HP 1050c Service Manual - Page 42

System Error Codes System Error: 04Cxxx Problem Description: EIO Accessories (EIO Card/Hard Disk Drive) Error. Corrective Action: Try the following: n Press ENTER and switch the printer OFF. Remove the Hard Disk Drive (if installed) and make sure that the EIO card is installed correctly by pushing it firmly inwards and checking that the two installation screws are completely tightened. Switch the printer ON again. If this error code continues to appear then replace the EIO card. n If this Error Code disappeared after removing the Hard Disk Drive, then switch the Printer OFF and reinstall the Hard Disk Drive, making sure that the two installation screws are completely tightened. Switch the Printer ON again. If this Error Code reappears, then the Hard Disk Drive could be faulty. Replace the Hard Disk Drive. n If this system error continues to appear after replacing the EIO card or the Hard Disk Drive, then replace the Electronics Module ⇒ Page 8-25. System Error: Problem Description: 048xxx The EIO card is from a third party vendor and may not be fully compliant with the IIO Protocol specification 2.0 OR the EIO Card firmware is not updated. Corrective Action: Try the following: n Check with the third party vendor. If the EIO card is not compliant with the IIO Protocol specification 2.0 then you must install a new EIO card which is compliant. n Update the EIO Card firmware. 2-8 HP DesignJets 1050C and 1055CM Printers Service Manual