HP — HP Scanjet N9120 Service Manual

List of tables Table 1-1 Product guides ................................................................................................................................... 2 Table 1-2 Product specifications ........................................................................................................................ 3 Table 1-3 Control-panel features ........................................................................................................................ 7 Table 1-4 ADF specifications ...........................................................................................................................

10 Table 1-5 Media specifications ......................................................................................................................... 10 Table 2-1 Box contents .................................................................................................................................... 17 Table 3-1 Replacement guidelines ................................................................................................................... 22 Table 4-1 Main assemblies ..............................................................................................................................

30 Table 4-2 Modes and control-panel indicators ................................................................................................. 31 Table 4-3 Circuit board assemblies .................................................................................................................. 32 Table 4-4 Sensors ............................................................................................................................................ 34 Table 6-1 Initial troubleshooting checklist ......................................................................................................

229 Table 6-2 Control-panel LEDs ........................................................................................................................ 232 Table 6-3 Main screen .................................................................................................................................... 235 Table 6-4 Scan dialog box .............................................................................................................................. 237 Table 6-5 Sensor in motion tab ......................................................................................................................

239 Table 6-6 Sensor tab ...................................................................................................................................... 241 Table 6-7 Control panel check dialog box ...................................................................................................... 244 Table 6-8 ADF feed test dialog box ................................................................................................................ 246 Table 6-9 Actuators dialog box .......................................................................................................................

249 Table 6-10 Repair menu ................................................................................................................................. 254 Table 6-11 Major components (1 of 3) ........................................................................................................... 256 Table 6-12 Major components (2 of 3) ........................................................................................................... 257 Table 6-13 Major components (3 of 3) ...........................................................................................................

257 Table 6-14 ADF motors and fans (1 of 2) ....................................................................................................... 258 Table 6-15 ADF motors and fans (2 of 2) ....................................................................................................... 259 Table 6-16 Scanner motors and fans ............................................................................................................. 259 Table 6-17 ADF controller PCA ......................................................................................................................

260 Table 6-18 Scanner PCAs .............................................................................................................................. 261 Table 6-19 Repetitive defects ......................................................................................................................... 262 Table 6-20 ISIS driver communicated message ............................................................................................ 263 Table 6-21 SDSS error message displayed ...................................................................................................

264 Table 6-22 Image defect examples ................................................................................................................ 274 Table 6-23 Solve performance problems ....................................................................................................... 278 ENWW ix