HP CP6015de 8

Sequence of operation .....................................................................................................	114
Formatter system .............................................................................................................................	116
Sleep mode ......................................................................................................................	116
Resolution .......................................................................................................................	117
Input/output ......................................................................................................................	117
CPU .................................................................................................................................	117
Memory ............................................................................................................................	117
Hard disk .........................................................................................................	117
Random-access memory ................................................................................	117
DIMM slot ........................................................................................................	118
Firmware .........................................................................................................	118
Nonvolatile memory ........................................................................................	118
PJL overview ...................................................................................................................	118
PML .................................................................................................................................	118
Control panel ...................................................................................................................	118
Engine-control system ......................................................................................................................	119
DC controller ....................................................................................................................	120
Solenoids ........................................................................................................	120
Switches ..........................................................................................................	121
Sensors ...........................................................................................................	122
Motors and fans ..............................................................................................	123
Fuser control ....................................................................................................................	125
Fuser temperature-control circuit ....................................................................	127
Fuser over-temperature protection ..................................................................	128
Fuser-failure detection ....................................................................................	129
Fuser identification ..........................................................................................	129
Fuser-life detection ..........................................................................................	130
Relay-failure detection .....................................................................................................	130
Low-voltage power supply ...............................................................................................	130
Overcurrent/overvoltage protection .................................................................	131
Safety ..............................................................................................................	131
Voltage detection ............................................................................................	131
Sleep (powersave) mode ................................................................................	131
High-voltage power supply ..............................................................................................	131
Laser/scanner system ......................................................................................................................	134
Image-formation system ...................................................................................................................	136
Image-formation process .................................................................................................	137
Step 1: Pre-exposure ......................................................................................	138
Step 2: Primary charging .................................................................................	138
Step 3: Laser-beam exposure .........................................................................	139
Step 4: Development .......................................................................................	139
Step 5: Primary transfer ..................................................................................	140
Step 6: Secondary transfer .............................................................................	140
Step 7: Separation ..........................................................................................	141

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