2 Troubleshooting ● Printer education and training ● Firmware update ● Print-quality troubleshooting ● Troubleshooting system error codes ● Performing a service test on a failed assembly ● Performing the necessary service calibrations ● The printer does not power on ● The printer hangs during printing and displays ‘processing’ ● The printer continuously rejects printheads ● A new maintenance cartridge is incorrectly detected as ‘used’ ● Cover sensors are not working ● The Line Sensor has problems detecting paper ● How to remove the Left Hub when the actuator is broken ● Troubleshooting paper jams and printhead crashes ● Troubleshooting shutdowns ● Vacuum suction much lower at high altitudes ● Banding at variable extreme environmental conditions ● Printhead crashes/smears on high-density prints using coated paper ● Banding due to ink cartridge replacement while printing ● 34" Rice Paper not supported ● Worm marks on HP Coated Paper with light area fills ● Solving paper-handling problems ● Difficult to load paper:
“Too much skew” ● How to read the power switch LEDs ● How to read the Formatter LEDs ● If the front panel turns on and then stops ● How to interpret the Service Information Pages ENWW 5