Lexmark C 750 Product information sheet

Lexmark C750
August 2001
User’s Reference

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Table of contents
Chapter 1: Printer overview ..............................................................5
Chapter 2: Understanding the printer operator panel ...................7
Operator panel buttons ........................................................................................ 7
Chapter 3: Sending a job to print .....................................................9
Chapter 4: Canceling a print job ....................................................10
Cancel a job from the printer operator panel ...................................................... 10
Cancel a job from the Windows taskbar ............................................................. 10
Cancel a job from a Windows desktop ............................................................... 10
Cancel a job from a Macintosh computer ........................................................... 11
Chapter 5: Conserving supplies ....................................................12
Chapter 6: Holding a job in the printer ..........................................13
Printing and deleting held jobs ........................................................................... 13
Accessing held jobs from the operator panel ..................................................... 14
Recognizing when format errors occur .............................................................. 14
Repeat Print ....................................................................................................... 15
Reserve Print ..................................................................................................... 15
Verify Print .......................................................................................................... 15
Confidential jobs ................................................................................................. 15
Chapter 7: Paper and specialty media specifications .................17
Chapter 8: Loading the trays ..........................................................18
Loading the 500-sheet trays ............................................................................... 18
Loading the 2000-sheet tray .............................................................................. 20
Chapter 9: Loading the multipurpose feeder ................................23

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Chapter 10: Linking trays ...............................................................25
Chapter 11: Linking bins ................................................................26
Chapter 12: Tips for successful printing ......................................27
Storing paper ...................................................................................................... 27
Storing supplies .................................................................................................. 27
Avoiding jams ..................................................................................................... 28
Chapter 13: Checking an unresponsive printer ...........................29
Chapter 14: Understanding jam messages ...................................30
Chapter 15: Solving print quality problems ..................................32
Chapter 16: Solving option problems ...........................................37
Chapter 17: Solving mailbox problems .........................................39
Chapter 18: Solving paper feed problems ....................................40
Chapter 19: Solving printing problems .........................................41
Chapter 20: Calling for service ......................................................44
Chapter 21: Configuring printer alerts ..........................................45
Chapter 22: Determining the status of supplies ...........................46
Chapter 23: Size Sensing ...............................................................47
Enabling size sensing ........................................................................................ 47
Size sensing and tray linking .............................................................................. 47
Disabling size sensing ........................................................................................ 48
Chapter 24: Ordering supplies and maintenance items ..............49
Chapter 25: Recycling used supplies ............................................51
Chapter 26: Other maintenance and
troubleshooting documents ............................................................52

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Chapter 27: Clearing image transfer unit jams .............................53
Chapter 28: Removing memory and option cards .......................59
Accessing the printer system board ................................................................... 59
Removing memory cards ................................................................................... 60
Removing an option card ................................................................................... 61
Removing a hard disk ........................................................................................ 61
Removing a firmware card ................................................................................. 62
Reinstalling the system board access cover ...................................................... 63
Chapter 29: Restoring factory default settings ............................64
Chapter 30: Disabling the operator panel menus ........................65
Enabling the menus ........................................................................................... 65
Chapter 31: Disabling Power Saver ...............................................66
Chapter 32: Changing menu settings ............................................67
Chapter 33: Printing a menu settings page ..................................68
Chapter 34: Printing sample fonts .................................................69
Chapter 35: Understanding printer messages .............................70
Chapter 36: Using printer menus .................................................118
Chapter 37: LocalTalk Menu .........................................................122
Chapter 38: Job Menu ...................................................................126
Chapter 39: Infrared Menu ............................................................129
Chapter 40: Finishing Menu .........................................................134
Chapter 41: Color Menu ................................................................141
Chapter 42: Utilities Menu ............................................................144
Chapter 43: USB Menu ..................................................................148

