4pcs.
 
Figure 4-234. Cover, Front, Right 4 Color
 Removal
„When installing the the Cover, Front, Right 4 Color, 
tighten the screws in the order shown in Figure 4-234
„Match the four dowels with the four positioning holes.
1
23
4
Dowels and Positioning Holes 
						

							CHAPTER
5
ADJUSTMENT 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Overview 3675.1  OverviewThis section describes the adjustment procedures necessary after replacing 
certain parts and explains how to perform those adjustment procedures.5.1.1  CautionsBefore beginning the adjustment operation, be sure to confirm the following 
caution items.5.1.2  Advance of AdjustmentWhen replacing or removing any part/unit listed in 5.1.3 The Part/Unit that 
Requires Adjustment, refer to 5.1.4 Adjustment Items classified by Part/Unit 
and perform required operations in proper order without omitting steps.
5.1.3  The Part/Unit that Requires AdjustmentParts/units that require adjustment after being replaced or removed are shown 
in the table below.
Note *  : Adjustment items vary depending on whether NVRAM parameters 
can be backed up or not. 

„
When performing an adjustment, refer to 
5.1.4 Adjustment Items classified by Part/Unit and 
check the corresponding adjustment items and 
execution order.
„
When performing adjustments, thoroughly check the 
cautions shown for the explanation section of each 
adjustment item. Product operations and functions can 
be adversely effected if the adjustment operations are 
performed improperly.
No adjustments necessary“5.3 Basic Adjustment (p387) ”“5.5 Check Results (p436) ”“5.6 Reset Counters (p441) ”“5.7 Installing Firmware (p444) ”
Refer to the required adjustment 
items and adjustment order 
presented in Table 5-2. Required 
Adjustment Items/Execution 
Order
NO
Is the replaced or removed part/
unit listed in Table 5-1. The Part/
Unit that is required Adjustment?
YES
“5.2 Mechanical Adjustment (p376) ”
Update to latest firmware when necessary“5.4 Advanced Adjustment (p430) ”
Table 5-1. The Part/Unit that is required AdjustmentRepair Items (Disassembly/Reassembly Reference Page)
Main Circuit Board*1 (C593 MAIN Board  (p226))
Power Supply Board (p. 233)
Cleaning Unit*2 (p. 316)
Printhead  (p285)
Damper (Valve Assy., Head (p. 291))
AS Mechanical Unit (Printer Mechanism (SP) (p. 242))
ASF Unit (p. 246)
Motor Motor Assy., CR  (p270)
Motor Assy., PF  (p349)
Pump Motor (Mounting Plate Assy., Motor, ASF, SP (p. 259)) 
Motor Assy., PG  (p274)
Sensor Paper Thickness Sensor 
(P_THICK Sensor (0.8) / P_THICK Sensor (0.3)  (p351))
Multi Sensor  (p277)
CR Encoder Sensor  (p280)
Rear Sensor (PE Sensor  (p352))
PF Encoder Sensor  (p357) 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Overview 3685.1.4  Adjustment Items classified by Part/UnitRequired adjustment items and execution order for each part/unit that has 
been replaced or removed is shown in the table below.Note *1 : RP = Replacement with new part
*2 : RM = Removal only
Table 5-2. Required Adjustment Items/Execution Order
Name
Adjustment Item
RP
*1
RM
*2
Ref.
Main Circuit Board

(Backup = O.K.)1 Parameter Backup{---P.409
2 RTC&USB ID&IEEE1394ID
{---P.387
Main Board

(Backup = NG)1 Device ID setting
(Stylus 4450/4880/4880C only){---P.446
2 Initial Ink Charge Flag ON/OFF{---P.408
3 RTC&USB ID&IEEE1394ID{---P.387
4 Head Rank ID{---P.388
5 Rear Sensor AD Adjustment{---P.407
6 Check Nozzle{---P.436
7 Check Alignment{---P.437
8 1000mm Feed Adjustment{---P.407
9 Nozzle Bi-D Adjustment{---P.393
10 Printhead Slant Adjustment (PF){---P.394
11 PG Adjustment{---P.383
12 Nozzle Bi-D Adjustment{---P.393
13 Printhead Slant Adjustment (PF){---P.394
14 Printhead Slant Adjustment (CR){---P.397
15 Multi Sensor Level Adjustment{---P.389
16 T&B&S (Roll Paper){---P.390
17 T&B&S (Cut Sheet){---P.391
18 Platen Position Adjustment{---P.405
19 Multi Sensor Adjustment for Auto 
Nozzle Check{---P.402
20 Auto Uni-d Adjustment{---P.401
Main Board

(Backup = NG)21 Auto Bi-d Adjustment{---P.430
21 Manual Bi-D{---P.431
22 Image Adjustment{---P.439
23 Cutter Pressure Adjustment{---P.392
24 Writing MAC Address{---P.447
Main Board

