HP 1050c Service Manual - Page 38

System Error Codes System Error: 010021 (Non-Continuable) Problem Description: Memory DRAM DIMM Test failure. Corrective Action: Try the following: n Switch the Power OFF from the back of the Printer and disconnect the Power cord. Reseat the DRAM DIMMs (Memory Modules), reconnect the power cord and power On the Printer. n If the Error Code appears again, switch the Power OFF, disconnect the power cord and Replace the Flash DIMMs (Memory Modules). Reconnect the power cord and power On the Printer and check if the Error Code has been resolved. 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. System Error: 010023 (Non-Continuable) Problem Description: EEROM Test failure. Corrective Action: Try the following: n Clear the EEROM ( ⇒ Page 4-38) and turn the Printer OFF and ON again from the back of the Printer. If after clearing the EEROM, the Error Code disappears, make sure you perform the Calibrations Backup ⇒ Page 5-19. NOTE Make sure that you select "Electronics Module Replaced" when performing the Calibrations Backup. n If the Error Code continues, replace the Electronics Module ⇒ Page 8-25. 2-4 HP DesignJets 1050C and 1055CM Printers Service Manual