Figure 3-19 Replace the tray 2 or tray 3 separation pad (3 of 6) ..................................................................... 50 Figure 3-20 Replace the tray 2 or tray 3 separation pad (4 of 6) ..................................................................... 50 Figure 3-21 Replace the tray 2 or tray 3 separation pad (5 of 6) ..................................................................... 51 Figure 3-22 Replace the tray 2 or tray 3 separation pad (6 of 6) ..................................................................... 51 Figure 3-23 Cleaning the scanner glass (1 of 2) ..............................................................................................
53 Figure 3-24 Cleaning the scanner glass (2 of 2) .............................................................................................. 54 Figure 3-25 Cleaning the scanner-cover backing ............................................................................................ 55 Figure 3-26 Cleaning the tray 2 pickup roller (1 of 6) ....................................................................................... 56 Figure 3-27 Cleaning the tray 2 pickup roller (2 of 6) .......................................................................................
56 Figure 3-28 Cleaning the tray 2 pickup roller (3 of 6) ....................................................................................... 57 Figure 3-29 Cleaning the tray 2 pickup roller (4 of 6) ....................................................................................... 57 Figure 3-30 Cleaning the tray 2 pickup roller (5 of 6) ....................................................................................... 58 Figure 3-31 Cleaning the tray 2 pickup roller (6 of 6) .......................................................................................
58 Figure 3-32 Cleaning the ADF pickup-roller assembly (1 of 7) ........................................................................ 60 Figure 3-33 Cleaning the ADF pickup-roller assembly (2 of 7) ........................................................................ 60 Figure 3-34 Cleaning the ADF pickup-roller assembly (3 of 7) ........................................................................ 61 Figure 3-35 Cleaning the ADF pickup-roller assembly (4 of 7) ........................................................................ 61 Figure 3-36 Cleaning the ADF pickup-roller assembly (5 of 7) ........................................................................
62 Figure 3-37 Cleaning the ADF pickup-roller assembly (6 of 7) ........................................................................ 62 Figure 3-38 Cleaning the ADF pickup-roller assembly (7 of 7) ........................................................................ 63 Figure 3-39 Cleaning the print path .................................................................................................................. 63 Figure 4-1 HP LaserJet 3390/3392 all-in-one system block diagram ..............................................................
82 Figure 4-2 Optical system ................................................................................................................................ 84 Figure 4-3 ADF paper path ............................................................................................................................... 86 Figure 4-4 Internal components (base unit) ..................................................................................................... 88 Figure 4-5 Engine control system .....................................................................................................................
90 Figure 4-6 Engine-control-system circuit diagram ............................................................................................ 91 Figure 4-7 Laser/scanner system ..................................................................................................................... 92 Figure 4-8 Pickup/feed/delivery system ........................................................................................................... 94 Figure 4-9 Image-formation system .................................................................................................................
95 Figure 4-10 Primary charging ........................................................................................................................... 95 Figure 4-11 Developing .................................................................................................................................... 96 Figure 4-12 Transfer ......................................................................................................................................... 97 Figure 4-13 Separation .....................................................................................................................................
97 Figure 4-14 Fusing ........................................................................................................................................... 98 Figure 4-15 Drum cleaning ............................................................................................................................... 98 Figure 5-1 Phillips and pozidrive screwdriver comparison ............................................................................. 109 Figure 5-2 Parts-removal tree ........................................................................................................................
112 Figure 5-3 Remove the print cartridge (1 of 2) ............................................................................................... 113 Figure 5-4 Remove the print cartridge (2 of 2) ............................................................................................... 113 Figure 5-5 Remove the right cover (1 of 4) .................................................................................................... 114 Figure 5-6 Remove the right cover (2 of 4) ....................................................................................................
114 Figure 5-7 Remove the right cover (3 of 4) .................................................................................................... 115 Figure 5-8 Remove the right cover (4 of 4) .................................................................................................... 115 Figure 5-9 Remove the left cover (1 of 3) ....................................................................................................... 116 Figure 5-10 Remove the left cover (2 of 3) .....................................................................................................
116 Figure 5-11 Remove the left cover (3 of 3) ..................................................................................................... 117 Figure 5-12 Removing the print-cartridge door (1 of 2) .................................................................................. 118 Figure 5-13 Removing the print-cartridge door (2 of 2) .................................................................................. 119 Figure 5-14 Remove the rear cover (1 of 2) ................................................................................................... 120 xvi ENWW