HP — HP Scanjet N9120 Service Manual

List of figures Figure 1-1 Front and right-side view ................................................................................................................... 4 Figure 1-2 Back view .......................................................................................................................................... 5 Figure 1-3 Side view (left) .................................................................................................................................. 5 Figure 1-4 Model and serial number (1 of 2) ......................................................................................................

6 Figure 1-5 Model and serial number (2 of 2) ...................................................................................................... 6 Figure 1-6 Control-panel features ...................................................................................................................... 7 Figure 2-1 Site dimensions ............................................................................................................................... 14 Figure 2-2 Unpack the device (1 of 9) ..............................................................................................................

15 Figure 2-3 Unpack the device (2 of 9) .............................................................................................................. 15 Figure 2-4 Unpack the device (3 of 9) .............................................................................................................. 16 Figure 2-5 Unpack the device (4 of 9) .............................................................................................................. 16 Figure 2-6 Unpack the device (5 of 9) ..............................................................................................................

17 Figure 2-7 Unpack the device (6 of 9) .............................................................................................................. 17 Figure 2-8 Unpack the device (7 of 9) .............................................................................................................. 17 Figure 2-9 Unpack the device (8 of 9) .............................................................................................................. 18 Figure 2-10 Unpack the device (9 of 9) ............................................................................................................

18 Figure 2-11 Electrical connection ..................................................................................................................... 19 Figure 2-12 USB connection ............................................................................................................................ 19 Figure 2-13 Power switch ................................................................................................................................. 20 Figure 3-1 Clean the ADF (1 of 5) ....................................................................................................................

24 Figure 3-2 Clean the ADF (2 of 5) .................................................................................................................... 25 Figure 3-3 Clean the ADF (3 of 5) .................................................................................................................... 25 Figure 3-4 Clean the ADF (4 of 5) .................................................................................................................... 26 Figure 3-5 Clean the ADF (5 of 5) ....................................................................................................................

26 Figure 3-6 Clean the scanner glass ................................................................................................................. 27 Figure 3-7 Clean the scanner fan filters (1 of 2) ............................................................................................... 28 Figure 3-8 Clean the scanner fan filters (2 of 2) ............................................................................................... 28 Figure 4-1 Sensors ...........................................................................................................................................

34 Figure 4-2 Motors ............................................................................................................................................. 35 Figure 4-3 Service block diagram ..................................................................................................................... 36 Figure 5-1 Phillips and pozidrive screwdriver comparison ............................................................................... 39 Figure 5-2 Remove the imprinter cartridge (1 of 4) ..........................................................................................

42 Figure 5-3 Remove the imprinter cartridge (2 of 4) .......................................................................................... 42 Figure 5-4 Remove the imprinter cartridge (3 of 4) .......................................................................................... 43 ENWW xi