H half-self test 142 hardware common 162 high-voltage connector assembly 147 power distribution 46 power supply check 146 I image fixing process 52 image formation function 43 system 51 troubleshooting 125 images lines on page 128 too light or dark 126 installing self-tapping screws 62 K kick plate motion 53, 147 L LED (light-emitting diode) array 56 light faxes 126 printing 127 scanned images 126 light patterns printer 11, 26 light-emitting diode (LED) array 56 lines on scanned images 128 C4224-90962 191