NP 6621 Copier
Service Manual

$9.99
NP 6621 Copier<br> Service Manual
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NP 6621 Copier SERVICE MANUAL

This Service Manual provides basic facts and figures you will need to service the plain paper copier NP6621 in the field.
The NP6621 is designed to enable automated copying work and may be configured with the following accessory; for servicing information on the sorter, ADF, and control card, see their respective Service Manuals:
1. Cassette Feeding Module-B2
2. Cassette Feeding Module-A2
3. Cassette Feeding Unit-K1
4. Paper Deck Pedestal-K1
5. Control Card IV N
6. ADF-E1
7. RDF-F1
8. Stapler Sorter-D1
9. Sorter 10-B1
10. Remote Diagnostic Device II

This Service Manual contains descriptions on the 1-Cassette Feeding Unit-B1 and the 2-Cassette Feeding
Unit-A2.

Note:
The Cassette Feeding Unit-B2, the Cassette Feeding Unit-A2 the cassette feeding Unit K1, the Paper Deck Pedestal-K1 and Remote Diagnostic Device II may not be available for sale in some areas.

This Service Manual is organized as follows:

CHAPTER 1
“General Introduction,” explains the NP6621’s features, specifications, and step-by-step instructions on how to operate the copier.

CHAPTER 2
“Copying Processes,” shows how the NP6621 generates copies while discussing each of the steps involved.

CHAPTER 3
“Operations and Timing,” explains the NP6621’s mechanical system by function and principles behind its electrical system in relation to timing of each operation.

CHAPTER 4
“Mechanical System,” provides instructions on how to disassemble/assemble and adjust the NP6621.

CHAPTER 5
“Installation,” provides points to note when selecting the site of installation and instructions on how to install the NP6621.

CHAPTER 6
‘Maintenance and Inspection,” gives tables of periodically replaced parts and consumables/durables as well as a scheduled servicing chart.

APPENDIX contains a general timing chart, general circuit diagrams, and PCB diagrams.

FORMAT: High resolution PDF document!
ZIP archive: 3 724 kB

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

  bruno andrade 2008-02-20 08:44:45  
  This is good
  K A R Wright 2010-07-28 20:57:29  
  Have to confess I was a bit dubious about spending the money and whether it would be worthwhile, but am pleasantly surprised. Where others charge almost as much for a couple of single pages of info of little use, your manual is the complete one and indeed well worth the cost. Hoping it's going to enable my printer support guy to fully fix the problem with mine and save me having to shell out a LOT more to get another printer. Thanks.
  dimitrije pavicevic 2015-07-26 07:26:13  
  John thank you, on my wife\'s birthday and she was like \"what? you are on your dead printer again, when am here and its my Birthday? \" Then the machine was resurrected WOW!! Thank you John, my wife will have more than me tonight! Spencer
  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!

  JIM LOBLEY 2011-02-11 23:07:12  
  Excellent.!! Worked first time. So easy to use .will certainly buy again.
  leandro condoleo 2011-11-05 23:58:39  
  thats my first time to do that , so i hope working good , i hava a epson artisan 800, im gonna reset.
  vitaliy nikiforov 2007-04-18 05:43:16  
  Just wanted to say THANK YOU for info that I found on your website in this manual I thought my printer was dead in the water and your info bailed me out. You saved me a trip to a repair shop and no telling how much $$!
  Jeff Carbone 2019-05-01 09:36:34  
  I love printing hard copies of material to review. I bought an Epson EcoTank 2650 for the single purpose of never having to worry about how much I have to print.

When I found out about the ink pad and how it basically “fills up” and prevents you from printing, I was pretty pissed off.

I called a service center in my state in the US and they wanted $110 to replace the ink pad and reset it. I searched hard for a solution and when I found this I was really sure this was a scam.

I tried it from one of your affiliates (octoinkjets) and did the trial to reset it to 90% and it worked.

Thank god you guys have this tool. I bought a key for $10 and was done with it. Watched a video on how to clean the ink pads and it was super easy. Now I have a new printer basically.

I can’t believe Epson gets away with this crap. You guys rock!
It really took a leap of faith to try this.
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