HP LaserJet M4345 - Multifunction Printer - Page 8

Set the real-time clock ....................................................................................................................... 100
Set the date and time ........................................................................................................ 100
Set the date format ........................................................................................... 100
Set the date ...................................................................................................... 100
Set the time format ........................................................................................... 100
Set the time ...................................................................................................... 100
Set the wake time ............................................................................................................. 101
Set the sleep delay ........................................................................................................... 101
Upgrading the firmware ..................................................................................................................... 102
Determining the current level of firmware ......................................................................... 102
Downloading the new firmware from the HP Web site ..................................................... 102
Transferring the new firmware to the MFP ....................................................................... 102
Using FTP to upgrade the firmware on a network connection ........................ 102
Using HP Web Jetadmin to upgrade the firmware .......................................... 104
Using MS-DOS commands to upgrade the firmware ...................................... 104
Upgrading the HP Jetdirect firmware ................................................................................ 105
Calibrate the scanner ........................................................................................................................ 106
Calibrate the control panel ................................................................................................................. 107
Disable Embedded Jetdirect I/O ........................................................................................................ 108
Select the MFP language .................................................................................................................. 109
4 Theory of operation
Basic operation .................................................................................................................................. 112
Sequence of operation (printer) ........................................................................................ 112
Sequence of operation (scanner) ..................................................................................... 113
Formatter system ............................................................................................................................... 114
Sleep mode ....................................................................................................................... 114
Resolution Enhancement technology (REt) ...................................................................... 114
EconoMode ....................................................................................................................... 115
Input/output ....................................................................................................................... 115
CPU ................................................................................................................................... 115
Memory ............................................................................................................................. 115
Hard disk .......................................................................................................... 115
Random-access memory ................................................................................. 115
DIMM slot ......................................................................................................... 115
Firmware .......................................................................................................... 115
Nonvolatile memory ......................................................................................... 116
HP Memory Enhancement technology ............................................................ 116
PJL overview ..................................................................................................................... 116
PML ................................................................................................................................... 116
Control panel ..................................................................................................................... 116
Scanner interface .............................................................................................................. 116
Engine-control system ....................................................................................................................... 117
DC controller PCA ............................................................................................................. 117
Motors and fans ................................................................................................................ 119
Motor and fan functions .................................................................................... 119
Ambient-temperature detection ........................................................................ 120
Engine power supply circuit .............................................................................................. 120
Fuser control ..................................................................................................................... 121
Fuser over-temperature protection .................................................................. 122
vi ENWW