LaserJet 4L/ML, 4P/MP Printers
Service Manual

$6.99
LaserJet 4L/ML, 4P/MP Printers<br> Service Manual
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LaserJet 4L/4ML, 4P/4MP Printers Service Manual

This manual contains the necessary information to service the LaserJet 4L/ML, 4P/MP Printers

Contents:

1 Chapter
A detailed matrix of printer features is followed by general information on the four printer models. Specifications, major assembly locations, safety and regulatory information are all included. The chapter ends with a discussion of the service and repair philosophy along with a discussion of the service and repair philosophy along with useful information on obtaining technical help.
2 Chapter
Recommendations pertaining to the physical location of the printer and consumables are followed by general print media specifications (including specifications for paper, envelopes, labels and transparencies).
3 Chapter
This chapter provides the step-by-step installation and setup procedure, along with detailed information on using the Control Panel for each printer model. Sample self tests and printer reset information are also included.
4 Chapter
Turn to this chapter for the information on routine printer maintenance, including consumables and printer cleaning procedures. Paper jam procedures are also included.
5 Chapter
Here you will find the basic theory-of-operation information required to understand the various printer systems and how they function together.
6 Chapter
This chapter contains step-by-step procedures for replacing all the printer's field replaceable units. Assemblies are grouped by physical location in the printer.
7 Chapter

Turn to this chapter for diagnosing and troubleshooting printer problems. Start with the general troubleshooting flowchart referencing the paper path and printer component location diagrams for assistance. Error message tables and image defect samples are followed by engine test and other diagnosticprocedures. The chapter ends with more troubleshooting tools such as an image defect ruler and wiring diagram.
Index

Convenient tool for looking up any field replaceable unit. All parts are sorted both by part number and by part name. Parts are cross-referenced to their corresponding exploded view illustrations.

FORMAT: Scanned Copy
ZIP archive: 10 338 kB

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

  mark bright 2011-05-26 03:26:04  
  Great product. did the trick which always helps. I did watch your video on how you did it just incase i was doing it wrong and found that the video utility didnt look the same as the utility i used ie no Check button so was a bit unsure to start with. But the product is pretty much idiot proof.
  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!

  ayyas khan 2020-12-12 00:13:38  
  Many thanks. Your reset application allowed me to reset my Epson XP-830 to let me get a few more prints while I wait for my new printer to arrive. Great!!!
  josue salcido 2020-04-19 19:43:05  
  Thank you for helping me reset my printer and for the free trial key. You saved my day.
  Morris Gven 2015-02-27 14:36:17  
  Thanks for your advice. I had the printer Epson Pro 4900 attached to the network. Once I used the USB connection everything worked great. There were 2 ink channels that I could not clean. After poking around the internet I found discussion of air in the lines. Did an initial charge and now things are working perfectly. Thanks for a great product and tech support. Regards, Morris Gven
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