Table of contents 1 Troubleshooting ................................................................................................................ 1 Printer education and training .................................................................................................... 3 Firmware update ...................................................................................................................... 3 Print-quality troubleshooting ....................................................................................................... 4 Troubleshooting system error codes ............................................................................................
4 Performing a service test on a failed assembly ............................................................................. 4 Performing the necessary service calibrations .............................................................................. 4 The printer does not power on ................................................................................................... 5 The printer continuously rejects printheads ................................................................................... 5 A new maintenance cartridge is incorrectly detected as ‘used’ .......................................................
5 Cover sensors are not working ................................................................................................... 5 The Line Sensor has problems detecting paper ............................................................................. 5 Troubleshooting paper jams and printhead crashes ...................................................................... 6 Troubleshooting paper, scan axis and Rewinder Motor shutdown .................................................. 6 Vacuum suction much lower at high altitudes ...............................................................................
8 Banding at variable extreme environmental conditions .................................................................. 8 Printhead crashes/smears on high-density prints using coated paper .............................................. 8 Banding due to ink cartridge replacement while printing ............................................................... 9 34-inch Rice Paper not supported ............................................................................................... 9 Worm marks on HP Coated Paper with light area fills ..................................................................
9 Solving paper-handling problems ............................................................................................... 9 Difficult to load paper: “Too much skew” .................................................................................. 10 Troubleshooting a failure with the Take-Up Reel (TUR) ................................................................. 10 How to read the power switch LEDs .......................................................................................... 13 How to read the Formatter LEDs ...............................................................................................
14 If the front panel turns on and then stops ................................................................................... 16 How to interpret the Service Information Pages .......................................................................... 16 When the main window is open and the printer is printing (safety compliance) .............................. 24 How to troubleshoot the 79:04 system error .............................................................................. 25 2 System error codes .........................................................................................................
38 What to do if the front panel is blank ....................................................................................... 39 System error codes ................................................................................................................. 39 Explanation of system error codes and warnings ........................................................................ 39 ENWW vii