Ricoh Aficio MP C2550 User Manual (English)

Questions and Answers:

J
Jon AdkinsAug 18, 2025
Why authentication has failed on my Ricoh All in One Printer?
- A
  alexissteeleAug 18, 2025
  Authentication may fail on your Ricoh All in One Printer because: * The login user name or password may be incorrect. Contact your user administrator to verify your credentials. See the error codes B,W,L,I 0104-000, B,W,L,I 0206-003, or W,L,I 0406-003 for additional help. * The maximum number of registered users may have been reached. Delete unnecessary user addresses. See error code W,L,I 0612-005 for possible solutions. * There may be an issue accessing the authentication server when using Windows, LDAP, or Integration Server Authentication. Confirm the network with your LAN administrator. Refer to the error code table for specific instructions.
E
Edward LopezAug 20, 2025
What to do if my Ricoh Aficio MP C2550 All in One Printer says I do not have the privileges to use this function?
- G
  Gina NunezAug 21, 2025
  If your Ricoh All in One Printer indicates that you lack the necessary privileges, it means the function you're trying to use hasn't been authorized for your account. If this occurs when using a function, the function isn't enabled in the Address Book management settings. The user administrator needs to authorize the function and assign the appropriate permissions. If this appears when specifying a default setting, the appropriate administrator must authorize the function based on the settings you're trying to adjust.
D
Denise WolfeAug 23, 2025
What to do if my Ricoh All in One Printer says 'Failed to decrypt password'?
- D
  David WilliamsAug 23, 2025
  If your Ricoh All in One Printer is failing to decrypt the password, there are several potential causes: 1. A password error occurred, so ensure you've entered the password correctly. 2. 'Restrict Use of Simple Encryption' is enabled, meaning the administrator has restricted simple encryption. If this is the case, use the encryption key specified in the driver. 3. A driver encryption key error occurred. Verify that the encryption key is correctly specified on the driver.
W
wolfjamesAug 26, 2025
What does it mean when my Ricoh Aficio MP C2550 All in One Printer says Administrator Authentication for User Management must be set to on before this selection can be made?
- J
  javier36Aug 26, 2025
  This message on your Ricoh All in One Printer indicates that administrator authentication is not configured under "Administrator Authentication Management." To use Basic Authentication, Windows Authentication, LDAP Authentication, or Integration Server Authentication, you must first configure administrator authentication. Refer to "Authentication Setting Procedure" for details on authentication settings.
M
marilynwheelerAug 28, 2025
What to do if my Ricoh Aficio MP C2550 says 'A user attempted authentication from an application on the "System Settings" screen, where only the administrator has authentication ability'?
- K
  kevin72Aug 28, 2025
  This message on your Ricoh All in One Printer means that only the administrator has login privileges on the System Settings screen. Log in as a general user from the application's login screen instead.
A
Amy GibbsAug 30, 2025
What to do if my Ricoh Aficio MP C2550 All in One Printer says 'The account is locked because you have reached the maximum number of failed authentication attempts allowed'?
- W
  Wendy SmithAug 30, 2025
  If your Ricoh All in One Printer displays this message, contact your user administrator to unlock the account.
L
lopezwilliamSep 1, 2025
What to do if my Ricoh All in One Printer says 'Failed to obtain URL'?
- K
  Kevin DownsSep 1, 2025
  If your Ricoh All in One Printer displays a 'Failed to obtain URL' error, it means the device can't connect to the server. Here's what you should do: * First, ensure the server's settings, including the IP address and host name, are correctly configured on the printer. Also, verify that the UA Server's host name is accurate. * Next, confirm that the UA service is correctly specified, as the service may not be responding properly. * If you're using SSL, ensure it's correctly specified on the server using Authentication Manager. * Finally, check that server authentication is correctly configured on the printer.
R
Robin AllisonSep 3, 2025
What to do if my Ricoh Aficio MP C2550 All in One Printer says 'The selected file(s) contained file (s) without access privileges. Only file(s) with access privileges will be deleted.'?
- M
  Matthew SimpsonSep 4, 2025
  This message from your Ricoh All in One Printer means you're trying to delete files without the necessary permissions. Only the file creator (owner) or a file administrator can delete files. If you need to delete a file you're not authorized to, contact the file creator (owner).
D
dunnamandaSep 6, 2025
What to do if my Ricoh Aficio MP C2550 says 'A TWAIN operation occurred during authentication'?
- M
  Michael WalterSep 6, 2025
  If your Ricoh All in One Printer displays this message, ensure that no other user is currently logged on to the machine, and then try the operation again.
C
Crystal FoxSep 8, 2025
What to do if my Ricoh Aficio MP C2550 says 'A login user name was not specified but a DeskTopBinder operation was performed'?
- M
  Meghan RichardsSep 8, 2025
  Make sure to specify the DeskTopBinder login user name correctly on your Ricoh All in One Printer.

