HP LaserJet 4

How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

Clean the paper path
  1. From the Home screen, touch the Setup button. Figure : Setup button.
  2. Touch the Service menu.
  3. Touch the Cleaning Page button.
  4. Load plain letter or A4 paper when you are prompted.
  5. Touch the OK button to begin the cleaning process. A page feeds through the product slowly.
Paper Is Jammed inside Printer
  1. Turn off printer and unplug it.
  2. Open scanning unit / cover. Important. …
  3. Check if jammed paper is under print head holder. …
  4. Hold jammed paper firmly in both hands. …
  5. Slowly pull out paper, so as not to tear it. …
  6. Make sure all jammed paper is removed. …
  7. Close scanning unit / cover.
Clean the pickup roller
  1. Unplug the power cord from the product, and then remove the pickup roller.
  2. Dab a lint-free cloth in isopropyl alcohol (or water), and then scrub the roller. …
  3. Using a dry, lint-free cloth, wipe the pickup roller to remove loosened dirt.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Removing Cover on HP 900 series Deskjet
ANSWER : You can find here : http://www.fixyourownprinter.com/posts/59761

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HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

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HP 4250, error 54.1 Remove sealing tape from toner
ANSWER : I am having the same problem as everyone else can someone send me a new link or the pdf

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error message that says " remove shipping lock from black cartridge" even though it has been removed
ANSWER : http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c01760760

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HP 26 vs HP 29 cartridge compatibility
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HP 9040 MFP Error code
ANSWER : bonsoir

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HP 4101MFP Hard Drive Question
ANSWER : To initialize: turn off – Press start and hold down while turning on, release after all three light light, you should see initialize disk hit check, and allow to boot.

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HP LaserJet 4

HP 4250 13.06.00 Fuser output paper stop !
ANSWER : pick up solenoid

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HP LaserJet 4