Lexmark C920 User Manual

							Enabling operator panel menus
131
Administrative support
Enabling operator panel menus
1Turn the printer off.
2Press and hold   and   while turning the printer on.
3Release both buttons when Performing Self Test appears on the display.
The printer performs its power-on sequence, and then Config Menu appears on the first line of the display.
4Press  until  Panel Menus appears, and then press  .
5Press  until  Enable appears, and then press  .
The following messages appear briefly in succession: Submitting Selection and Enabling Menus. 
The operator panel returns to Panel Menus.
6Press  until  Exit Config Menus appears, and then press  .
Activating Menu Changes appears. The menus are enabled.
Resetting the Printer appears briefly followed by a clock. The operator panel then returns to Ready.
Restoring factory default settings
When you first enter the printer menus from the operator panel, you may notice an asterisk (*) to the left of a value in the 
menus. This asterisk indicates the factory default setting. These settings are the original printer settings. (Factory defaults 
may vary for different regions.)
When you select a new setting from the operator panel, Submitting Selection appears. When the Submitting Selection 
message disappears, an asterisk appears next to the setting to identify it as the current user default setting. These settings 
are active until new ones are stored or the factory defaults are restored.
To restore the original printer factory default settings:
Warning:All downloaded resources (fonts, macros, and symbol sets) in printer memory (RAM) will be deleted. 
(Resources residing in flash memory or on the optional hard disk remain unaffected.)
1Make sure the printer is on and Ready appears on the display.
2Press   on the operator panel.
3Press  until  Settings appears, and then press  .
4Press  until  Setup Menu appears, and then press  .
5Press  until  Factory Defaults appears, and then press  .
6Press  until  Restore Now appears, and then press  .
7The message Restoring Factory Defaults appears, followed by the Ready message.
When you select Restore:
No other button actions are available on the operator panel while Restoring Factory Defaults appears.
All menu settings return to the factory default values, except:
–The operator panel Display Language setting in the Setup menu.
–All settings in the Parallel menu, Serial menu, Network menu, and USB menu.
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							Adjusting Power Saver
132
Administrative support
Adjusting Power Saver
To  a d j u s t  t h e Power Saver setting:
1Make sure the printer is on and Ready appears on the display.
2Press   on the operator panel.
3Press  until  Settings appears, and then press  .
4Press  until  Setup Menu appears, and then press  .
5Press  until  Power Saver appears, and then press  .
6Using the numeric pad or the right and left arrows on the operator panel, enter the number of minutes for the 
printer to wait before entering Power Saver.
The settings available range from 2–240 minutes.
7Press .
Submitting Selection appears.
Note:You can also adjust the Power Saver setting by issuing a Printer Job Language (PJL) command. For 
more information, see the Technical Reference available on our Lexmark Web site at 
www.lexmark.com.
Encrypting the disk
Warning:All resources on the hard disk will be deleted. (Resources residing in flash memory or in RAM remain 
unaffected.)
Note:This setting is only available when a hard disk is installed.
1Turn the printer off.
2Press and hold   and   while turning the printer on.
3Release both buttons when Performing Self Test appears on the display.
The printer performs its power-on sequence, and then Config Menu appears on the first line of the display.
4Press  until  Disk Encryption appears, and then press  .
5Press  until  Enable appears, and then press  .
Contents will be lost. Continue? appears.
6Press  until  Yes appears, and then press  .
The Encrypting Disk progress bar appears.
7When disk encryption has finished, press  .
8Press  until  Exit Config Menu appears, and then press  .
To disable disk encryption:
1Turn the printer off.
2Press and hold   and   while turning the printer on.
3Release both buttons when Performing Self Test appears on the display.
The printer performs its power-on sequence, and then Config Menu appears on the first line of the display.
4Press  until  Disk Encryption appears, and then press  .
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							Setting security using the Embedded Web Server (EWS)
133
Administrative support
5Press  until  Disable appears, and then press  .
Contents will be lost. Continue? appears.
6Press  until  Yes appears, and then press  .
