HP 1050c Service Manual - Page 85

Service Tests and Utilities WARNING IF THIS TEST PASSES, DO NOT REPLACE THE EIO CARD. If there is a problem with the EIO Card then the test will fail and the following message will appear on the front panel: EIO CARD Possible Failure on: 1. EIO CARD 2. Electronics Module Code: 00XXXX:0000XX NOTE WARNING Check that the EIO Card is actually installed before starting to troubleshoot. If the EIO Card is NOT installed, the test will of course always fail. In this case, to resolve the problem, try the following: 1 Switch the printer OFF. Remove the Hard Disk Drive (if installed) and reinstall the EIO Card making sure it installed correctly by pushing it firmly inwards and checking that the two installation screws are completely tightened. Switch the printer ON again and repeat the EIO Card Test. If the EIO Card Test fails again then replace the EIO card. 2 If the EIO Card Test passed 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 and repeat the EIO Card Test. If the EIO Card Test fails, then the Hard Disk Drive could be faulty. Replace the Hard Disk Drive. 3 If the EIO Card Test continues to fail after replacing the EIO card or the Hard Disk Drive, then replace the Electronics Module ⇒ Page 8-25. Only replace one component at a time and try the Service Test again before replacing another component. Using this procedure you will be able to determine exactly which component failed. HP DesignJets 1050C and 1055CM Printers Service Manual 4-11