No message in control panel, printer is not working

Might have a control panel bad. Check the Contrast/Density control for the panel.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Turn off the HP LaserJet 2840.


Press and hold down the "Enter" and "*" keys on the printer's control panel, and turn the printer back on.


Hold the "Enter" and "*" keys until you see the "Permanent Storage Init" message on the device control panel. Release the two keys to perform the NVRAM initialization. The NVRAM initialization takes just a few seconds, and the "Permanent Storage Init" message remains on the printer's display until the initialization is complete.


Ensure that the "Ready" message on the printer's control panel is visible. You can now connect the printer to your computer and print your documents. If the "Ready" message is not displayed and your printer is still stuck in a loop, turn off the printer and contact HP customer support (see Resources).

• To reset an HP 2840 from your computer, open the HP Toolbox program, click "Device Settings," click "Service," click "Restore" in the Resets section and then click "OK" to confirm the action and restore the printer to its factory defaults.

Check that you haven't accidentally changed it setup to being off line, you will find this in the devices section of the control panel. If that doesn't work I suggest you re-install the printer software using the setup disk that should have come with the printer. Hope this helps.

Hi,

Check the following steps to fix printer offline error :

Go to system settings and select the 'Printer' option.

Right-click on the printer and enable the 'Use Printer Online' function.

Cancel all the printing jobs till that moment and redo the process.

Sometimes the 'Printer Offline' message occurs due to a 'Job Stuck' issue.

Check all network connections and functions.

Be sure the network interfaces work properly.

Turn the printer off and on to see whether the device is working properly.

Even if your printer's front control panel display has not gone bad yet, it could only be a matter of time.

If your printer has never had its control panel display replaced, you can get a free replacement from Xerox, even if the printer is out of warranty. Just call 877-571-7765 with the serial number of your printer.

I think this is due to a known defect from the factory for many of these panels having a bad soder weld which eventually causes issues with the panel, even if not apparent at first. That was the case I had. Just one day out of the blue my panel went blank, some days its lit with no display others the display is upside down or reading gibberish other times it seems to work fine. I tried looking for a bad soder myself but couldn't find it then later found out there was a soder issue via another post on this site and they will replace this panel free of charge.

The error 1203 error message on the operator panel could indicate a problem with one of the ink cartridges. Please follow the steps given below:

1. Please make sure the All-In-One is powered on.
2. Pull the control panel towards you, and then open the cartridge access door. The print cartridge carrier moves and stops at the loading position.
3. Pull the old cartridges towards you, and then lift them out.
4. With the cartridges out of the printer, shut the access door and the control panel.
5. Power the printer OFF and then back ON.
6. Please check the operator panel to see if the same error has returned or if a new message has appeared.
7. If the message displayed is 1203, there is something wrong with the printer hardware.
If the message now displaying is Cartridge Missing, do the following:

1. Reinstall the cartridges into the printer.
2. Insert the color cartridge in the left carrier. Insert the black cartridge in the right carrier.
3. Push back firmly on the cartridges until they snap securely into place.
4. Close the cartridge access door, and then close the control panel.
5. If the 1203 message is still present on the operator panel, you need to insert one cartridge at a time to determine which cartridge is producing the failure.
6. With one cartridge in the carrier, close the access door and control panel.
7. Please check the operator panel. If the 1203 error is displayed, this cartridge is the defective item. If the Cartridge Missing message is displayed, the second cartridge is producing the failure.
8. Please replace the defective cartridge.

The error 1203 error message on the operator panel could indicate a problem with one of the ink cartridges. Please follow the steps given below:
1. Please make sure the All-In-One is powered on.
2. Pull the control panel towards you, and then open the cartridge access door. The print cartridge carrier moves and stops at the loading position.
3. Pull the old cartridges towards you, and then lift them out.
4. With the cartridges out of the printer, shut the access door and the control panel.
5. Power the printer OFF and then back ON.
6. Please check the operator panel to see if the same error has returned or if a new message has appeared.
7. If the message displayed is 1203, there is something wrong with the printer hardware.
If the message now displaying is Cartridge Missing, do the following:

1. Reinstall the cartridges into the printer.
2. Insert the color cartridge in the left carrier. Insert the black cartridge in the right carrier.
3. Push back firmly on the cartridges until they snap securely into place.
4. Close the cartridge access door, and then close the control panel.
5. If the 1203 message is still present on the operator panel, you need to insert one cartridge at a time to determine which cartridge is producing the failure.
6. With one cartridge in the carrier, close the access door and control panel.
7. Please check the operator panel. If the 1203 error is displayed, this cartridge is the defective item. If the Cartridge Missing message is displayed, the second cartridge is producing the failure.
8. Please replace the defective cartridge.

The error 1203 error message on the operator panel could indicate a problem with one of the ink cartridges. Please follow the steps given below:

1. Please make sure the All-In-One is powered on.
2. Pull the control panel towards you, and then open the cartridge access door. The print cartridge carrier moves and stops at the loading position.
3. Pull the old cartridges towards you, and then lift them out.
4. With the cartridges out of the printer, shut the access door and the control panel.
5. Power the printer OFF and then back ON.
6. Please check the operator panel to see if the same error has returned or if a new message has appeared.
7. If the message displayed is 1203, there is something wrong with the printer hardware.
If the message now displaying is Cartridge Missing, do the following:

1. Reinstall the cartridges into the printer.
2. Insert the color cartridge in the left carrier. Insert the black cartridge in the right carrier.
3. Push back firmly on the cartridges until they snap securely into place.
4. Close the cartridge access door, and then close the control panel.
5. If the 1203 message is still present on the operator panel, you need to insert one cartridge at a time to determine which cartridge is producing the failure.
6. With one cartridge in the carrier, close the access door and control panel.
7. Please check the operator panel. If the 1203 error is displayed, this cartridge is the defective item. If the Cartridge Missing message is displayed, the second cartridge is producing the failure.
8. Please replace the defective cartridge.

The error 1203 error message on the operator panel could indicate a problem with one of the ink cartridges. Please follow the steps given below:

1. Please make sure the All-In-One is powered on.
2. Pull the control panel towards you, and then open the cartridge access door. The print cartridge carrier moves and stops at the loading position.
3. Pull the old cartridges towards you, and then lift them out.
4. With the cartridges out of the printer, shut the access door and the control panel.
5. Power the printer OFF and then back ON.
6. Please check the operator panel to see if the same error has returned or if a new message has appeared.
7. If the message displayed is 1203, there is something wrong with the printer hardware.
If the message now displaying is Cartridge Missing, do the following:

1. Reinstall the cartridges into the printer.
2. Insert the color cartridge in the left carrier. Insert the black cartridge in the right carrier.
3. Push back firmly on the cartridges until they snap securely into place.
4. Close the cartridge access door, and then close the control panel.
5. If the 1203 message is still present on the operator panel, you need to insert one cartridge at a time to determine which cartridge is producing the failure.
6. With one cartridge in the carrier, close the access door and control panel.
7. Please check the operator panel. If the 1203 error is displayed, this cartridge is the defective item. If the Cartridge Missing message is displayed, the second cartridge is producing the failure.
8. Please replace the defective cartridge.