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!

  Ray Lloyd 2011-08-01 22:52:57  
  I was a bit too quick to get going and installed the key into the wrong printer; hence I had to purchase another key! Anyway, the second one worked a treat and I thank you for your efforts, even if it did cost me $19.98! Raymondo
  kumar tulva 2013-03-03 15:40:02  
  its vary fast and it is lenthi process, I required to rectify my printer
  Omar Tamimi 2023-09-18 19:50:57  
  It actually worked for me, the printer is working and ready to go! Cheers from Palestine!
  Gilang indonesianus 2006-08-30 13:40:48  
  i need refurbished software & adjusment service for my epson c67 stylus series !thanks my e_mail :Gieabsolute@yahoo.com
  Paul Jumbo 2019-04-19 18:47:57  
  I had Epson WF-2650 and it wasn't printing fully, skipping lines, even though colors were full.
I did a lot of cleaning, head cleaning, put new cartridge but no luck. I did some head cleaning using glass cleaner and syringes as shown on various youtube video.
After that, my printer didn't recognize two of the cartridges. I tried everything, cleaning contacts etc, nothing worked.

I was finally going to buy new cartridges however stores were closed today so I decided to look for chip-resetting tool but nothing good was available locally.

I came across this WIC reset utility and was really skeptical if it will work. I took the chance, bought the key, used the tool to reset firmware to chipless firmware, it was successful at the first go.
At this point, printer showed all ink levels 100%. I printed a test page and it came out perfect.
To make it even more interesting for me, I live in Europe and during one of the trip, I bought two sets of XL cartridges for this same model but printer didn't recognize in the past and I was going to throw them since these were no good for my EU model. I tried these again after chip reset firmware and voila, they works too.

I am amazed at the propaganda of these printer manufactures that even original printer cartridges from US didn't work on the model here in EUROPE, these used to fit perfectly but printer wouldn't recognize however, now they works too.
Today, I was almost ready to trash my 2.5 yr old and not much used printer but after a lot of trying and finally using WIC reset utility, the printers works like new and saved me a lot!

These were the best 20 CHF/USD I spent today!
Thank you very much and I don't need to worry about relying on a hardware chip-reset tool. I will now be able to use US model cartridges and re-fill i like without having to worry. I even printed some photos using this same printer on photo paper today and printer did an excellent job.
  AILY ARELLANO 2019-09-30 03:37:52  
  Wow, this software really works! I was very reluctant to purchase the reset key, but after taking a few minutes to read all of the instructions and figuring out how to prepare the printer and computer...it was a breeze. Thank you for saving my printer!
  bellaoui ahmed 2010-02-24 02:16:45  
  r 280 epson cx 7300 service manuals epson adjustment programs
  Edward Gilbert 2018-11-19 15:59:47  
  Double thanks John, I now have a working printer. It was so quick and easy I thought it hadn't done anything, then I tried it... Best regards, Richard
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