Service manual

Print Modes menu.............................................................................122
Print quality menu..............................................................................122
Understanding print-quality settings...................................................................123
To temporarily change print-quality settings.....................................123
To change print-quality settings for all future jobs............................123
Identifying and correcting printed image defects...............................................124
Print-quality checklist.........................................................................124
Paper handling issues........................................................................................................124
Wrong size/type media.......................................................................................124
Cannot select a tray or feature to use................................................................125
Performance problems.......................................................................................................125
Functional tests (service only).............................................................................................................127
Engine test print..................................................................................................................127
Service mode functions (service only).................................................................................................128
Cold reset............................................................................................................................128
NVRAM initializer................................................................................................................128
Super NVRAM initializer.....................................................................................................128
Restoring page counts and serial number..........................................................................129
Cleaning the ETB................................................................................................................129
Troubleshooting tools..........................................................................................................................130
Printer pages and reports...................................................................................................130
Demo page.........................................................................................................130
Configuration page.............................................................................................131
Event log............................................................................................................132
Supplies Status page.........................................................................................132
Fuser cleaning page...........................................................................................133
Print quality troubleshooting pages....................................................................133
Control panel messages (error codes)..............................................................133
Alert and warning messages.............................................................133
Critical error messages.....................................................................135
Supplies messages...........................................................................135
Status messages................................................................................................................138
Status log only messages...................................................................................................139
Service menu......................................................................................................................139
Restoring the factory-set defaults......................................................................139
To restore the factory-set defaults....................................................139
General print quality issues................................................................................................139
Solving issues with color documents..................................................................................143
HP Toolbox..........................................................................................................................................146
HP Toolbox.........................................................................................................................146
To view HP Toolbox...........................................................................................146
Troubleshooting tab...........................................................................................146
Print quality troubleshooting pages....................................................................................146
Printer calibration................................................................................................................146
Cleaning page.....................................................................................................................146
Configuration page..............................................................................................................147
Diagnostic resources...........................................................................................................................148
Reports menu.....................................................................................................................148
Web diagnostics tools.........................................................................................................148
Repetitive image defect ruler...............................................................................................................149
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