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This Epson Service Manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer.

This manual consists of 6 chapters and Appendix.

CHAPTER 1. PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.

CHAPTER 2. OPERATION PRINCIPLES
Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3. TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.

CHAPTER 4. DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the product.

CHAPTER 5. ADJUSTMENT
Provides Epson-approved methods for adjustment.

CHAPTER 6. MAINTENANCE
Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.

APPENDIX Provides the following additional information for reference:
• Electrical circuit boards schematics

FORMAT: High resolution PDF document!

Zip archive: 2 149 kB

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We are in business since 2002 and do our best to give our customers perfect service!

Charles Breward	2025-07-11 12:44:59
Thank you for your service. The process was straight forward, thank you.

max alford	2009-01-04 10:57:18
the pro 3800 service adjustment program

Prapan Chulapinyo	2016-11-10 15:46:54
It work great! But it like I\'ve force to buy because I\'ve no option. Price should be lower.

Pierpaolo De Fina	2019-08-14 15:33:44
It works perfectly to make Epson XP-55 chip-free and disable ink levels. Many thanks.

toumi taher	2011-03-31 21:16:54
salut ..... demande de deux key pour la reset countre imprimante epson p 50

Patrick Reynolds	2023-03-26 18:26:17
Just used my Reset Key for Epson XP-700 printer. Worked a treat. Many thanks.

William Koston	2026-01-02 21:49:43
I was almost ready to purchase a new printer and then I stumbled upon this website. The "reset key" worked like a charm, just take it slow and follow the instructions.

ORLANDO MORAELS	2019-02-27 22:39:58
Thank you So Much! I really appreciate your reset utility!