Paper-pickup assembly ................................................................................................... 107
7 Troubleshooting
Basic troubleshooting ....................................................................................................................... 110
Control-panel messages .................................................................................................................. 113
Alert and warning messages .......................................................................................... 113
Critical error messages ................................................................................................... 113
Event-log codes ............................................................................................................... 115
Solving image-quality problems ....................................................................................................... 116
Checking the print cartridge ............................................................................................ 116
To redistribute the toner in the print cartridge ................................................. 116
Solving print image-quality problems ............................................................................... 116
Print image-quality problems ........................................................................... 116
Solving scanning (copying) image-quality problems ........................................................................ 124
Scanning (copying) image-quality problems .................................................................... 124
Repetitive image defect ruler ............................................................................................................ 130
Solving paper-feed problems ........................................................................................................... 131
Jams occur in the device ................................................................................................. 131
To clear a jam ................................................................................................. 131
Solving print paper-feed problems ................................................................................... 132
Print paper-feed problems ............................................................................... 133
Functional checks ............................................................................................................................. 135
Half self-test functional check ......................................................................................... 135
To perform a half self-test check ..................................................................... 135
To perform other checks ................................................................................. 135
Drum rotation functional check ........................................................................................ 136
High-voltage contacts check ............................................................................................ 137
To check the print-cartridge contacts .............................................................. 137
To check the high-voltage connector pins ....................................................... 138
Firmware update using a flash executable file ................................................................................. 139
Troubleshooting tools ....................................................................................................................... 140
Printing a configuration report, demonstration page, or menu structure .......................... 140
Service-mode functions .................................................................................................................... 141
Secondary service menu ................................................................................................. 141
To gain access to the secondary service menu .............................................. 141
Adjusting the country/region code parameters ................................................................ 142
To change the country/region from one location to another ............................ 142
To set the language and location if none is set ............................................... 142
NVRAM init ...................................................................................................................... 142
To perform NVRAM init ................................................................................... 143
System settings for localized products ............................................................................ 143
Main wiring ....................................................................................................................................... 146
Component locations ........................................................................................................................ 148
8 Parts and diagrams
Ordering parts and supplies ............................................................................................................. 152
Parts that wear ................................................................................................................ 152
Parts ................................................................................................................................ 152
World-wide customer support .......................................................................................... 152
Accessories ...................................................................................................................................... 153
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