(Backup = NG)1 Erasing Firmware{---P.445
2 Installing Firmware{---P.445
3 Selecting “4-colors”{---P.445
4 Device ID setting
(Stylus 4450/4880/4880C only){---P.446
5 Initial Ink Charge Flag ON/OFF{---P.408
6 RTC&USB ID&IEEE1394ID{---P.387
7 Check Alignment{---P.437
8 1000mm Feed Adjustment{---P.407
9 Nozzle Bi-D Adjustment{---P.393
10 Printhead Slant Adjustment (PF){---P.394
11 PG Adjustment{---P.383
12 Nozzle Bi-D Adjustment{---P.393
13 Printhead Slant Adjustment (PF){---P.394
14 Printhead Slant Adjustment (CR){---P.397
15 Multi Sensor Level Adjustment{---P.389
16 T&B&S (Roll Paper){---P.390
17 T&B&S (Cut Sheet){---P.391
18 Platen Position Adjustment{---
P.405
19 Multi Sensor Adjustment for Auto 
Nozzle Check{---P.402
20 Auto Uni-d Adjustment{---P.401
21 Auto Bi-d Adjustment{---P.430
22 Manual Bi-D{---P.431
23 Image Adjustment{---P.439
24 Cutter Pressure Adjustment{---P.392
25 Writing MAC Address{---P.447
Table 5-2. Required Adjustment Items/Execution Order
Name
Adjustment Item
RP
*1
RM
*2
Ref. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Overview 369Cleaning Unit 1 Reset When Cleaning Unit Change{---P.443
Print Head 1 CR Timing Belt Tension Adjustment{{P.376
2 CR Encoder Sensor Position 
Adjustment{{P.382
3 Cleaning{---P.412
4 Head Rank ID{---P.388
5 Check Nozzle{---P.436
6 Check Alignment{{P.437
7 Nozzle Bi-D Adjustment{{P.393
8 Printhead Slant Adjustment (PF){---P.394
9PG Adjustment{---P.383
10 Nozzle Bi-D Adjustment{{P.393
11 Printhead Slant Adjustment (PF){---P.394
12 Printhead Slant Adjustment (CR){---P.397
13 Auto Uni-d Adjustment{---P.401
14 Auto Bi-d Adjustment{---P.430
15 Manual Bi-D{{P.431
16 Image Adjustment{{*3
17 Colorimetric Calibration (Color ID){---P.414
18 Reset When Printhead Change{---P.442
Table 5-2. Required Adjustment Items/Execution Order
Name
Adjustment Item
RP
*1
RM
*2
Ref.
Damper 1 Ink Discharge{{P.411
2 CR Timing Belt Tension Adjustment{{P.376
3 CR Encoder Sensor Position 
Adjustment{{P.382
4 Initial Ink Charge{{P.412
5 Head Rank ID{---P.388
6 Check Nozzle{{P.436
7 Check Alignment{{P.437
8 Nozzle Bi-D Adjustment{{P.393
9 Print Head Slant Adjustment (PF){---P.394
10 PG Adjustment{{P.383
11 Nozzle Bi-D Adjustment{{P.393
12 Printhead Slant Adjustment (PF){---P.394
13 Printhead Slant Adjustment (CR){---P.397
14 Auto Uni-d Adjustment{---P.401
15 Auto Bi-d Adjustment{---P.430
16 Manual Bi-D{{P.431
17 Image Adjustment {{*3
AS Mechanical 
Unit1 NVRAM Back Up and Write{---P.409
2 Destination Setting{---P.434
ASF Unit 1 Reset ASF Counter{---P.442
Motor Assy., CR 1 CR Timing Belt Tension Adjustment{{P.376
2 Nozzle Bi-D Adjustment{{P.393
3 T&B&S (Roll Paper){{P.390
4 T&B&S (Cut Sheet){{P.391
5 Platen Position Adjustment{{P.405
6 Auto Uni-d Adjustment{{P.401
7 Auto Bi-d Adjustment{{P.430
8 Reset When CR Unit Change{---P.442
Table 5-2. Required Adjustment Items/Execution Order
Name
Adjustment Item
RP
*1
RM
*2
Ref. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Overview 370Motor Assy., PF 1 PF Timing Belt Tension Adjustment{{P.378
2 T&B&S (Roll Paper){{P.390
3 T&B&S (Cut Sheet){---P.391
4 Reset PF Motor Counter{---P.441
5 Reset Paper Ejection Switching/PG 
Switching Counter{---P.441
6 Reset Paper Ejection Switching/Reset 
PG Switching Counter{---P.441
Pump Motor 1 Reset When Cleaning Unit Change{---P.443
Motor Assy., PG 1 Reset Paper Ejection Switching/Reset 
PG Switching Counter{---P.441
Paper Thickness 
Sensor1 Paper Thickness Sensor Adjustment
{{P.380
Multi Sensor 1 Multi Sensor Position Adjustment{{P.385
2 Multi Sensor Level Adjustment{{P.389
3 T&B&S (Roll Paper){---P.390
4 T&B&S (Cut Sheet){---P.391
5 Platen Position Adjustment{{P.405
6 Multi Sensor Adjustment for Auto 
Nozzle Check{{P.402
7 Auto Uni-d Adjustment{{P.401
8 Auto Bi-d Adjustment (P.G. 1.2){{P.430
CR Encoder 
Sensor1 CR Encoder Sensor Position 
Adjustment{---P.382
Rear Sensor 1 Rear Sensor Adjustment{---P.407
PF Encoder 
Sensor1 1000mm Feed Adjustment{---P.407
2 T&B&S (Roll Paper){---P.390
3 T&B&S (Cut Sheet){---P.391
4 PF Micro Feed Adjustment Bi-D{---P.435
Table 5-2. Required Adjustment Items/Execution Order
Name
Adjustment Item
RP
*1
RM
*2
Ref.