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This 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 DESCRIPTION
CHAPTER 2. OPERATING PRINCIPLES
CHAPTER 3. TROUBLESHOOTING
CHAPTER 4. DISASSEMBLY / ASSEMBLY
CHAPTER 5. ADJUSTMENT
CHAPTER 6. MAINTENANCE
APPENDIX Provides the following additional information for reference:
• Electric circuits
• Exploded diagram

FORMAT: High resolution PDF document!

Zip archive: PdF document 11 935 kB

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

Jonathan Gadsby	2011-03-20 20:14:38
Worked perfectly 1st time !!!! Thank you, just saved me £100 on a new printer !! 8)

MIZIKE G.

2025-11-14 16:23:29

11-14-2025 - I JUST USED THE DOWNLOADED UTLITY PROGRAM AND BOUGHT THEIR $9.99 CODE FOR PURPOSE OF RESETTING THE INK WASTE COUNTER BULLSHIT ( EPSON ET-4550 SEVERAL YEARS OLD ) WHICH I NEVER HEARD OF UNTIL LAST WEEK WHEN THE PRINTER WOULDN'T DO ANYTHING BUT TELL ME TO CONTACT EPSON. LOL- NOPE - CHAT GTP GAVE ME THE INFO FROM HERE, USED IT AND WORKED - TOOK ABOUT 5 MINUTES - ( I HOWEVER - DIDNT ACTUALLY CLEAN OR EMPTY THE INK WASTE OR WHATEVER - IM HOPING FOR THE BEST, ASSUMING ITS OLD ENOUGH THAT IT HAS DRYED ON ITS OWN. - THIS PART ISNT RECCOMENDED TO MY UNDERSTANDING - BUT ILL FIND OUT I SUPPOSE) BUT LONG STORY SHORT - EAST TO USE DOWNLOADED UTILITY, AND RESET KEY FOR 10 BUCKS WORKED - ABOUT 5 MINUTES OR LESS PROCESS. REAL SHIT - MIZIKE

Kirsty Harrison	2024-02-17 20:14:25
I had a ink reset error even after changing the ink storage, this was so quick and easy to reset! thanks a lot :)

andi ahmad	2019-12-11 06:01:36
my printer blinking red light solve problem help this problem thanks for solve this problem

Sven Struzyna	2012-09-02 13:17:11
Es funtioniert einwandfrei und auch genauso einfach, wie es beschrieben ist. Einfach spitze! Thanks from Germany!!

Quik Drop of Modesto	2019-03-18 18:49:54
It works. Phew! If only I'd found this website earlier.