Canon imageCLASS LBP121dn

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* When you select [On], the printing speed may decrease.

Troubleshooting

277

Main Page

Table of Contents2
About the Machine9
Supported Functions10
System Manager ID and PIN11
Measures to Prevent Unauthorized Access12
Names of Parts and Their Functions14
Front Side15
Rear Side16
Operation Panel17
Paper Drawer19
Usable Paper20
Precautions When Handling Paper23
Specifications24
Basic Specifications25
Print Specifications27
Network Specifications28
Security and Management Function Specifications29
Supported Environment32
Recommended Functions33
Cost Savings34
Making Operations more Efficient35
Setting up37
Configuring the Default Settings (Setup Guide)38
Setting up the Network41
Selecting Wired or Wireless LAN43
Connecting to a Wired LAN44
Connecting to a Wireless LAN45
Connecting to a Wireless LAN by Using the Router Button (Push Button Mode)48
Connecting to a Wireless LAN by Entering a PIN Code (WPS PIN Code Mode)50
Connecting to a Wireless LAN by Searching for a Router (Access Point Setup Method)52
Connecting to a Wireless LAN by Setting the Details (Manual Setup Method)54
Setting Ipv4 Addresses57
Setting Ipv6 Addresses59
Configuring Your Machine for Your Network Environment61
Manually Configuring the Ethernet Settings62
Configuring DNS63
Configuring SMB66
Configuring WINS67
Configuring SNMP68
Configuring SNTP71
Checking the Network Status and Settings73
Installing Software and Drivers to the Computer76
Basic Operations78
Turning on and off the Machine79
Turning on the Machine80
Turning off the Machine81
Restarting the Machine82
Reducing Power Consumption (Sleep Mode)83
Using the Operation Panel85
Screens Displayed on the Operation Panel85
Screens Displayed on the Operation Panel86
How to Operate the Operation Panel91
Entering Characters92
Logging in to the Machine93
Loading Paper94
Loading Paper in the Paper Drawer95
Preparations and Orientation for Loading Envelopes97
Orientation for Loading Paper with a Logo99
Specifying the Paper Size and Type101
Setting the Paper Size and Type for the Paper Drawer102
Registering Non-Standard Size Paper (Custom Paper)104
Hiding Unused Paper Sizes106
Printing108
Printing Preparations109
Preparing to Print from a Computer110
Configuring a Printer Port (Windows)111
Setting up a Print Server114
Preparations for Using Universal Print117
Registering the Machine to Cloud Service118
Registering the Machine to the Computer121
Printing from a Computer122
Registering Non-Standard Size Paper to the Computer (Custom Size)125
Printing with Universal Print127
Canceling Printing128
Viewing the Print Job Status and Log130
Linking with Mobile Devices132
Preparations for Linking with Mobile Devices133
Preparations for Direct Connection134
Preparations for Using Airprint136
Connecting a Mobile Device to the Machine139
Connecting a Mobile Device Via Wireless LAN Router (LAN Connection)140
Connecting a Mobile Device Directly to the Machine (Direct Connection)141
Using a Dedicated Application to Print (Canon PRINT Business)143
Using Airprint Application to Print Data144
Printing from an Android Device147
Printing from Chromebook or Other Device with Chrome os148
Security150
Setting the Department ID and PIN for the Administrator151
Protecting the Network153
Setting the Firewall154
Changing the Port Number157
Using a Proxy158
Using TLS160
Using IEEE 802.1X162
Managing and Verifying a Key and Certificate164
Generating a Key and Certificate165
Generating a Key and Certificate Signing Request (CSR) and Obtaining and Registering a Certificate167
Registering a Key and Certificate or CA Certificate Obtained from an Issuing Authority170
Verifying a Received Certificate with OCSP172
Preventing Leaking Information173
Preventing Unauthorized Use174
Restricting Use of Remote UI175
Restricting Use from a Mobile Device177
Preventing Connection to Computer Via USB Port178
Configuring LPD, RAW, or WSD179
Disabling HTTP Communication181
Managing the Machine183
Setting the Date and Time184
Managing the Machine from a Computer (Remote UI)185
Starting Remote UI186
Portal Page of Remote UI188
Checking Usage and Logs with Remote UI190
Monitoring the Usage192
Printing and Viewing Reports and Lists193
Changing the Report and List Print Settings195
Updating the Firmware196
Initializing the Settings and Data199
Checking the Number of Printed Pages (Check Counter)201
Settings Menu Items203
[Preferences]204
[Display Settings]205
[Timer/Energy Settings]208
[Network]210
[Wireless LAN Settings]215
[TCP/IP Settings]217
[External Interface]223
[Accessibility]224
[Adjustment/Maintenance]226
[Adjust Image Quality]227
[Special Processing]228
[Maintenance]232
[Function Settings]233
[Common]234
[Paper Feed Settings]235
[Print Settings]236
[Printer]237
[Printer Settings]238
[Management Settings]245
[User Management]247
[Device Management]248
[Remote UI Settings/Update Firmware]251
[Remote UI Settings]252
[Data Management]253
[Security Settings]254
[Authentication/Password Settings]255
Maintenance257
Cleaning the Machine259
Cleaning the Surface of the Machine260
Cleaning the Fixing Assembly261
Cleaning the Drum262
Replacing Consumables263
Replacing the Toner Cartridge264
Checking the Remaining Amount of Consumables269
List of Consumables270
Adjusting the Print Density272
Moving the Machine273
Troubleshooting277
Paper Jams278
Paper Jams in the Paper Drawer, Output Tray, and Rear Side279
Paper Jams that Occur Repeatedly283
Problems with Printing Results285
Toner Smudges and Splatters Appear287
Streaks Appear288
Printing Is Uneven290
Smudge Marks Appear on the Edge of Printouts292
Text or Images Are Blurry293
Printouts Have Ghost Images294
Printouts Are Faded296
The Edge of the Page Is Not Printed298
The Background Is Generally Dark299
White Spots Appear300
Smudge Marks Appear on the Back Side of Printouts302
Printouts Are Skewed303
The Printed Barcode Cannot be Scanned304
Paper and Paper Feeding Problems305
Paper Creases306
Paper Curls307
Paper Is Not Fed or Two or more Sheets Are Fed Together308
Printed Paper Sticks Together309
Setting up310
The Machine Connected Via WSD Port Is Not Displayed During Driver Installation311
Cannot Connect to Wireless LAN312
Network313
Cannot Switch to Wireless LAN314
Cannot Find the Print Server to Connect to315
Cannot Connect to a Shared Printer316
Cannot Find the IP Address of the Machine317
Airprint Does Not Work318
Printing319
Cannot Print320
Cannot Print (Wireless LAN)321
Cannot Print (Wired LAN)323
Cannot Print (USB Connection)324
Cannot Print (Via Print Server)325
Printing Is Slow326
Management Functions and Environment Settings327
Cannot Access Remote UI328
Changing the Time until Sleep Mode329
Lost Department ID or PIN for the Administrator330
Checking the Items that Can be Configured on the Machine and Their Settings331
A Message Appears332
An Error Code Is Displayed343
If the Problem Persists346
Appendix348
Manuals of the Machine349
Using the User's Guide350
Manual Display Settings353
Operation Examples When Using a Computer354
Environmental Information, Regulations, and Standards364
Notice365
Trademarks and Copyrights366
Third-Party Software368
Adobe PDF Scan Library372
Expat375
Net-SNMP376
Xkcp388

Canon imageCLASS LBP121dn - Page 284

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