Table of contents 1 Theory of operation ....................................................................................................................................... 1 Basic operation ...................................................................................................................................................... 2 Sequence of operation ........................................................................................................................ 4 Formatter-control system .....................................................................................................................................
5 Formatter hardware ............................................................................................................................ 5 Sleep mode ....................................................................................................................... 6 Input/output ...................................................................................................................... 6 CPU .................................................................................................................................... 6 Memory .............................................................................................................................
6 Firmware ........................................................................................................................... 6 Nonvolatile memory ......................................................................................................... 7 PML .................................................................................................................................... 7 PJL overview ..................................................................................................................... 7 Control panel .......................................................................................................................................
7 Engine-control system .......................................................................................................................................... 8 DC controller ........................................................................................................................................ 9 Solenoids ......................................................................................................................... 10 Clutches ...........................................................................................................................
10 Switches .......................................................................................................................... 10 Sensors ............................................................................................................................ 11 Motors ............................................................................................................................. 12 Fans ................................................................................................................................. 13 High-voltage power supply ............................................................................................
14 Low-voltage power supply ............................................................................................. 16 Over-current/over-voltage protection ........................................................ 17 Safety ............................................................................................................ 17 Function ........................................................................................................ 18 Voltage detection ......................................................................................... 18 Sleep (power save) mode .............................................................................
18 Low-voltage power supply failure ............................................................... 19 Fuser control ................................................................................................................... 19 Fuser temperature control ........................................................................... 20 ENWW v