Ricoh Aficio MP C2550 Specifications

General

Print Technology	Laser
Functions	Print, Copy, Scan, Fax
Print Speed (Color)	25 ppm
Print Speed (Monochrome)	25 ppm
Print Resolution	600 x 600 dpi
Maximum Print Resolution	2400 x 600 dpi
Duplex Printing	Yes
Copy Speed (Color)	25 cpm
Copy Speed (Monochrome)	25 cpm
Copy Resolution	600 x 600 dpi
Memory (Maximum)	1 GB
Hard Disk Drive (Optional)	80 GB
Interface	USB 2.0, Ethernet 10/100Base-TX
Fax Transmission Speed	33.6 Kbps
Maximum Paper Size	A3
Scan Resolution	600 dpi
Zoom Range	25% - 400%
Paper Size	A4, A5, B5
Paper Weight	52 - 256 g/m²
PDL	PCL 6, PostScript 3
Network Connectivity	Ethernet
Operating System Compatibility	Windows, Mac OS

Summary

1 Getting Started

Before Using the Security Functions

Essential precautions and preparation steps before configuring security features.

Setting Up the Machine

Steps to configure the machine for enhanced security, including encryption and administrator accounts.

Enhanced Security

How to improve machine security using authentication and access control functions.

Security Measures Provided by this Machine

Overview of security features like authentication, access limits, and data encryption.

2 Administrators/Authentication and Its Application

Administrators

Details on different administrator roles (User, Machine, Network, File) and their responsibilities.

User Administrator

Specific role of the user administrator in managing Address Book information and user accounts.

Machine Administrator

Role of the machine administrator in managing default settings and machine security.

Network Administrator

Role of the network administrator in managing network settings and security.

File Administrator

Role of the file administrator in managing access permissions for stored files.

Supervisor

Role of the supervisor in managing administrator passwords and providing support.

About Administrator Authentication

Explanation of how administrators are authenticated using login credentials.

Enabling Administrator Authentication

Procedure to enable administrator authentication for controlling access and settings.

Specifying Administrator Privileges

How to assign specific privileges to administrators for managing machine settings.

3 Users/Authentication and Its Application

Users

Describes users' roles and how their access is managed by administrators.

About User Authentication

Explains the user authentication function for preventing unauthorized access using login credentials.

Authentication Setting Procedure

Guide to specifying administrator and user authentication methods, including external devices.

Enabling User Authentication

Steps to enable user authentication methods like User Code, Basic, Windows, LDAP, and Integration Server.

User Code Authentication

Method to limit access to functions based on a user code.

Basic Authentication

Authentication method using the Address Book to authenticate users and manage access.

Windows Authentication

Authentication using Windows domain controller for users with directory server accounts.

LDAP Authentication

Authentication using an LDAP server for users with accounts on that server.

Integration Server Authentication

Authentication using a server with ScanRouter software for centralized user authentication.

4 Protecting Document Data Information from Leaks

Preventing Unauthorized Copying

Embedding patterns in printed documents to discourage or prevent unauthorized copying.

Data Security for Copying

Embedding hidden text to prevent document information leaks by graying out copies.

Printing a Confidential Document

Using the Locked Print function to store and print confidential documents securely.

Specifying Access Permission for Stored Files

Defining access permissions (Read-only, Edit, etc.) for files stored in the Document Server.

Assigning Users and Access Permission for Stored Files

Specifying which users or groups have access to specific stored files.

Specifying Passwords for Stored Files

Setting passwords for stored files to enhance protection against unauthorized use.

Unlocking Files

How to unlock files that have been locked by the "Enhance File Protection" feature.

5 Protecting Information Transmitted Through the Network or Stored on the Hard Disk from Leaks

Preventing Data Leaks Due to Unauthorized Transmission

Measures to prevent data leaks during transmission, including restricting destinations.

Restrictions on Destinations

Limiting destinations for faxes and emails to registered entries in the Address Book.

Using S/MIME to Protect Email Transmission

Using S/MIME for encrypted email transmission and sender verification with digital signatures.