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Chapter 44: Supplies Menu ..........................................................151
Chapter 45: Setup Menu ...............................................................153
Chapter 46: Serial Menu ...............................................................162
Chapter 47: PostScript Menu .......................................................169
Chapter 48: PCL Emul Menu ........................................................171
Chapter 49: Parallel Menu ............................................................176
Chapter 50: Paper Menu ...............................................................181
Chapter 51: Network Menu ...........................................................190
Chapter 52: Understanding fonts ................................................194
Resident fonts .................................................................................................. 194
Symbol sets ...................................................................................................... 199
Downloadable fonts .......................................................................................... 199
Notices ............................................................................................201
Edition notice .................................................................................................... 201
Trademarks ...................................................................................................... 202
Licensing notice ............................................................................................... 204
Safety information ............................................................................................ 204
Cautions and warnings ..................................................................................... 205
Electronic emission notices .............................................................................. 205
Noise emission levels ....................................................................................... 208
Energy Star ...................................................................................................... 208
Laser notice ...................................................................................................... 208
Index ................................................................................................209

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1Printer overview
The following illustration shows the Lexmark™ C750 printer.
Standard
output bin
Front door
Standard tray
Upper right
access door
(redrive area)
Lower right
access door
(fuser area)

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The following illustration shows the printer configured with a duplex unit and three optional 500-sheet
drawers.
The following illustration shows the printer configured with a duplex unit, one optional 500-sheet
drawer, and one optional 2000-sheet drawer.
Duplex unit
500-sheet
drawers
500-sheet
drawer
2000-sheet
drawer
Duplex unit

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2Understanding the printer operator
panel
The operator panel has five buttons, a display, and a light that flashes when the printer is processing a
job indicated by the Busy message.
Operator panel buttons
Button Function
Go Press Go to:
•Return to the Ready state if the printer is offline (the Ready message does not appear on
the display).
•Exit printer menus and return to the Ready state.
•Clear some operator panel messages.
•Resume printing after loading paper or clearing paper jams.
•Exit Power Saver.
If you have changed printer settings from the operator panel menus, press Go before sending
a job to print. The printer must display Ready for jobs to print.
Menu Press Menu to:
•Take the printer offline (out of the Ready state) and enter the menus. When the printer is
offline, press Menu to scroll through the menus and menu items.
•List the menu items in the Job Menu (during Busy state).
For menu items that have numerical values, such as Copies, press and hold Menu to scroll
through the list of values. Release the button when the number you want appears.
If you see a Menus Disabled message, you will not be able to change default settings. You
can still clear messages and select items from the Job Menu when printing. When you send a
job to print, change printer properties to select the settings you want for your job.
1 Menu 2Select 3Return4
Go5Stop 6
Display
Ready

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See the menu map for a brief overview of the printer menus available from the operator panel.
Select Press Select to:
•Open the menu shown on the second line of the display.
•Save the displayed menu item as the new user default setting.
•Clear certain messages from the display.
•Continue printing after the Change <x> message appears. See Change <x> for more
information.
Return Press Return to go back to the previous menu level or menu item.
Stop Press Stop at the Ready, Busy, or Waiting message to temporarily take the printer offline.
The message changes to Not Ready. No data is lost.
Press Go to return the printer to the Ready, Busy, or Waiting state.
1, 2, 3, 4, 5, 6 Use the numbers located next to the names of the buttons to enter your personal identification
number (PIN) after you send a confidential job.
Button Function

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3Sending a job to print
To print a job from a typical Windows application:
1Open the file you want to print.
2From the File menu, select Print.
3Verify that the correct printer is selected in the dialog box.
4Modify the printer settings as appropriate (such as the pages you want to print or the number
of copies).
Note: Click Properties or Setup to adjust printer settings not available from the first
screen, and click OK.
5Click OK or Print to send the job to the selected printer.

