Table of contents 1 Theory of operation .......................................................................................................... 1 Basic operation ........................................................................................................................ 2 Major product systems ............................................................................................... 2 Product components .................................................................................................. 3 Sequence of operation ...............................................................................................
4 Engine control system ............................................................................................................... 5 DC controller ............................................................................................................ 6 Low-voltage power supply .......................................................................................... 7 High-voltage power supply ......................................................................................... 8 Laser/scanner system ...............................................................................................................
9 Laser failure detection ................................................................................................ 9 Image-formation system ........................................................................................................... 10 Latent-image formation stage .................................................................................... 11 Image-formation process .......................................................................................... 10 Step 1: primary charging .......................................................................... 12 Step 2: laser-beam exposure .....................................................................
12 Developing stage .................................................................................................... 12 Transfer stage ......................................................................................................... 14 Step 3: development ................................................................................. 13 Step 4: primary transfer ............................................................................ 14 Step 5: secondary transfer ......................................................................... 14 Step 6: separation from the ITB ..................................................................
15 Fusing stage ........................................................................................................... 15 Step 7: fusing .......................................................................................... 15 ITB cleaning stage ................................................................................................... 16 Step 8: ITB cleaning ................................................................................. 16 Drum cleaning stage ................................................................................................
17 Pickup-and-feed system ........................................................................................................... 18 Step 9: drum cleaning .............................................................................. 17 Jam detection ......................................................................................................... 19 Scanner system (base models) ................................................................................................. 20 Scanner power-on sequence of events ....................................................................... 20 ENWW v