HP — HP DesignJet T120 T520 service manual

5 Removal and installation ........................................................................................................................... 135 Introduction ....................................................................................................................................................... 137 Customer Self Repair parts ............................................................................................................................... 139 Videos available .................................................................................................................................................

140 Recommended checks after replacing parts .................................................................................................... 140 Top Cover ........................................................................................................................................................... 141 Front Cover ........................................................................................................................................................ 144 Right Cover ........................................................................................................................................................

147 Ink Cartridge Cover ............................................................................................................................................ 150 Left Cover .......................................................................................................................................................... 152 Back Cover ......................................................................................................................................................... 157 Roll Cover ...........................................................................................................................................................

154 Front Panel ........................................................................................................................................................ 159 Front Panel Cable .............................................................................................................................................. 165 Central Cover ..................................................................................................................................................... 166 Upper-Roll Paper Guide .....................................................................................................................................

171 Left Roll Support ............................................................................................................................................... 174 Right Roll Support ............................................................................................................................................. 179 Top Cover Sensor ............................................................................................................................................... 182 Top Cover Sensor Cable .....................................................................................................................................

185 Ink Cartridge Cover PCA Assembly .................................................................................................................... 192 Encoder Strip ..................................................................................................................................................... 187 Power Supply ..................................................................................................................................................... 196 Main PCA ............................................................................................................................................................

198 Paper Motor ....................................................................................................................................................... 204 Encoder Disk ...................................................................................................................................................... 210 Encoder PCA and Index ...................................................................................................................................... 206 Trailing Cable .....................................................................................................................................................

213 Service Station ................................................................................................................................................... 220 Prime Pump ....................................................................................................................................................... 226 Carriage and Belt ............................................................................................................................................... 229 Carriage Belt ......................................................................................................................................................

235 Right Gear Train Module .................................................................................................................................... 237 Starwheel Assembly .......................................................................................................................................... 239 Output Shaft ...................................................................................................................................................... 241 Output Tray ........................................................................................................................................................

249 Multi-Sheet Tray Assembly ............................................................................................................................... 252 Multi-Sheet Tray Assembly Extensions ............................................................................................................ 253 Output Platen .................................................................................................................................................... 255 Carriage Motor ...................................................................................................................................................

260 Cutter Guide ....................................................................................................................................................... 271 Cutter Assembly ................................................................................................................................................ 264 Out-Of-Paper Sensor ......................................................................................................................................... 273 Out-Of-Paper Sensor Cable ............................................................................................................................... 276 viii ENWW