HP C7769B Service Manual - Page 12

Troubleshooting Guide to Troubleshooting the Printer Introduction This chapter will guide you through the relevant steps to take when troubleshooting the printer. Troubleshooting System Error Codes Chapter 2 - System Error Codes contains a list of system error codes and their respective descriptions and recommended corrective actions. Only try one recommended action at a time and check if the error code has disappeared. NOTE Performing a Service Test on a Failed Assembly If possible, always perform a Service Test on the component/ assembly that you are about to replace, just to make sure that is the component/assembly that has failed. If the test on that component/assembly passes, you should NOT replace it. For information on the Service Tests and how to use them see Chapter 4 - Service Tests and Utilities. NOTE Performing the Necessary Service Calibrations Is the printer calibrated correctly after replacing a component? Remember that certain Calibrations are required even if an Assembly has been disassembled to gain access to another Assembly or Component. For information on the Service Calibrations and how to use them see Chapter 5 - Service Calibrations. 1-2 HP DesignJets 500 and 800 Series Printers Service Manual