XEROX WorkCentre 3550 Information Assurance Disclosure Paper
2.5.Local User Interface (LUI)
2.5.1.Purpose
The LUI detects hard button actuations, and provides text and graphical prompts to the user. Images are not transmitted to or stored in the LUI. The Start hard button is located on the LUI panel.
2.5.2. Hardware
Volatile Memory Description
Type (SRAM, DRAM, etc)
RAM
Size
2KB
User Modifiable (Y/N)
N
Function or Use
User Interface volatile memory; no user image data stored
Process to Clear:
Power Off System
Additional Information:
All memory listed above contains code for execution and configuration information. No user or job data is permanently stored in this location.
Type (Flash, EEPROM, etc)
PROM
Size
64KB
User Modifiable | Function or Use |
(Y/N) |
|
N | No user image data stored |
|
|
Process to Clear:
None
Additional Information:
All memory listed above contains code for execution and configuration information. No user or job data is stored in this location.
Table 6 User Interface memory components
2.6.Marking Engine (also known as the Image Output Terminal or IOT)
2.6.1.Purpose
The Marking Engine performs copy/print paper feeding and transport, image marking and fusing, and document finishing. Images are not stored at any point in these subsystems.
2.6.2. Hardware
The marking engine is comprised of paper supply trays and feeders, paper transport, laser scanner, xerographics, and paper output. The marking engine contains a CPU, BIOS, RAM and
2.6.3. Control and Data Interfaces
Images and control signals are transmitted from the main controller to the marking engine across a proprietary interface.
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