HP LaserJet 4

How to Identify and Fix Common Problems ?

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From the Home screen on the product control panel, touch the Setup button. Scroll to and touch the Network Setup menu. Touch the TCP/IP Config menu, and then touch the Manual button. Use the numeric keypad to enter the IP address, and touch the OK button.
Print a Network Configuration Page

On the printer control panel, swipe the display to the left, and then touch Setup ( ). The Setup menu displays. Touch Reports, and then touch Network Configuration Report. A Network Configuration Page prints.

Place the printer near the Wi-Fi router. Open the Setup, Network, or Wireless settings menu, and then select Wireless Setup Wizard. Select the name of your network, and then enter the password to complete the connection.
Select the Start button, then select Settings > Bluetooth & Devices > Printers & scanners . Make sure your printer is turned on and connected. Then select the Add device (or Refresh) button. Please wait a moment while Windows searches for the printers that are connected to the device (locally or wirelessly).
On the printer control panel, press the Wireless button . The wireless menu displays. Press the button next to Settings, scroll to Print Report, and then press OK. Scroll to Configuration Page, and then press OK.
IPv4 is composed of 32-bit address length and is the fourth version of the Internet Protocol (IP). IPv6 is composed of 128-bit address length and is the latest updated version of the Internet Protocol (IP).
In the Devices and Printers window click on Add a printer. Choose “Add a local printer or network printer with manual settings”, then click Next. Select Create a new port and choose Standard TCP/IP Port, then click Next. Under Hostname or IP address: Type in the IP address of the printer you intend to connect to.
HP Smart app (Android, iOS): Open the app, tap your printer, and then tap Printer Information or Network Information to find the IP address. Most printers with a touchscreen display or menu: Open the Wireless Summary or Network Settings menu to find the IP address.
Restart the printer and the computer or mobile device to clear possible error conditions. Restore Wi-Fi setup mode. Most printers with a touchscreen display or menu: Open the Wireless or Setup menu, select Network setup or Settings, and then select Restore Network Settings.
On the printer control panel, press the OK button to display the Home screen. Use the arrow buttons to navigate to and open the following menus: Setup → Network Setup → General Settings. On the General Settings menu, select Show the IP Address, and then select Yes to display the printer`s IP address or host name.
Restart the printer and the computer or mobile device to clear possible error conditions. Restore Wi-Fi setup mode. Most printers with a touchscreen display or menu: Open the Wireless or Setup menu, select Network setup or Settings, and then select Restore Network Settings.
Select the Start button, then select Settings > Devices > Printers & scanners. Under Add printers & scanners, select Add a printer or scanner. Choose the printer you want, and then select Add Device. If you don`t see the printer you want, select The printer that I want isn`t listed.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

LaserJet 4 won't Power Up
ANSWER : I haven’t seen that particular behavior on that model. It either works or it doesn’t. My first choice would be the power supply.

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HP LaserJet 4

Which NIC and NIC F/W download and where find it OKI C511dn
ANSWER : Sorry, the right address: https://mega.nz/#F!oEkA3JKZ!YiWuhQTBl5ym-ilNRPYTaw

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HP LaserJet 4

How to copy a card slot in HP laserjet 4250N
ANSWER : None that I know of, using a computer is likely your best option but I never attempted it.

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HP LaserJet 4

ERROR on HP LJ 4525
ANSWER : Print a Configuration page. That will tell you what size paper Tray 2 thinks it has in it. If it doesn’t have plain letter on the page, then it will ask to print from Tray 1.

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HP LaserJet 4

paper jam
ANSWER : If you remove the fuser (2 screws), look to the left and you’ll see a gear on a metal bracket. That’s the coupling gear. It drives the fuser. You’ll see that it is yellow with teeth missing. You’ll need to replace it. You have to take the formatter assy. to the left of it off, and then there are a few screws holding it in place.

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HP LaserJet 4

LJ 2420dn Sensor Problem
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HP LaserJet 4

hplj 4 stops working after being on for 5 minutes
ANSWER : Those are some strange symptoms. I would kind of suspect the culprit is the DC controller. The accordion jam is another issue. That is caused by the 2 exit rollers. They get glazed from age and aren’t able to push the paper out and it accordions because the fuser is still pushing it out and there’s nowhere for it to go.

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HP LaserJet 4

3×5 cards have started jamming
ANSWER : I just printed the same document on an 8.5×11″ paper, and it printed fine.

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HP LaserJet 4