HP LaserJet M1005 Service Manual - Page 8

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