HP 1050c Service Manual - Page 87

Service Tests and Utilities WARNING IF THIS TEST PASSES, DO NOT REPLACE THE HARD DISK DRIVE. If there is a problem with the Hard Disk Drive then the test will fail and the following message will appear on the front panel: HARD DISK DRIVE Possible Failure on: 1. HDD 2. Electronics Module Code: 00XXXX:0000XX NOTE WARNING Check that the Hard Disk Drive is actually installed before starting to troubleshoot. If the Hard Disk Drive 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 EIO Card (if installed) and reinstall the Hard Disk Drive 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 Hard Disk Drive Test. If the Hard Disk Drive Test fails again then replace the Hard Disk Drive. 2 If the Hard Disk Drive Test passed after removing the EIO Card, then switch the Printer OFF and reinstall the EIO Card, making sure that the two installation screws are completely tightened. Switch the Printer ON again and repeat the Hard Disk Drive Test. If the Hard Disk Drive Test fails, then the EIO Card could be faulty. Replace the EIO Card. 3 If the Hard Disk Drive 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 4-13