User Guide

List of figures
Figure 1-1 Relationship between the main product systems ......................................................................... 2
Figure 1-2 Engine-control system ............................................................................................................. 4
Figure 1-3 DC controller block diagram ................................................................................................... 5
Figure 1-4 High-voltage power supply circuits ........................................................................................ 10
Figure 1-5 Low-voltage power-supply circuit ........................................................................................... 11
Figure 1-6 Fuser (fixing) components ..................................................................................................... 16
Figure 1-7 Fuser temperature-control circuit ............................................................................................ 17
Figure 1-8 Laser/scanner system ........................................................................................................... 20
Figure 1-9 Image formation system ........................................................................................................ 22
Figure 1-10 Image formation process .................................................................................................... 23
Figure 1-11 Pre-exposure ..................................................................................................................... 24
Figure 1-12 Primary charging ............................................................................................................... 24
Figure 1-13 Laser-beam exposure ......................................................................................................... 25
Figure 1-14 Development ..................................................................................................................... 25
Figure 1-15 Primary transfer ................................................................................................................. 26
Figure 1-16 Secondary transfer ............................................................................................................ 26
Figure 1-17 Separation ....................................................................................................................... 27
Figure 1-18 Fusing .............................................................................................................................. 27
Figure 1-19 ITB cleaning ...................................................................................................................... 28
Figure 1-20 Drum cleaning .................................................................................................................. 28
Figure 1-21 Toner-cartridge system ....................................................................................................... 29
Figure 1-22 Developing-roller engagement and disengagement control ..................................................... 30
Figure 1-23 ITB unit ............................................................................................................................. 32
Figure 1-24 Three states of primary-transfer-roller engagement and disengagement ..................................... 33
Figure 1-25 ITB cleaning process .......................................................................................................... 35
Figure 1-26 Toner patterns for calibration .............................................................................................. 36
Figure 1-27 Switches and sensors for the pickup, feed, and de
livery system ............................................... 38
Figure 1-28 Motors and solenoids for the pickup, feed, and delivery system .............................................. 39
Figure 1-29 Three main units of the pickup, feed, and delivery system ....................................................... 40
Figure 1-30 Pickup-and-feed unit ........................................................................................................... 41
Figure 1-31 Tray-pickup mechanism ...................................................................................................... 42
Figure 1-32 Tray presence sensor ......................................................................................................... 43
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