HP M750 series

CPU
The formatter incorporates a 800 MHz Vermillion processor.
Memory
The random access memory (RAM) on the formatter printed circuit assembly (PCA) contains the page, I/O
buffers, and the font storage area. It stores printing and font information received from the host system, and
can also serve to temporarily store a full page of print-image data before the data is sent to the print engine.
NOTE: If the product encounters a problem when managing available memory, a clearable warning
message appears on the control-panel display.
Firmware
The firmware is contained in the internal solid state drive (SSD) or hard disk (HD). A remote firmware upgrade
process is used to overwrite and upgrade the firmware on the SSD or HD.
Nonvolatile memory
The product uses nonvolatile memory (NVRAM) to store device and user configuration settings. The contents
of NVRAM are retained when the product is turned off or disconnected.
PJL overview
The printer job language (PJL) is an integral part of configuration, in addition to the standard printer
command language (PCL). With standard cabling, the product can use PJL to perform a variety of functions.
●
Two-way communication with the host computer through a network connection or a USB connection.
The product can inform the host about the control-panel settings which can be changed from the host.
●
Dynamic I/O switching. The product uses this switching to be configured with a host on each I/O. The
product can receive data from more than one I/O simultaneously, until the I/O buffer is full. This can
occur even when the product is offline.
●
Context-sensitive switching. The product can automatically recognize the personality (PS or PCL) of
each job and configure itself to serve that personality.
●
Isolation of print environment settings from one print job to the next. For example, if a print job is sent
to the product in landscape mode, the subsequent print jobs print in landscape mode only if they are
formatted for landscape printing.
PML
The printer management language (PML) allows remote configuration and status read-back through the I/O
ports.
Control panel
The formatter sends and receives product status and command data to and from the control-panel PCA.
6 Chapter 1 Theory of operation ENWW