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Memory
The formatter system contains the digital sender memory, which is divided into several components.
This section describes each memory component.
NOTE: If the digital sender encounters a problem when managing available memory, a
clearable warning message appears on the control panel.
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Hard-disk drive. The digital sender comes standard with a hard disk that has a capacity of 40 GB
or greater. The hard disk is used to store settings.
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Random-access memory on the formatter. The random-access memory (RAM) contains the
scanned image. Memory capacity can be increased by adding a dual inline memory module (DIMM)
to the formatter or replacing an existing DIMM with a larger DIMM. In most cases, additional
memory might be required to use the digital sender with certain other devices, such as third-party
devices. Typically, adding memory will not increase the performance of the device.
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Nonvolatile memory. The digital sender uses nonvolatile memory (NVRAM) to store I/O
information and other permanent information, such as page counts and serial number. The
contents of NVRAM are retained when the digital sender is turned off or disconnected.
Control panel
The control panel contains both touchscreen and hard keys, and sends user commands to the formatter.
Keyboard
The keyboard tray contains a keyboard for entering e-mail addresses and other data.
Scanner controller board
The scanner controller board sends data to the formatter and receives commands from the formatter.
The scanner controller board controls motors, fans, and sensors.
Engine control system
Engine power supply circuit
The power supply consists of a low-voltage circuit. The low-voltage circuit provides uninterrupted 5 volt
(V) and 3.3 V power to the formatter, and provides 24 V, 5 V, and 3.3 V power to the scanner controller
board.
28 Chapter 4 Theory of operation ENWW