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!

  Jean Carivenc 2020-07-27 12:59:17  
  Just want to say thank you for the utility that has reset my et 2650 to 80% you're a lifesaver and I be back to get keys when i need them brillient
  Michelee Hamilton 2011-11-21 01:15:27  
  Apart from the first key that I bought that did not arrive, the next 2 keys I bought arrived (I've only used one so far) so I'll save the other one for next time. Thanks very much for your help. Shelley Hamilton.
  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!

  Nadio Bertelli 2018-07-30 09:23:03  
  Thanks for this amazing software! This really helped me in my issue with Epson L200 Printer. More powers to the devs of this software.
  Alexander Molinar 2019-09-27 22:53:46  
  Printer reset with key then failed waste counter back to 100% after test print. Key no longer works!

2Manuals reply:
There is bug in Epson Photo 1390, 14000, 1410 firmware that put waste counter overflow back again after reset. This problem can be solved by updating printers firmware. Here is step by step manual how to fix it - www.2manuals.com/1400fw_update.php
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