The Encrypting Disk progress bar appears.
7When disk encryption has finished, press  .
8Press  until  Exit Config Menu appears, and then press  .
Setting security using the Embedded Web Server (EWS)
You can enhance the security of network communications and device configuration by using the advanced security options. 
These features are available through the Web page of the device.
Setting the system password
Setting the system password protects configuration of the Embedded Web Server. A system password is also required for 
Secure mode and confidential communication with MVP.
To set the system password:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http: //ip_address/.
2Click Configuration.
3Under Other Settings, click Security.
4Click Create Password, if one has not been set previously. If a password has already been set, click Change or 
Remove Password.
Using the secure Embedded Web Server
The SSL (Secure Sockets Layer) allows for secure connections to the Web server within the print device. You can connect 
to the Embedded Web Server more securely by connecting to the SSL port instead of the default HTTP port. The SSL port 
connection will encrypt all Web server network communications between the PC and the printer. To connect to the SSL 
port:
Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the format: 
https: //ip_address/.
Supporting SNMPv3 (Simple Network Management Protocol version 3)
SNMPv3 protocol allows for encrypted and authenticated network communications. It also lets the administrator select a 
desired level of security. Prior to use, at least one user name and password must be established from the settings page. To 
configure for SNMPv3 through the Embedded Web Server of the printer:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Network/Ports.
4Click SNMP.
SNMPv3 authentication and encryption has three levels of support:
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							Setting security using the Embedded Web Server (EWS)
134
Administrative support
No authentication and no encryption
Authentication with no encryption
Authentication and encryption
Note:Only the selected level and later may be used to communicate.
Supporting IPSec (Internet Protocol Security)
IP Security protocol provides authentication and encryption of communications at the network layer allowing all application 
and network communications over the IP protocol to be secure. IPSec can be set up between the printer and up to five 
hosts, using both IPv4 and IPv6. To configure IPSec through the Embedded Web Server: 
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Network/Ports.
4Click IPSec.
Two types of authentication are supported for IPSec:
Shared Key Authentication—Any ASCII phrase shared among all the participating hosts. This is the easiest way 
to configure when only a few hosts on the network use IPSec.
Certificate Authentication—Allows any hosts or subnet of hosts to authenticate for IPSec. Each host must have 
a public/private key pair. Validate Peer Certificate is enabled by default, requiring each host to have a signed 
certificate and the authority certificate must be installed. Each host must have its identifier in the Subject Alternate 
Name of the signed certificate.
Note:After a device is configured for IPSec with a host, IPSec is required for any IP communication to take 
place. 
Using Secure mode
You can configure the TCP and UDP ports to one of three modes:
Disabled—Never allows network connections to this port.
Secure and Unsecure—Allows the port to remain open, even in Secure mode.
Unsecured Only—Allows the port to only open when the printer is not in Secure mode.
Note:A password must be set to enable Secure mode. Once enabled, only the ports set to Secure and 
Unsecure will be open.
To configure the Secure mode for TCP and UDP ports from the Embedded Web Server:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Network/Ports.
4Click TCP/IP Port Access.
Note:Disabling ports will disable function on the printer.
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							Setting security using the Embedded Web Server (EWS)
135
Administrative support
Using 802.1x Authenticating
802.1x port authentication allows the printer to join networks that require authentication before allowing access. 802.1x port 
authentication can be used with the WPA (Wi-Fi Protected Access) feature of an optional internal wireless print server to 
provide WPA-Enterprise security support.
Support for 802.1x requires the establishment of credentials for the printer. The printer must be known to the Authentication 
Server (AS). The AS will allow network access to devices presenting a valid set of credentials which typically involves a 
name/password combination and possibly a certificate. The AS will allow network access to printers presenting a valid set 
of credentials. You can manage the credentials by using the Embedded Web Server of the printer. To use certificates as 
part of the credentials:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Network/Ports.
4Click Certificate Management.
To enable and configure 802.1x on the Embedded Web Server after installing the required certificates:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Network/Ports.
4Click 802.1x Authentication.
