Table of contents 1 Theory of operation ....................................................................................................................................... 1 Basic operation ...................................................................................................................................................... 2 Major product systems ........................................................................................................................ 2 Sequence of operation ........................................................................................................................
3 Formatter-control system ..................................................................................................................................... 4 Sleep mode .......................................................................................................................................... 4 Input/output ........................................................................................................................................ 4 CPU .......................................................................................................................................................
4 Memory ................................................................................................................................................ 4 NAND Flash memory ........................................................................................................................... 4 Firmware .............................................................................................................................................. 5 Memory use .........................................................................................................................................
5 PJL overview ........................................................................................................................................ 5 LEDM overview .................................................................................................................................... 5 Control panel ....................................................................................................................................... 5 Engine-control system ..........................................................................................................................................
6 DC controller ........................................................................................................................................ 7 Low-voltage power supply ................................................................................................................. 8 High-voltage power supply ................................................................................................................. 9 Fuser control .....................................................................................................................................
10 Image-formation system .................................................................................................................................... 11 Image-formation process ................................................................................................................. 12 Latent-image formation stage ....................................................................................... 14 Step 1: Primary charging .............................................................................. 14 Step 2: Laser-beam exposure ......................................................................
14 Developing stage ............................................................................................................ 15 Transfer stage ................................................................................................................. 16 Step 3: Development .................................................................................... 15 Step 4: Primary transfer ............................................................................... 16 Step 5: Secondary transfer .......................................................................... 16 Step 6: Separation from the drum ...............................................................
17 Fusing stage .................................................................................................................... 17 ENWW v