Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
DISASSEMBLY & ASSEMBLY Overview 100
Confidential
3.1  Overview
This chapter describes procedures for disassembling the main components of Epson 
Stylus Pro 4900/Epson Stylus Pro 4910.
Be sure to follow the steps when disassembling the unit.
Unless otherwise specified, disassembled units or components can be reassembled by 
reversing the disassembly procedure.
 WARNING
Procedures which, if not strictly observed, could result in personal injury are 
described under the heading “WARNING”.
 CAUTION
“CAUTION” signals a precaution which, if ignored, could result in damage to 
equipment.
 CHECK POINT
Important tips for procedures are described under the heading “CHECK POINT”.
 REASSEMBLY
If the assembly procedure is different from the reversed disassembly procedure, 
the correct procedure is described under the heading “REASSEMBLY”.
 ADJUSTMENT
Any adjustments required after reassembly of components or parts are described 
under the heading “ADJUSTMENT”. Be sure to perform the specified 
adjustments with reference to Chapter 4 “ADJUSTMENT”.
 LUBRICATION
“LUBRICATION” signals that the part needs to be lubricated when replacing or 
maintaining it after disassembling.
3.1.1  Precautions
Before starting the disassembly or reassembly of the product, read the following 
precautions given under the headings “WARNING” and “CAUTION”.
W A R N I N G
 When the Printer Cover is opened, a safety-interlock 
mechanism causes the CR Motor and the PF Motor to stop. 
When the interlock function is disabled, be sure to take safety 
precautions and turn the function back to enabled after the 
operation.
 This printer is equipped with a lithium battery. When handling 
the lithium battery, the following precautions should be 
followed.
• When replacing the battery, replace it only with a specified 
type of battery. Using a different type of battery may cause 
excess heat or explosion. 
Recommended battery: CR2032 (Sony/Panasonic/Maxell)
• Dispose of used batteries according to manufacture’s 
instructions and local regulations. Contact your local 
government agency for information about battery disposal 
and recycling.
• When disposing of the battery, be sure to securely cover its 
(+) end with tape to prevent combustion or explosion.
• Do not recharge the battery.
• Do not use the battery if it is discolored or damaged, or if any 
leakage of electrolyte is observed.
• Do not dismantle, solder or heat the battery. Doing so could 
result in leakage of electrolyte, heat generation, or explosion.
• Do not heat the battery or dispose of it in fire.
• If the electrolyte leaked from the battery contacts with your 
skin or gets into your eyes, rinse it off with clean water and 
see a doctor immediately.