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This Epson R320, PMD770 Service Manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer.

This manual consists of 4 chapters and Appendix.

CHAPTER 1. TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.

CHAPTER 2. DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the product.

CHAPTER 3. ADJUSTMENT
Provides Epson-approved methods for adjustment.

CHAPTER 4. 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:
• Electric circuits
• Exploded diagram

FORMAT: High resolution PDF document!

Zip archive: PdF document 12 023 kB

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

sds dasd	2020-09-01 20:03:11
THANK YOU, THANK YOU.. worked like a charm. now I can finish my school project. workforce 630 Epson

Christopher Redding	2021-03-28 22:33:24
Epson stylus DX7400 stopped working with E light. Reset using free trial key and now works again. Thank you.

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!

John Phillip Dandal	2019-08-20 03:47:03
Easy to use, but quite the rip off. Why can't it just be a free utility?

John Fisher	2010-10-12 12:16:35
Thanks soooooo much !!!!! thought my printer was dead until i downloaded the reset utility and got my key. Process over and printer working in minutes. Saved the cost of a new printer. will recommend to anyone and use again if needed, as the service was 5 star plus.