E-mail Encryption

Steps to encrypt email messages using S/MIME and user certificates.

Protecting the Address Book

Securing Address Book data through access permissions and encryption.

Encrypting Data in the Address Book

Enabling the encryption of Address Book data for enhanced security.

Encrypting Data on the Hard Disk

Encrypting data stored on the hard disk to prevent information leakage.

Enabling the Encryption Settings

Procedure to enable data encryption settings for the hard disk.

Printing the Encryption Key

How to print the encryption key for backup and recovery purposes.

Updating the Encryption Key

Procedure to update or change the encryption key for data on the hard disk.

Canceling Data Encryption

How to disable data encryption settings.

Deleting Data on the Hard Disk

Overwriting and erasing data from the hard disk for secure disposal.

Using Auto Erase Memory

Automatically erasing temporary data from the hard disk.

Erase All Memory

Erasing all data on the hard disk, including settings and user data.

6 Managing Access to the Machine

Preventing Modification of Machine Settings

Restricting changes to machine settings by users, controlled by administrator types.

Menu Protect

Limiting user access to machine settings menus and functions based on protection levels.

Set up Menu Protect

Configuring menu protection levels ([Off], [Level 1], [Level 2]) for users.

Limiting Available Functions

Specifying which functions are accessible to registered users.

Managing Log Files

Overview of job and access logs for monitoring machine usage and security events.

7 Enhanced Network Security

Preventing Unauthorized Access

Limiting network access by IP address, ports, or protocols to prevent unauthorized entry.

Enabling/Disabling Protocols

Enabling or disabling network protocols (IPv4, IPv6, IPsec, FTP, etc.) to enhance security.

Access Control

Configuring IP address ranges to control access to the machine over the network.

Specifying Network Security Level

Setting the overall network security level ([Level 0], [Level 1], [Level 2]) to protect confidential information.

Encrypting Transmitted Passwords

Encrypting passwords for transmission to prevent them from being analyzed.

Protection Using Encryption

Establishing encrypted communication using SSL, SNMPv3, and IPsec.

SSL (Secure Sockets Layer) Encryption

Protecting communication paths and establishing encrypted connections using SSL certificates.

SNMPv3 Encryption

Encrypting transmitted data using SNMPv3 for protection against tampering.

Transmission Using IPsec

Securing data packets using IPsec for secure communication.

8 Specifying the Extended Security Functions

Specifying the Extended Security Functions

Overview of extended security features for enhancing machine security beyond basic functions.

Restrict Adding of User Destinations

Preventing users from directly adding destinations for fax/scanner transmissions.

Enhance File Protection

Locking files and making them inaccessible after multiple incorrect password attempts.

Service Mode Lock

Locking service mode to prevent unauthorized access for inspection or repair.

9 Troubleshooting

Authentication Does Not Work Properly

Solutions for issues related to user authentication failures and error messages.

An Error Code Appears

Lists error codes related to authentication failures, their causes, and resolution steps.

Machine Cannot Be Operated

Solutions for scenarios where the machine cannot be operated due to authentication or other issues.

10 Appendix

Supervisor Operations

How supervisors can manage administrator passwords and accounts.

Machine Administrator Settings

Details of settings configurable by the machine administrator.

Network Administrator Settings

Configuration options available to the network administrator.

File Administrator Settings

Settings configurable by the file administrator.

User Administrator Settings

Settings configurable by the user administrator.

Document Server File Permissions

Defines authorities for accessing and managing files stored in the Document Server.

The Privilege for User Account Settings in the Address Book

Details the privileges for user account settings within the Address Book.

Copier / Document Server Features

Settings related to copier and document server features, controllable via menu protect levels.

Printer Features

Details of printer features and their accessibility based on menu protect levels.

Scanner Features

Settings related to scanner functions and their availability based on menu protect levels.

Facsimile Features

Settings related to facsimile features, controllable via menu protect levels.

System Settings

Overview of system settings and their availability based on user authorization and available functions.

Interface Settings

Configuration of network interface settings like Ethernet, Bluetooth, and Wireless LAN.

Network

Network configuration settings including IPv4, IPv6, NetWare, AppleTalk, SMB, Bonjour, and Security configurations.

User Authentication Management

Settings for various user authentication methods (User Code, Basic, Windows, LDAP, Integration Server).

LDAP Server

Settings related to configuring and managing the LDAP server.

Printer

Details of printer settings and their availability based on menu protect levels.

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