HP 1050c Service Manual - Page 50

System Error Codes System Error: 0A0070 (Continuable) Problem Description: The Backup EEROM contents stored in the Tubes System are not consistent with the ones required by the firmware. Corrective Action: Try the following: n Perform the Calibrations Backup ⇒ Page 5-19. NOTE Make sure that you select "Tubes Replaced" when performing the Calibrations Backup. System Error: 0C0030 Problem Description: Bad Drop Detector. Corrective Action: Try the following: n Check that the Drop Detector Cable is NOT broken or damaged. n Check that the Drop Detector cable is correctly connected to the Service Station Cable. n Remove the Drop Detector and make sure that there are no obstacles inside which are blocking the sensor. n Replace the Drop Detector Assembly ⇒ Page 8-10. n If the Error Code continues, replace the Electronics Module ⇒ Page 8-25. WARNING Only replace one component at a time and check if the error has gone before replacing another component. Using this procedure you will be able to determine exactly which component failed. 2-16 HP DesignJets 1050C and 1055CM Printers Service Manual