HP Designjet 4000 Service Manual - Page 97

Service Tests and Utilities If there is a failure at this point, the Front Panel will display System Error Code 79:03. For more information on troubleshooting this error code, refer to Page 2-21. „ Getting unit config. If the current Part Number is not in the correct 6 character format, the Front Panel will display a fail message. In this case, re-enter in to the Service Tests submenu and use the diagnostic "13. Error 71:19 Recovery" to set the correct Serial Number (refer to Page 4-47). If the unit configuration is incorrect according to the part number, the Front Panel will display a fail message. In this case, re-enter in to the Service Tests submenu and use the diagnostic "12. Set Unit Configuration" to set the correct configuration (refer to Page 4-46). „ Starting Tests GPIO. If there is a failure at this point, the Front Panel will display System Error Code 01.0:10. For more information on troubleshooting this error code, refer to Page 2-3. „ Checking GPIO channels. At this stage, the Printer reads and checks the default GPIO values in the Interconnect PCA when all the cables are connected and all the sensors give the default value or the current state. The results will be displayed on the Front Panel and you can press any key to scroll through the information. 1 2 * * * * 3 * * * * 4 * * Items marked with an asterisk are not important and can be ignored. If any of the channels cannot be read, the Front Panel will display System Error Code 01.0:10. For more information on troubleshooting this error code, refer to Page 2-3. If any of the read values do not match the expected default, the Front Panel will display System Error Code 07:10. For more information on troubleshooting this error code, refer to Page 2-6. hp designjet 4000 series printer service manual 4-23