HP Color LaserJet 4700 Series - Theory of Operation; Basic Operation; Internal Components; Input;Output

Installing a hard drive, memory, and fonts ........................................................................................ 114
Installing a hard drive (HP Color LaserJet 4700 Series) .................................................. 114
Installing DDR memory DIMMs ........................................................................................ 117
Installing a flash memory card (HP Color LaserJet 4700 Series only) ............................. 121
Enabling memory .............................................................................................................. 125
To enable memory for Windows 98 and Me .................................................... 125
To enable memory for Windows 2000 and XP ................................................ 125
Installing an HP Jetdirect print server card (HP Color LaserJet 4700 Series only) .......................... 126
To install an HP Jetdirect print server card ....................................................................... 126
Setting the real-time clock ................................................................................................................. 130
Setting the date and time .................................................................................................. 130
To set the date format ...................................................................................... 130
To set the date ................................................................................................. 130
To set the time format ...................................................................................... 131
To set the time ................................................................................................. 131
Setting the wake time ....................................................................................................... 132
To set the wake time ........................................................................................ 132
Setting the sleep delay ..................................................................................................... 133
To set the sleep delay ...................................................................................... 133
5 Theory of operation
Basic operation .................................................................................................................................. 136
Operation sequence ......................................................................................................... 136
Power on sequence .......................................................................................................... 137
Internal components .......................................................................................................................... 139
Formatter system ............................................................................................................................... 141
Sleep mode ....................................................................................................................... 141
Image Resolution Enhancement technology (REt) .......................................................... 142
Input/Output ...................................................................................................................... 142
Parallel interface (HP Color LaserJet 4700 Series only) ................................. 142
USB 2.0 connector ........................................................................................... 142
ACC accessory port (HP Color LaserJet 4700 Series only) ............................ 142
Flash (HP Color LaserJet 4700 Series only) ................................................... 143
Hard drive accessory (HP Color LaserJet 4700 Series only) .......................... 143
CPU .................................................................................................................. 143
Printer memory ................................................................................................................. 143
Read-only memory ........................................................................................... 143
Random-access memory ................................................................................. 143
DIMM slots ........................................................................................................................ 143
Flash memory .................................................................................................. 143
Nonvolatile memory ......................................................................................... 143
PJL overview ..................................................................................................................... 144
PML ................................................................................................................................... 144
Control panel ..................................................................................................................... 144
Engine control system ....................................................................................................................... 145
DC controller PCB ............................................................................................................. 145
Block operation ................................................................................................ 147
Motors, fans, and environment sensor ............................................................................. 147
Failure detection ............................................................................................................... 149
Drum motor failure detection ............................................................................ 149
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