Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Introductory Information 2014.1  Introductory InformationThis chapter describes disassembly/reassembly steps for the Stylus Pro 4400/
4450/4800/4880/4880C.
When no special instructions are given, reassembly is done by reversing the 
order for disassembly steps.
†WARNING
Dangers that could cause injury or death are described after the 
WARNING symbol.
†CAUTION
Items that need prior attention during disassembly/reassembly steps are 
described after the CAUTION symbol.
†CHECK POINT
Hints regarding disassembly steps are described after the CHECK 
POINT symbol.
†REASSEMBLY
Reassembly steps that differ from reverse procedures for disassembly 
steps are described after the REASSEMBLY symbol.
†ADJUSTMENT REQUIRED
Adjustments required following disassembly/reassembly are described 
after the ADJUSTMENT REQUIRED symbol. Refer to Chapter 5: 
Adjustments and be sure to perform the specified adjustments.
Refer to the appendix 
Exploded Diagrams (p.463)
 when disassembly of 
units or components not described in this manual is required.
4.1.1  CautionsThe precautions in the two lists below, WARNING and CAUTION, must always 
be followed during disassembly and assembly. Before starting the disassembly 
work on this product, read and follow these precautions.
	


For disassembly/assembly that is common to 8-color model 
(Stylus Pro 4800/4880/4880C) and 4-color model (Stylus Pro 
4400/4450), instructions are given based on 8-color model. 
For disassembly/assembly that is unique to 4-color model, 
instructions are given as CHECK POINT. When 
disassembling/assembling the 4-color model, refer to 
“ Difference Between 8-color And 4-color Models In 
Disassembly/Assembly (p205) ” to make sure the difference 
between them.


„CR and PF motors are stopped by the cover sensor when 
the Cover, Printer or Paper Guide, Inner Unit is open 
(removed). For safety reasons, do not disable this 
switch.
„This printer is equipped with a lithium battery. Be sure to 
observe the following precautions when handling the 
battery.
•Danger of explosion if the battery is incorrectly 
replaced. Replace only with the same or equivalent 
type recommended by the manufacture.
•Dispose of used batteries according to manufacture’s 
instructions and in compliance with all applicable 
laws. Contact your local government agency for 
information about battery disposal and recycling.
•Be sure to securely cover the (+) end of each battery 
with tape to prevent combustion or explosion when 
disposing.
•Do not recharge the battery.
•Do not use the battery if it is discolored or damaged, 
as well as if any leakage of electrolyte is observed.
•Do not dismantle, solder or heat the battery. By doing 
so could result in explosion, leakage or generating 
heat.
•Do not heat the battery or put it into fire.
•If the electrolyte leaked from the battery gets into 
contact with skin or eyes, rince it with clean water and 
see a doctor immediately.
•The power switch is installed on the secondary side of 
the power circuit, so power is always supplied unless 
the power cord has been unplugged. Unless otherwise 
stated, be sure to unplug the power cord from the AC 
outlet to prevent electric shock and circuit damage 
during servicing. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Introductory Information 202

•Wear gloves while performing disassembly/
reassembly to prevent accidental cuts.
•If ink contacts the eyes, rinse eyes with clean water 
and consult a physician.
•If ink contacts the skin, wash with soap and water. 
Consult a physician if the skin becomes inflamed.
•A lithium battery is installed on the MAIN Board. 
Prevent damage by following the cautions below when 
handling the MAIN board.
‹Avoid putting the MAIN board on conductive 
surface while the battery is installed.
‹When the battery is removed, be sure not to mistake 
the polarity when reinstalling it.

„Ensure adequate work space for performing service/
maintenance.
„The printer should be placed on a stable surface.
„Use care in handling the printer, since it is unusually 
heavy (approx. 40kg).
„Perform ink discharge before removing/replacing parts 
of the ink routing system.  
Refer to 5.1.5 Adjustment Item (p371).
„Carefully install/connect ink routing system parts when 
reassembling after disassembly. (To prevent ink leaks 
due to faulty installation/connection.)
„Use only recommended tools for disassembly, 
reassembly and adjustment.
„Use only specified lubricants and adhesives when 
applying lubrication or adhesive.
„Place a protective sheet on the floor before removing ink 
routing parts because there is the possibility that leaking 
ink could get onto the product or floor where the product 
is set up.

