HP LaserJet Enterprise P3015 Service Manual - Page 8

Power-on checks 132 Tools for troubleshooting ...133 Individual component diagnostics 133 LED diagnostics 133 LED indicators 133 Formatter heartbeat LED 133 HP Jetdirect LEDs 134 Engine diagnostics 134 Engine-test button 134 Fuser test page 135 Paper-path test (and automatic sensors test 136 Sensor test (interactive 137 A TOP (Top-of-Page) sensor 140 B Fuser output sensor 141 C Duplex sensor 142 D Paper width sensor 1 143 E Tray 3 feed sensor 144 F Tray 4 feed sensor 145 G FD tray full sensor 146 H Face up detect sensor 147 I Cartridge-door open switch 148 J Rear cover open sensor 149 K Tray 1 paper sensor 150 L Tray 2 paper sensor 151 M Tray 2 detect switch 152 N Tray 3 paper sensor 153 O Tray 3 detect switch 154 P Tray 4 paper sensor 155 Q Tray 4 detect switch 156 Print/stop test 157 Component tests 158 Half self-test 158 Drum rotation test check 158 Diagnostics menu components test 158 Diagrams ...160 Block diagrams 160 Plug/jack locations 162 Location of connectors 163 ECU controller connections 163 Locations of major components 165 General timing charts 169 General circuit diagram 170 Internal print quality test pages 171 Cleaning page 172 viii ENWW