Note:If an optional internal wireless print server is installed, click Wireless instead of 802.1x 
Authentication.
Locking the operator panel menus
Operator Panel Menu Lockout lets you create a PIN number and choose specific menus to lock. Each time a locked menu 
is selected, the user will be prompted to enter the correct PIN at the operator panel. The PIN does not affect any access 
through the EWS. To lock operator panel menus:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Security.
4Click Menu Lockout Setup.
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							Quick start mode
136
Administrative support
Printing Lockout
Printing Lockout lets you lock or unlock a printer using an assigned PIN. When locked, every job the printer receives will 
buffer to the hard disk. A user can print jobs only by entering the correct PIN on the operator panel. You can assign a PIN 
through the Web page of the device.
Note:This setting is only available when a hard disk is installed.
Note:Back channel data will be processed while the printer is locked. Reports such as user or event logs 
can be retrieved from a locked printer.
To set Printing Lockout:
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Security.
4Click Printer Lockout PIN.
Confidential Print Setup
Confidential Print Setup lets you designate a maximum number of PIN entry attempts and set an expiration time for print 
jobs. When a user exceeds a specific number of PIN entry attempts, all of that user’s print jobs are deleted. When a user 
has not printed their jobs within a designated time period, the print jobs are deleted. To activate Confidential Print Setup:
Note:This feature is only available on network models.
1Open your Web browser. In the address line, enter the IP address of the printer you want to configure using the 
for mat: http://ip_address/.
2Click Configuration.
3Under Other Settings, click Security.
4Click Confidential Print Setup.
Quick start mode
Quick start mode allows the printer to begin printing before the engine has warmed to normal operating temperature. With 
quick start, when the printer is in standby mode and receives a print job, pages print slowly at first, and then more quickly 
once the printer warms up. This reduces the overall time required to print a job from standby mode. Quick start is on by 
default. 
To turn quick start off:
1Press   on the operator panel.
2Press  until  Setup Menu appears, and then press  .
3Press  until  Quick Start appears, and then press  .
4Press  until  Off appears, and then press  .
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							Black only mode
137
Administrative support
Black only mode
In black only mode, all colors print in grayscale. The printer prints fastest when in black only mode. Black only mode is off by 
default. Be sure to select black only mode both in the driver and through the printer operator panel.
To turn on black only mode through the printer operator panel:
1Turn the printer off.
2Press and hold   and   while turning the printer on.
3Release both buttons when Performing Self Test appears on the display.
The printer performs its power-on sequence, and then Config Menu appears on the first line of the display.
4Press  until  Black Only Mode appears, and then press  .
5Press  until  On appears, and then press  .
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							Troubleshooting
138
10Troubleshooting
Online customer support
Customer support is available on our Lexmark Web site at www.lexmark.com.
Calling for service
When you call for printer service, describe the problem you are experiencing, the message on the display, and the 
troubleshooting steps you have already taken to find a solution.
You need to know your printer model type and serial number. See the label on the inside top front cover of the printer for this 
information.
The serial number is also listed on the menu settings page. See Printing the menu settings page for more information.
For service in the U.S. or Canada, call 1-800-Lexmark (1-800-539-6275). For other countries/regions, visit our Lexmark 
Web site at www.lexmark.com
Note:When calling for service, call from the location of the printer.
Checking an unresponsive printer
If your printer is not responding, first make sure:
The power cord is plugged into the printer and a properly grounded electrical outlet.
The electrical outlet is not turned off by any switch or breaker.
The printer is not plugged into any surge protectors, uninterrupted power supplies, or extension cords.
Other electrical equipment plugged into the outlet is working.
The printer is turned on.
The printer cable is securely attached to the printer and the host computer, print server, option, or other network 
device.
Once you have checked each of these possibilities, turn the printer off and back on. This often fixes the problem.
Printing multiple-language PDFs
SymptomCauseSolution
Some documents do not 
print.The documents contain 
unavailable fonts.1Open the document you want to print in Adobe Acrobat.
2Click the printer icon.
The Print dialog box appears.
