Canon LBP251 - Page 221

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Click [Department ID Management] [Edit].

Clear the [Allow Print Jobs with Unknown IDs] check box and click [OK].

LINKS

Setting Access Privileges(P. 206)

Setting the System Manager ID(P. 207)

Security

215

Main Page

Table of Contents2
Important Safety Instructions8
Installation9
Power Supply11
Handling12
Maintenance and Inspections15
Consumables16
Basic Operations20
Parts and Their Functions22
Front Side23
Back Side25
Interior27
Multi-Purpose Tray28
Paper Drawer29
Operation Panel30
Display33
Using the Operation Panel36
Entering Text38
Logging on to the Machine40
Loading Paper41
Loading Paper in the Paper Drawer43
Loading Paper in the Multi-Purpose Tray47
Loading Envelopes50
Loading Preprinted Paper52
Specifying Paper Size and Type56
Specifying Paper Size and Type in the Paper Drawer57
Specifying Paper Size and Type in the Multi-Purpose Tray59
Registering Default Paper Settings for the Multi-Purpose Tray61
Registering a Custom Paper Size63
Limiting the Paper Sizes Displayed66
Saving Energy67
Entering Sleep Mode68
Powering off at a Fixed Time70
Setting Auto Shutdown Time72
Printing74
Basic Printing Operations76
Canceling Prints81
Checking the Printing Status and Log84
Various Print Settings86
Enlarging or Reducing88
Switching 1-Sided and 2-Sided Printing90
Collating Printouts by Page92
Printing Multiple Pages Onto One Sheet94
Printing Posters96
Printing Booklet97
Printing Borders99
Printing Dates and Page Numbers100
Printing Watermarks102
Printing Specific Pages Onto Different Paper104
Selecting Document Type106
Saving Toner108
Combining and Printing Multiple Documents110
Configuring Printer Settings on the Machine114
Printing a Document Secured by a PIN (Secure Print) (Lbp252Dw)115
Preparing for Using Secure Print116
Printing Via Secure Print118
Configuring Print Settings to Your Needs123
Registering Combinations of Frequently Used Print Settings124
Changing Default Settings126
Can be Used Conveniently with a Mobile Device129
Connecting to a Mobile Device130
Make Direct Connection (Access Point Mode)131
Making the Best Use of the Machine by Utilizing Applications133
Managing the Machine Remotely135
Network137
Connecting to a Network138
Selecting Wired LAN or Wireless LAN140
Connecting to a Wired LAN141
Connecting to a Wireless LAN142
Setting up Connection Using WPS Push Button Mode144
Setting up Connection Using WPS PIN Code Mode146
Setting up Connection by Selecting a Wireless Router149
Setting up Connection by Specifying Detailed Settings152
Checking the SSID and Network Key156
Setting IP Addresses159
Setting Ipv4 Address160
Setting Ipv6 Addresses163
Viewing Network Settings167
Configuring the Machine for Printing from a Computer170
Configuring Printing Protocols and WSD Functions171
Configuring Printer Ports174
Setting up Print Server179
Configuring the Machine for Your Network Environment182
Configuring Ethernet Settings183
Changing the Maximum Transmission Unit185
Setting a Wait Time for Connecting to a Network186
Configuring DNS187
Configuring WINS192
Configuring SNTP194
Monitoring and Controlling the Machine with SNMP197
Configuring Settings for Device Management Software202
Security208
Protecting the Machine from Unauthorized Access209
Preventing Unauthorized Access210
Setting Access Privileges212
Setting the System Manager ID213
Setting the Department ID Management215
Setting a Remote UI PIN222
Restricting Communication by Using Firewalls224
Specifying IP Addresses for Firewall Rules225
Specifying MAC Addresses for Firewall Rules229
Changing Port Numbers232
Setting a Proxy234
Restricting the Machine's Functions236
Restricting USB Functions237
Disabling HTTP Communication238
Disabling Remote UI239
Implementing Robust Security Features240
Enabling SSL Encrypted Communication for the Remote UI241
Configuring Ipsec Settings245
Configuring IEEE 802.1X Authentication254
Configuring Settings for Key Pairs and Digital Certificates259
Generating Key Pairs260
Using CA-Issued Key Pairs and Digital Certificates268
Verifying Key Pairs and Digital Certificates272
Using Remote UI275
Starting Remote UI276
Remote UI Screens278
Managing Documents and Checking the Machine Status281
Setting up Menu Options from Remote UI285
Saving/Loading Registered Data287
Saving Registered Data288
Loading Registered Data290
Setting Menu List293
Paper Settings (Lbp252Dw)294
Direct Connection295
Network Settings296
Output Reports307
Preferences308
Timer Settings313
Common Settings317
Printer Settings319
Adjustment/Maintenance338
System Management Settings343
Troubleshooting354
Clearing Jams356
When an Error Message Appears363
When an Error Code Appears372
Common Problems374
Installation/Settings Problems375
Printing Problems379
When You Cannot Print Properly382
Printing Results Are Not Satisfactory384
Paper Creases or Curls391
Paper Is Fed Incorrectly393
When a Problem Cannot be Solved394
Maintenance396
Cleaning the Machine398
Exterior399
Fixing Unit400
Replacing Toner Cartridges402
Using up Toner404
How to Replace Toner Cartridges406
Relocating the Machine408
Maintaining and Improving Print Quality410
Adjusting Print Density411
Adjusting Print Position413
Printing Reports and Lists415
Consumables Status Report416
User Data List/System Manager Data List417
Department ID Management Report418
Ipsec Policy List419
PCL Font List420
PS Font List (Lbp252Dw)421
Viewing the Counter Value422
Using a USB Memory Device to Save/Load Registered Data423
Saving Registered Data to a USB Memory Device424
Loading Registered Data from a USB Memory Device426
Initializing Settings428
Initializing Menu429
Initializing Key and Certificate431
Appendix433
Feature Highlights434
Going Green and Saving Money435
Improving Efficiency437
So Much more439
Specifications442
Machine Specifications443
Wireless LAN Specifications445
Paper446
Consumables449
Optional Items450
Using Airprint451
Printing with Airprint455
If Airprint Cannot be Used457
Using Google Cloud Print458
Manuals Included with the Machine462
Using E-Manual463
Installing E-Manual464
Uninstalling E-Manual468
Screen Layout of E-Manual471
Viewing E-Manual476
Manual Display Settings478
Others479
Basic Windows Operations480
For Mac os Users487
Notice488
Office Locations493

Canon LBP251 - Page 221

Table of Contents

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