HP LaserJet Pro Color MFP M476dw - Page 19

List of figures
Figure 1-1 Product components ........................................................................................................................................... 2
Figure 1-2 Engine control system components ................................................................................................................... 7
Figure 1-3 DC controller circuit diagram .............................................................................................................................. 8
Figure 1-4 Low-voltage power supply ................................................................................................................................. 9
Figure 1-5 Fuser block diagram ......................................................................................................................................... 10
Figure 1-6 Fuser control circuit .......................................................................................................................................... 11
Figure 1-7 High-voltage power supply .............................................................................................................................. 14
Figure 1-8 Laser/scanner system ...................................................................................................................................... 15
Figure 1-9 Image-formation system .................................................................................................................................. 16
Figure 1-10 Image-formation process ............................................................................................................................... 17
Figure 1-11 Primary charging ............................................................................................................................................ 17
Figure 1-12 Laser-beam exposure ..................................................................................................................................... 18
Figure 1-13 Development .................................................................................................................................................. 18
Figure 1-14 Primary transfer ............................................................................................................................................. 19
Figure 1-15 Secondary transfer ......................................................................................................................................... 19
Figure 1-16 Separation from the drum .............................................................................................................................. 20
Figure 1-17 Fusing .............................................................................................................................................................. 20
Figure 1-18 ITB cleaning ..................................................................................................................................................... 21
Figure 1-19 Drum cleaning ................................................................................................................................................. 22
Figure 1-20 Pickup-and-feed system ................................................................................................................................ 23
Figure 1-21 Multiple-feed prevention ................................................................................................................................ 26
Figure 1-22 ADF paper path ............................................................................................................................................... 31
Figure 1-23 ADF jam clearance ........................................................................................................................................... 32
Figure 2-1 Control-panel 2ndary Service test access buttons .......................................................................................... 45
Figure 2-2 Engine test button access ................................................................................................................................. 47
Figure 2-3 Major components ............................................................................................................................................ 50
Figure 2-4 Motors and fans ................................................................................................................................................ 52
Figure 2-5 Rollers ............................................................................................................................................................... 53
Figure 2-6 PCAs ................................................................................................................................................................... 54
Figure 2-7 Optional 250-sheet cassette ............................................................................................................................ 55
Figure 2-8 Timing diagram ................................................................................................................................................. 56
Figure 2-9 Circuit diagram .................................................................................................................................................. 57
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