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 vi ENWW