„To prevent static electric damage when handling a 
circuit board, do not touch elements on board with bare 
hands. If handling with bare hands is unavoidable, 
perform work by using required measures, such as 
wearing a grounding strap.
„Carefully confirm the connection ends/directions of 
electric part connectors when reassembling after 
disassembly. This printer uses several FFC (flexible flat 
cable), so use care in properly connecting connectors to 
prevent misalignment or other connection problems that 
can damage PCB elements by short circuits.
„Route cables of electric components along specified 
locations when reassembling after disassembly. 
(Routing cables by other locations may push the cables 
against sharp edges or reduce noise resistance margins.
„When allowing the printer to operate with covers 
removed, be careful not to get hands or clothing caught 
in moving parts.
„Use care to avoid injury when handling the cutter blade 
because it is very sharp.
„The cutter uses a very hard blade that is unusually 
brittle, so do not allow it to be damaged by bumping into 
objects such as metal printer parts.
„When it is necessary to disassemble units or parts that 
do not have written procedures because they are 
controlled as service parts, carefully note installed 
conditions before starting disassembly.
„When loosening screws on the outside of the printer that 
have blue locking seal applied to them, apply new 
locking seal to the screws when reassembling.
„When removing units or parts that are secured with 
acetate (black) or two-sided tape, always secure the 
units or parts with those tapes when reassembling.  
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Introductory Information 203Figure 4-1. Directional View of the Printer
4.1.2  ToolsTools needed for disassembly/reassembly of the Stylus Pro 4400/4450/4800/
4880/4880C are shown below.Note  *  : xx letters differ for each cartridge.
Rear (back side)
Right
LeftTop
BottomFront
Table 4-1. Required Tools
Name
Part Code
Note
(+) Phillips screwdriver #1 Commercial Tool –
(+) Phillips screwdriver #2 Commercial Tool Shaft length of 250mm 
or more is preferred.
Flathead screwdriver Commercial Tool –
Needle nose pliers Commercial Tool –
Tweezers Commercial Tool –
Torque wrench 1.25/1.75 1277142 For coupling screws
Hex wrench Commercial Tool For roll paper feeder
Ink cartridge ICxx24* –
Maintenance Tank PXMT2 –
HEAD EXCHANGE SUPPORT 
TOOL1294672 Used in Print Head 
replacement
CUTTER CAP 1401456 Used in Print Head 
replacement
CR SUS PLATE SUPPORT TOOL 1400023 Used in Carriage Unit 
and Print Head 
replacement
ASF EXCHANGE SUPPORT TOOL1401458 Used in ASF Unit 
replacement 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Introductory Information 2044.1.3  ScrewsScrews used on the Stylus Pro 4400/4450/4800/4880/4880C are shown below.
Table 4-2. Screws
Name
Color
Type
Decorative Screw White Special screw
C.B.S. 3x6 Silver (+) Bind S-tight
C.B.S. 3x6 Silver (+) Bind S-tight
C.C.P. 4x10 Silver (+) Cup P-tight
C.B.P. 3x8 Silver (+) Bind P-tight
C.B.S. (O) 3x6 Silver (+) Bind S-tight with outside toothed lock washers
C.B.S. (O) 3x6 Silver (+) Bind S-tight with outside toothed lock washers
Shaft, Installation, CR Silver Special screw
C.B.S. 3x8 Silver (+) Bind S-tight
C.B.S. 3x10 Silver (+) Bind S-tight
C.B.P. 3x6 Silver (+) Bind P-tight
C.B. 3x4 Silver (+) Bind
C.B.P. (P2) 3x8 Silver (+) Bind P-tight with plane washers 2
C.P.P. 2.6x8 Silver (+) Crosshead Pan P-tight
C.B.P. 3x12 Silver (+) Bind P-tight
Installation Plate, 
Shaft, CRSilver Special screw
C.B.S. (P2) 3x6 Silver (+) Bind S-tight with plane washers 2
C.B. (P1) 3x4 Silver (+) Bind with plane washers 1
C.B.S. 3x12 Silver (+) Bind S-tight
Coupling Screw, M7 White Special screw
C.C. 3x6 Silver C.C. screw
C.B. 3x8 Silver (+) Bind
C.B.B. 2x10 Silver (+) Bind B-tight
C.B. (P2) Silver (+) Bind with plane washers 2
C.P.P. 2.6x6 Silver (+) Crosshead Pan P-tight 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Introductory Information 2054.1.4  Difference Between 8-color And 4-color Models In Disassembly/AssemblyThe Stylus Pro 4800/4880/4880C (8-color model) and Stylus Pro 4400/4450 (4-color model) are equipped with different units or parts depending on how many 
cartridges can be installed.
This chapter describes based on the 8-color model. When disassembling/assembling a 4-color model, refer to the table below to make sure the difference between 
the 8-color model and 4-color model.
