EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Disassembly & Assembly Introductory Information 201
4.1  Introductory Information
This 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  Cautions
The 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.
C H E C K
P O I N T
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.
W A R N I N G
 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.