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4Canceling a print job
Cancel a job from the printer operator panel
If the job you want to cancel is printing, and Busy appears on the display:
1Press Menu until you see Job Menu, and then press Select.
2Press Menu until you see Cancel Job, and then press Select.
Cancel a job from the Windows taskbar
When you send a job to print, a small printer icon appears in the right corner of the taskbar.
1Double-click the printer icon. A list of print jobs appears.
2Select the job you want to cancel.
3Press Delete on your keyboard.
Cancel a job from a Windows desktop
1Minimize all programs to reveal the contents of the desktop.
2Double-click My Computer.
3Double-click Printers. A list of available printers appears.
4Double-click the printer you selected when you sent the job. A list of print jobs appears.
5Select the job you want to cancel.
6Press Delete on your keyboard.

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Cancel a job from a Macintosh computer
When you send a job to print, the icon for your selected printer appears on the desktop.
1Double-click the printer icon on your desktop. A list of print jobs appears.
2Press Control and click the print job you want to cancel.
3Select Stop Queue from the pop-up menu that appears.

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5Conserving supplies
Several settings in your application software or on the display let you conserve toner and paper:
Supply Setting What the setting does For more information,
see...
Toner TonerDarknessin
the Color Menu Lets you adjust the amount of toner released on a sheet of paper. The values
range from 1 (lightest setting) to 5
(darkest setting).
Toner Darkness
Paper and
specialty media Multipage Print in the Finishing
Menu
Prints two or more page images on one
side of a sheet.
Values for Multipage Print are 2 Up, 3
Up, 4 Up, 6 Up, 9 Up, 12 Up, and 16 Up.
Combined with the duplex setting,
Multipage Print lets you print up to 32
pages on one sheet of paper (16 images
on the front and 16 on the back).
Multipage Print
Duplex in the
Finishing Menu Available when you attach an optional duplex unit. Duplex
Paper and
specialty media Use your software application or
printer driver to
senda VerifyPrint
job.
Use Held Jobs in
the Job Menu to
accessyourVerify
Print job.
Lets you examine the first copy of a
multiple-copy job to be sure it is
satisfactory before you print the other
copies. If the job is unsatisfactory, you
cancel the job.
Verify Print
Canceling a print job
Holding a job in the
printer

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6Holding a job in the printer
When sending a job to the printer, you can specify in the driver that you want the printer to hold the job
in memory. When you are ready to print the job, you must go to the printer and use the operator panel
menus to identify which held job you want to print.
Note: Print and Hold functions require a minimum of 16MB available printer memory. We
recommend a minimum of 32MB available printer memory and a hard disk.
To learn more about this function, click a topic:
Printing and deleting held jobs
Once held jobs are stored in printer memory, you can use the printer operator panel to specify what
you want to do with one or more of the jobs. You can select either Confidential Job or Held Jobs
(Repeat Print, Reserve Print, and Verify Print jobs) from the Job Menu. If you select Confidential Job,
you must enter the personal identification number (PIN) you specified in the driver when you sent the
job. See Confidential jobs for more information.
From either the Confidential Job or the Held Jobs menu items, you have five choices:
•Print All Jobs
•Print A Job
•Delete All Jobs
•Delete A Job
•Print Copies
•Printing and deleting held
jobs
•Recognizing when format
errors occur
•Verifying print jobs
•Reserving print jobs
•Accessing held jobs from
the operator panel
•Repeating print jobs at a
later time
•Printing confidential jobs