Table 4-3. List of Difference in Disassembly/Assembly for Stylus Pro 4400 (4-color model)
Item
Explanation
Stylus Pro 4800/4880/4880C 
(8-color model)
Stylus Pro 4400/4450
(4-color model)
Reference
IH right unit not 
equipped4-color model is not equipped 
with the I/H right unit on the right 
side.“ I/H Right Unit / 
I/H Lever Sensor 
(Right) (p305) ”
The 4-color model is equipped 
with the Cover, Front, Right 4 
Color on the location where the 
8-color model would be equipped 
with the I/H Right Unit.“ Cover, Front, 
Right 4 Color (4-
color Model) 
(p365) ”
Routing of Tube, 
Supply, InkWhile the Tube, Supply, Ink of 
the 8-color model is connected to 
the right ink holder, That of the 4-
color model is routed to the I/H 
Left Unit.“ I/H Left Unit / I/
H Lever Sensor 
(Left) (4-color 
model) (p362) ”
Connecting locations of 
I/H Left Unit and 
Tube, Supply, InkThe connecting locations are 
different between the two types 
of models because all the eight 
Tube, Supply, Inks of the 4-
color model are connected to the 
I/H Left Unit.
CSIC connectors on 
C511_SUB-B Board not 
usedThe 4-color model does not use 
the CN39, CN42, CN43, CN45, 
and CN36 connectors on the 
C511_SUB-B Board.“ Connectors/
Harnesses 
Connected to 
C511_SUB-B 
Board (p236) ” 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2064.2  Disassembly Procedures
„Because this printer is assembled with precise 
measurements in 1/100mm units, disassembly of the 
frame and defined components is prohibited. 
Disassembly/reassembly is limited to parts whose part 
numbers are shown in the Parts List of Chapter 7. 
(Disassembly of parts other than those listed could 
result in problems that cannot be repaired except at the 
factory.)
„Disassembly/reassembly operations for parts/units not 
listed in this Disassembly/Reassembly section cannot 
be performed on-site.  
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2074.2.1  Basic Operations4.2.1.1  Release of the Transport Retaining Lever1. Open Cover, Printer. (Refer to Figure 4-2.)
2. Grasp and pull the Transport Retaining Lever (green) located on the left 
side of the Carriage Unit to release the locked condition of the Carriage 
Unit. (Refer to Figure 4-3.)
3. Close Cover, Printer.
Figure 4-2. Open Cover, Printer
Figure 4-3. Print Head Lock Release
Be sure to engage the Transport Retaining Lever to lock 
the Carriage Unit and install protective equipment the next 
time the printer is transported.
Cover, Printer
Transport Retaining LeverLocked PositionReleased Position 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2084.2.1.2  Carriage Unit Lock Release/Lock Set MethodCARRIAGE UNIT LOCK RELEASE
1. Open Cover, Printer.
2. Push in Holder, Solenoid to release carriage lock.
(Refer to Figure 4-4.)CARRIAGE UNIT LOCK SET
1. Move Carriage Unit to the right until you hear a clicking sound to lock the 
Carriage Unit. (Refer to Figure 4-5.)Figure 4-4. Carriage Unit Lock Release
Figure 4-5. Carriage Unit Lock Set
Holder, Solenoid 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2094.2.2  Consumable Parts/ASF Cassette Removal4.2.2.1  Ink Cartridges1. Open Cover, I/H, Left (Right). (Refer to Figure 4-6.)
2. Lift IC, Lock Lever, Knob, Left (Right) to release Ink Cartridge lock. 
(Refer to Figure 4-6.)
3. Remove the eight Ink Cartridges from the eight Cartridge Slots. 
(Refer to Figure 4-7.)
Figure 4-6. Ink Cartridge Lock Release
Figure 4-7. Ink Cartridge Removal
„Do not touch ink cartridge PCB (IC chip). Doing so could 
disrupt normal operation/printing.
„Do not touch ink filler because ink could leak from the 
ink filler of the ink cartridge.
	


To avoid wrong insertion, the shapes of ink cartridges of 
Stylus Pro 4400/4800 and Stylus Pro 4450/4880/4880C differ.
IC ChipInk Filler
 
Cover, I/H, LeftIC, Lock Lever, Knob, LeftInk Cartridge 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CDisassembly & Assembly Disassembly Procedures 2104.2.2.2  Maintenance Tank (Porous Pad Assy., Ink Eject)1. Insert the fingers of your right hand into the hole of the Maintenance Tank 
and pull while pressing against the lower part of the ink cartridge storage 
box with your right thumb.
2. With attention not to tilt the Maintenance Tank in any direction, remove 
the Maintenance Tank while supporting with your left hand.
Figure 4-8. Maintenance Tank Removal
Do not touch the IC chip while performing the following 
steps. Doing so could disrupt normal operation/printing.
Maintenance Tank
IC Chip