Supply System Problem Error

RhoyalRedeemer · ‎07-11-2026

I received an error message through my printer "There is a problem with the supply system." It notes that the issue was with the Magenta and Yellow cartridges. I have replaced them with new cartridges, but I'm still getting the error. Before I go back to the store, I wanted to see if there is something I can do to correct this, because I get the feeling it's not the cartridges.

Pallipurath · ‎07-12-2026

Hi @RhoyalRedeemer

Welcome to the HP Support Community! We're happy to have you on board! 

To help us get started on resolving your issue, could you please share the model name of your device?

Need help finding your product number? We've got you covered! Check out this handy guide:  

https://support.hp.com/in-en/document/ish_2039298-1862169-16 

Meanwhile, you can refer to the following link to resolve the issue: 

https://support.hp.com/au-en/document/ish_1740122-1449154-16

We're looking forward to helping you get back up and running! 

Best regards,

I'm an HP Employee.

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RhoyalRedeemer · ‎07-12-2026

The product number is K7S42A. The serial number is CN623A603N. It is the HP OfficeJet Pro 8740.

Pallipurath · ‎07-13-2026

Hi @RhoyalRedeemer

Thank you for responding.

I understand that you are experiencing an issue with your HP OfficeJet Pro 8740 All-in-One Printer. I kindly request that you follow the steps below to help resolve the issue:

Reset the printer

Reset the printer to recover from printer errors or failures.
Press the power button to turn off the printer. If the printer does not turn off, disconnect the power cord from the printer.
Unplug the power cord from the power source.
Wait 60 seconds.
Connect the power cord directly to a wall outlet and to the printer.
Turn on the printer to complete the reset.

Clean the ink cartridge vents

Glue residue from the label or debris on the cartridge vent might cause an error.
Open the door or lid to the cartridge access area. Wait until the carriage stops moving before continuing.
Push in the tab on a cartridge, and then pull the cartridge from the slot.
If the cartridge has the orange pull-tab attached, remove it.
Use a pin or paper clip to remove any debris or excess adhesive from the vent on top of the cartridge.
Reinsert the cartridge into its color-coded slot, and then press down on it until it snaps into place.
Repeat these steps to clean the vent on the other cartridges.

Replace all ink cartridges

Install a new set of cartridges to resolve certain ink system-related errors.
Obtain new cartridges. HP recommends genuine HP cartridges.
Open the door or lid to the cartridge access area. Wait until the carriage stops moving before continuing.
Remove a cartridge, and then insert the new cartridge into the slot.
Repeat these steps to replace the other cartridges.

I hope this helps.

Have a good day.