Xerox Understanding Diagnostic Mode and Service Mode for Efficient Troubleshooting
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XEROX WorkCentre 5735/5740/5745/5755/5765/5775/5790 Information Assurance Disclosure Paper

3.4.Diagnostics

3.4.1.Service [All product configurations]

To access onboard diagnostics from the local user interface, Xerox service representatives must enter a unique 4-digit password. This PIN is the same for all product configurations and cannot be changed.

For additional security, a Xerox authorized service representative can enable a “secure diagnostics” mode. In this mode, the service representative must enter two PINs to access onboard diagnostics. When enabling the secure diagnostics mode for the first time, the service representative should change the PIN to something known only to him or his local team. On subsequent logins, the secure diagnostics PIN must be entered followed by the standard diagnostics PIN in order to gain access to the diagnostics menu.

3.4.2. Alternate Boot via Serial Port

Alternate Boot (Alt-boot) is a means for the Portable Service Workstation (PSW) to directly connect to the controller. The primary purpose of Alternate Boot is to provide the capability to boot the controller in case of hard disk failure, to perform system diagnostics, and load controller software, independent of other sub-systems.

To enter this mode a user must strike any key on the PSW within 10 seconds of power on. If the 10 seconds times out, then the normal boot sequence occurs and the serial port acts as a typical tty (see next section). However, if this mode is entered, a Xerox unique serial protocol is used to communicate to the alt-boot code. All commands are DOS-type menu driven (i.e. type in a number to start a command). If a PSW is connected, the application on the PSW cannot be accessed without logging on with a password (see next section).

If the PSW is used and is successfully logged on, then the Ethernet port is used to download executable files. The serial port is used for commands and status. Again, please refer to the PSW section for details.

3.4.3. tty Mode

When the controller has completed booting a login line will be displayed. This mode is a typical tty window, and is password protected. This password changes with each major software release. The password is stored on the controller hard disk in an encrypted format similarly to how UNIX encrypts and stores passwords. Through this port a user can gain information and access to any files or information stored in the controller DRAM or controller hard disk. However, this mode is only used by a CSE if directed by a Field Engineer when all other diagnostics fail to solve a problem. The written repair procedures that direct the CSE never employ this mode.

3.4.4. Diagnostics via Portable Service Workstation (PSW) Port

When connected to the PSW Port, the PSW provides an extensive suite of diagnostic functions for use by the Xerox Customer Service Engineer (CSE). The over-the-wire protocol is Xerox proprietary. This port cannot process any other protocol except this proprietary protocol used for machine diagnosis. Also, the PSW must have an application loaded to connect to and communicate with the device.

Customer documents or files cannot be accessed during a diagnostic session, nor are network servers accessible through this port.

Ver. 2.00, March 2011

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Contents Xerox WorkCentre Page Device Description Target AudienceSecurity Aspects of Selected Features Purpose Target AudienceDisclaimer Physical Partitioning Security-relevant SubsystemsSecurity Functions allocated to Subsystems System functional block diagramSecurity Functions allocated to Subsystems ControllerPurpose Memory ComponentsHard Disk Drives Controller memory componentsExternal Connections USB PortsController External Connections USB Ports Fax ModuleScanner HardwareScanner memory components Graphical User Interface GUIOS Layer in the Controller System Software StructureControl and Data Interfaces Open-source componentsController Operating System layer components IPv4 Network Protocol Stack Network ProtocolsIPSec Logical AccessPort 68, Dhcp PortsPort 25, Smtp Port 53, DNSServer Port 80, HttpPort 110, POP-3 Client Port 88, KerberosPort 396, Netware Ports 137, 138, 139, NetbiosPorts 161, 162, Snmp Port 389, LdapIP Filtering Authentication Model System AccessAuthentication and Authorization schematic Kerberos Authentication Solaris or Windows 2000/Windows Login and Authentication MethodsSystem Administrator Login All product configurations User authenticationDomain Controller System Accounts Printing Multifunction models onlyNetwork Scanning Multifunction models only Tty Mode DiagnosticsService All product configurations Alternate Boot via Serial PortAccess Accessible Data Summary Audit Log Security Aspects of Selected FeaturesIfax Event Event description Entry Data SSL System startup Device name Device serial number Ifax Event Event description Entry Data SSL Xerox Standard Accounting Automatic Meter Reads Encrypted PartitionsImage Overwrite Algorithm User BehaviorOverwrite Timing Responses to Known Vulnerabilities Appendix a Abbreviations System Administrator Non-Volatile Random Access MemoryPortable Service Workstation Printed Wire Board AssemblyAppendix B Supported MIB Objects Term DefinitionSnmp version / Network Transport support WorkCentre RFC 1759 Printer MIB Group WorkCentre RFC 1514 Host Resources MIB group WorkCentreRFC 1213 MIB-II for TCP/IP group WorkCentre Additional Capabilities / Application Support WorkCentre RFC/Standard Appendix C -StandardsController Hardware Controller SoftwarePrinting Description Languages Appendix E References
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5790, 5755, 5775, 5735, 5740 specifications

The Xerox 5790, 5760, and 5765 are part of Xerox's well-known line of multifunction printers (MFPs), designed to meet the needs of businesses looking for efficient, high-volume printing, copying, and scanning solutions. These models provide a blend of advanced technology and user-friendly features, making them ideal for offices that demand speed and reliability.

The Xerox 5790 is a standout model in this series, offering exceptional printing speeds of up to 90 pages per minute. It features a robust paper handling system capable of accommodating various media sizes and types, including both standard and custom formats. This model integrates advanced imaging technology, providing high-quality output with sharp text and vibrant colors, thanks to its high resolution of up to 1200 x 1200 dpi.

The 5760 and 5765 models, while slightly lower in terms of speed – with the 5765 reaching up to 65 pages per minute – still maintain impressive performance levels suitable for medium to large-sized businesses. Both devices utilize Xerox's innovative EA toner technology, which delivers fine details and smooth gradients, making them particularly effective for graphics-intensive documents.

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In addition to their powerful performance, these models also come equipped with various security features, such as secure print, user authentication, and data encryption, ensuring sensitive information remains protected. With their strong emphasis on sustainability, Xerox has designed these printers to be energy-efficient and equipped with features aimed at reducing paper waste, such as duplex printing.

In conclusion, the Xerox 5790, 5760, and 5765 multifunction printers combine speed, quality, and advanced technology, making them excellent choices for businesses looking to enhance productivity and workflow. Their range of features and capabilities ensures they can meet the demands of various office environments, all while maintaining a commitment to sustainability and security.
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