3Check the Print as image box.
4Click OK.
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							Solving printing problems
139
Troubleshooting
Solving printing problems
SymptomCause Solution
The operator panel 
display is blank or 
displays only diamonds.The printer self test 
failed.Turn the printer off, wait about 10 seconds, and turn the printer 
back on.
If the Performing Self Test and Ready messages do not 
appear, turn the printer off and call for service.
The message Error 
reading USB drive 
appears when using a 
USB device.The USB device you are 
using may not be 
supported or has an 
error. Only specific USB 
flash memory devices 
are supported.For information regarding tested and approved USB flash memory 
devices, see our Lexmark Web site at www.lexmark.com.
Jobs do not print. The printer is not ready 
to receive data.Make sure
 Ready or Power Saver appears on the display before 
sending a job to print. Press   to return the printer to the Ready 
state.
The specified output bin 
is full.Remove the stack of paper from the output bin, and then press 
.
The specified tray is 
empty.Load paper in the tray.
You are using the wrong 
printer driver or are 
printing to a file. Verify you are using the printer driver associated with your 
printer.
 If you are using a USB port, make sure you are running 
Windows 98/Me, Windows 2000, Windows XP, or 
Windows Server 2003 and using a Windows 98/Me, 
Windows 2000, Windows XP, or Windows Server 2003 
compatible printer driver.
Your MarkNet N8000 
series internal print 
server is not set up 
properly or is not 
connected properly.Verify that you have properly configured the printer for network 
printing.
See the drivers CD or to our Lexmark Web site for information.
You are using the wrong 
interface cable, or the 
cable is not securely 
connected.Make sure you are using a recommended interface cable.
Make sure the connection is secure.
Held jobs do not print. A formatting error has 
occurred. Print the job. (Only part of the job may print.)
 Delete the job.
 Free up additional printer memory by scrolling through the list of 
held jobs and deleting others you have sent to the printer. The printer has 
insufficient memory.
The printer has received 
invalid data.Delete the job.
Job takes longer than 
expected to print.The job is too complex. Reduce the complexity of your print job by eliminating the number 
and size of fonts, the number and complexity of images, and the 
number of pages in the job.
Page Protect is set to 
On.Set Page Protect to Off from the Setup Menu.
For more information, see the Menus and Messages Guide.
Job prints from the 
wrong tray or on the 
wrong paper or specialty 
media.The operator panel menu 
settings do not match the 
media loaded in the tray.Make sure the Paper Size and Paper Type specified in the printer 
driver match the paper size and type in the tray.
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							Solving printing problems
140
Troubleshooting
Incorrect characters 
print.You are using an 
incompatible parallel 
cable.If you are using a parallel interface, make sure you are using an 
IEEE 1284-compliant parallel cable. We recommend Lexmark part 
number 1329605 (10 ft) or 1427498 (20 ft) for the standard parallel 
port.
The printer is in Hex 
Trace mode.If Ready Hex appears on the display, you must exit Hex Trace 
mode before you can print your job. Turn the printer off and back 
on to exit Hex Trace mode.
Tray linking does not 
work.Tray linking is not 
configured properly. Make sure both the size and type of media are the same in both 
trays.
 Make sure the paper guides in the trays are set for the correct 
size media.
 Make sure the menu values for both size and type are set 
correctly in the Paper Menu.
See Linking trays or see the Menus and Messages Guide for 
more information.
Large jobs do not collate. Collate is not set to On. Set Collation to On in the Finishing Menu or through the printer 
driver.
Note:Setting Collation to Off in the driver overrides the setting in 
the Finishing Menu.
See the Menus and Messages Guide for more information.
The job is too complex. Reduce the complexity of the print job by eliminating the number 
and size of fonts, the number and complexity of images, and the 
number of pages in the job.
The printer does not 
have enough memory.Add printer memory or an optional hard disk.
Unexpected page breaks 
occur.The job has timed out. Set Print Timeout to a higher value from the Setup Menu.
See the Menus and Messages Guide for more information.
SymptomCause Solution
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