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 ..............................................................................................................................
4 Incorrect Ink Cartridge troubleshooting ............................................................................................................... 6 The printer continuously rejects printheads ......................................................................................................... 9 A new maintenance cartridge is incorrectly detected as ‘used’ ......................................................................... 10 Cover sensors are not working ............................................................................................................................
10 The Line Sensor has problems detecting paper ................................................................................................. 10 Troubleshooting paper jams and printhead crashes .......................................................................................... 10 Troubleshooting paper, scan axis and Rewinder Motor shutdown .................................................................... 11 Vacuum suction much lower at high altitudes ....................................................................................................
12 Banding at variable extreme environmental conditions .................................................................................... 13 Printhead crashes/smears on high-density prints using coated paper ............................................................. 13 Banding due to ink cartridge replacement while printing .................................................................................. 13 34-inch Rice Paper not supported ......................................................................................................................
13 Worm marks on HP Coated Paper with light area fills ........................................................................................ 13 Solving paper-handling problems ...................................................................................................................... 14 Difficult to load paper: “Too much skew” ........................................................................................................... 14 Troubleshooting a failure with the Take-Up Reel (TUR) .....................................................................................
14 How to read the power switch LEDs .................................................................................................................... 18 How to read the Formatter LEDs ......................................................................................................................... 19 If the front panel turns on and then stops .......................................................................................................... 21 How to interpret the Service Information Pages ................................................................................................
21 When the main window is open and the printer is printing (safety compliance) ............................................... 29 How to troubleshoot the 79:04 system error ..................................................................................................... 30 ENWW vii