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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 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:
• Connector pin assignments
• Electric circuit boards components layout
• Electrical circuit boards schematics
• Exploded diagram & Parts List

FORMAT: High resolution PDF document!

Zip archive: PdF document 9 416 kB

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

Jean Carivenc	2015-05-08 15:46:00
I did not use the printer Epson Pro 4900 for a long time and even after 5 or 6 powerful manual cleanings for all inks the paper was staying completely white !! I did the Ink Charge and cleaning process described in the soft and after that the machine is working 100% fine In France there is no way to get this software except if you work for Epson !!!

sundar sundar	2014-05-16 09:19:25
I just downloaded and tried your WIC Reset Utility. Since I am running Windows 8.1 I was afraid that it might not work too well. I was WRONG!! Happily it works GREAT on Windows 8.1! I\'m a happy camper!! Just thought I should let you know!! Best regards, sundar

edgar campos	2010-08-05 04:42:26
Thank you for full service Manual!

ann weston

2022-09-01 07:15:35

I bought one reset key and it hasn't even been a month yet and my printer is already telling me that the ink pad needs service. All of these good reviews that I have read on here is the reason i took a chance and purchased a reset key. I have not been able to use my printer at all. I am highly pissed off that not even a month after purchasing the one reset key and my printer is back at it again. I want a refund or to be able to try another reset code. this is a bunch of B.S. REPLY: Waste counters doesn't have any relation to how much time did user used the printer. Waste counters increase when printhead cleaning is performed. One printhead cleaning takes about 3-4% of waste counter. So if user make 25-30 printhead cleanings - the waste ink counters will reach 100% and overflow. Doesn't depend on time you will make this cleanings - in 1 month or in 1 year or in 1 day or in 3 years. Usually when printer is new and using Epson original inks - -there will be no need to make printhead cleanings. After Epson inks finish - users often buy third party inks - they have not so good quality as Epson and may clog printhead more often. So after Epson inks finish - users make printhead cleanings more often - as a result - after 20-30 printhead cleanings - counters overflow. So - try to make printhead cleanings less often. Only ONE thing what does Reset Key - it resets waste ink pads counters to ZERO. Doesn't matter counters will be reset by yourself using Reset key ($9.99) or by Epson Service Center engineer ($50) - the result will be the same - counters will become 0% Conclusion: use high quality inks!

Mervyn Scott	2025-07-24 01:57:20
Instruction videos very helpful, reset key worked great. Thanks.

Robin Pruett	2023-07-13 20:54:29
I was skeptical, like I'm sure we all are when buying something new online, but I simply turned off my Epson Monitor, under maintenance tab, bought the key, turned off my printer, then turned it back and and IT WORKED! Well worth $10.00, just so I don't have to buy another printer.

santosh kadam kadam	2014-05-31 20:14:43
A printer\'s ink pad is at the end of its service life. Please contact Epson Support.-- it worked! thank you

shiju vengad	2009-06-11 16:12:40
Thanks John I figured it out.. I didn\'t read things as well as I should have.. and panicked a bit. The good news is my Epson 1280 printer is up and running again thanks to your manual. George