Vertical black band 20 cm wide ......................................................................................................................... 214
The scanner damages some originals .............................................................................................................. 215
Completely wrong colors .................................................................................................................................. 215
Vertical distortion .............................................................................................................................................. 216
Object replication (ghosting) ............................................................................................................................. 216
Clipping or incorrect scale factor when down-scaling in copies and prints ..................................................... 217
Incorrect edge detection, mostly when scanning tracing paper ...................................................................... 218
A copied or scanned image is very skewed ....................................................................................................... 218
24 The scanner diagnostic plot ...................................................................................................................... 219
Prepare the printer and the paper to print the diagnostic sheet ..................................................................... 220
Visual check for errors while printing the diagnostic sheet ............................................................................. 220
Scan or copy the diagnostic plot ....................................................................................................................... 224
Monitor calibration ............................................................................................................................................ 224
Save the diagnostic plot for future use ............................................................................................................ 225
25 Troubleshooting ink cartridge and printhead issues ................................................................................... 226
Cannot insert an ink cartridge ........................................................................................................................... 227
Ink cartridge status messages .......................................................................................................................... 227
Cannot insert the printhead .............................................................................................................................. 227
The front-panel display recommends reseating or replacing the printhead .................................................. 227
Clean the printhead ........................................................................................................................................... 228
Align the printhead ............................................................................................................................................ 228
Printhead status messages ............................................................................................................................... 229
26 Troubleshooting general printer issues ..................................................................................................... 230
The printer will not start ................................................................................................................................... 231
The printer does not print ................................................................................................................................. 231
The printer seems slow ..................................................................................................................................... 232
The printer behaves strangely .......................................................................................................................... 232
Communication failures between computer and printer ................................................................................. 232
Cannot access the HP Utility ............................................................................................................................. 233
Cannot access the Embedded Web Server ........................................................................................................ 233
Cannot connect to the Internet ......................................................................................................................... 233
Mobile printing troubleshooting ....................................................................................................................... 234
Automatic file system check ............................................................................................................................. 234
Alerts .................................................................................................................................................................. 235
27 Front-panel error messages ..................................................................................................................... 236
The system error log ......................................................................................................................................... 239
ENWW ix
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