Secondary service menu....................................................................................118
Printed image quality problems..........................................................................................119
Improving print quality........................................................................................119
Paper Types menu............................................................................119
Print Modes menu.............................................................................120
Print quality menu..............................................................................121
Understanding print-quality settings...................................................................121
To temporarily change print-quality settings.....................................122
To change print-quality settings for all future jobs............................122
Identifying and correcting printed image defects...............................................122
Print-quality checklist.........................................................................122
Paper handling issues........................................................................................................123
Wrong size/type media.......................................................................................123
Cannot select a tray or feature to use................................................................123
Performance problems.......................................................................................................123
Functional tests (SERVICE ONLY).....................................................................................................125
Engine test print..................................................................................................................125
Service mode functions (SERVICE ONLY).........................................................................................126
Cold reset............................................................................................................................126
NVRAM initializer................................................................................................................126
Super NVRAM initializer.....................................................................................................126
Restoring page counts and serial number..........................................................................127
Cleaning the ETB................................................................................................................127
Troubleshooting tools..........................................................................................................................128
Printer pages and reports...................................................................................................128
Demo page.........................................................................................................128
Configuration page.............................................................................................129
Event log............................................................................................................131
Supplies Status page.........................................................................................131
Fuser cleaning page...........................................................................................132
Print quality troubleshooting pages....................................................................132
Control panel messages (error codes)..............................................................132
Alert and warning messages.............................................................132
Critical error messages.....................................................................133
Supplies messages...........................................................................134
Status messages................................................................................................................137
Status log only messages...................................................................................................137
Service menu......................................................................................................................137
Restoring the factory-set defaults......................................................................138
To restore the factory-set defaults....................................................138
General print quality issues................................................................................................138
Solving issues with color documents..................................................................................142
HP Toolbox..........................................................................................................................................144
HP Toolbox.........................................................................................................................144
To view HP Toolbox...........................................................................................144
Troubleshooting tab...........................................................................................144
Print quality troubleshooting pages....................................................................................144
Printer calibration................................................................................................................144
Cleaning page.....................................................................................................................144
Configuration page..............................................................................................................145
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