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Accessing held jobs from the operator panel
1To access held jobs from the operator panel:
–If the printer is Busy, press Menu and the Job Menu appears.
–If the printer is Ready, continue to step 2.
2Press Menu until you see Held Jobs or Confidential Job on the operator panel display,
depending on the type of job you want to access.
3Press Select.
User Name appears on the first line of the operator panel. The second line displays the names
of users currently associated with Print and Hold jobs.
4Press Menu until you see your user name.
Note: If you are looking for a Confidential Job, you are prompted to enter your PIN. See
Confidential jobs for more information.
5Press Select.
6Press Menu until the action you want to take is on the second line of the operator panel (Print
A Job, Delete A Job, and so on).
7Press Select.
–If you are looking for a particular job, press Menu to scroll through the list of available jobs,
and press Select when the correct job is displayed. An asterisk (*) appears next to the job
name indicating you have chosen to print or delete that job.
–If you are prompted to enter the number of copies you want to print, use the Menu button
to increase or decrease the number on the display, and then press Select.
8Press Go to print or delete specific jobs you have marked.
The printer briefly shows messages indicating what Print and Hold functions it is performing.
Recognizing when format errors occur
If the symbol appears on the display, it indicates that the printer had trouble formatting one or more
of the held jobs. These formatting problems are most commonly the result of insufficient printer
memory or invalid data that might cause the printer to flush the job.
When a symbol appears next to a held job, you can:
•Print the job. Be aware, however, that only part of the job may print.
•Delete the job. You may want to free up additional printer memory by scrolling through the list
of held jobs and deleting others you have sent to the printer.
If formatting errors are a recurring problem with held jobs, your printer may require more memory.

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Repeat Print
If you send a Repeat Print job, the printer prints all requested copies of the job and stores the job in
memory so you can print additional copies later. You can print additional copies as long as the job
remains stored in memory.
Note: Repeat Print jobs are automatically deleted from printer memory when the printer
requires extra memory to process additional held jobs.
Reserve Print
If you send a Reserve Print job, the printer does not print the job immediately, but stores the job in
memory so you can print the job later. The job is held in memory until you delete it from the Held Jobs
menu. Reserve Print jobs may be deleted if the printer requires extra memory to process additional
held jobs.
See Printing and deleting held jobs for information.
Verify Print
If you send a Verify Print job, the printer prints one copy and holds the remaining copies you requested
from the driver in printer memory. Use Verify Print to examine the first copy to see if it is satisfactory
before printing the remaining copies.
See Printing and deleting held jobs if you need help printing the additional copies stored in memory.
Note: Once all copies are printed, the Verify Print job is deleted from printer memory.
Confidential jobs
When you send a job to the printer, you can enter a personal identification number (PIN) from the
driver. The PIN must be four digits using the numbers 1–6. The job is then held in printer memory until
you enter the same four-digit PIN from the printer operator panel and choose to print or delete the job.
This ensures that the job does not print until you are there to retrieve it, and no one else using the
printer can print the job.

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When you select Confidential Job from the Job Menu and then select your user name, the following
prompt is displayed:
Enter PIN:
=____
Use the buttons on the operator panel to enter the four-digit PIN associated with your confidential job.
The numbers next to the button names identify which button to press for each digit (1–6). As you enter
the PIN, asterisks are displayed on the operator panel to ensure confidentiality.
If you enter an invalid PIN, the message No Jobs Found. Retry? appears. Press Go to reenter the
PIN, or press Stop to exit the Confidential Job menu.
When you enter a valid PIN, you have access to all print jobs matching the user name and PIN you
entered. The print jobs matching the PIN you entered appear on the display when you enter the Print A
Job, Delete A Job, and Print Copies menu items. You can then choose to print or delete jobs matching
the PIN you entered. (See Printing and deleting held jobs for more information.) After printing the
job, the printer deletes the confidential job from memory.
Enter PIN
=****

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7Paper and specialty media
specifications
The following table lists supported paper and specialty media sizes and types for the standard and
optional trays, as well as for the multipurpose feeder. We recommend that you try a limited sample of
any paper or specialty media you are considering using with the printer before purchasing large
quantities.
For more details about the types of paper and specialty media your printer supports, refer to the Card
Stock & Label Guide available on Lexmark’s Web site at www.lexmark.com.
Source Paper sizes supported Paper types supported Capacity
500-sheet trays Letter, A4, A5, Legal,
Executive, JIS B5, Folio1,
Statement1, Universal2,3
Paper, transparencies,
labels, card stock 500 sheets of 20 lb paper
400 transparencies
250 sheets of labels or
card stock4
2000-sheet tray Letter, A4, A5, Legal,
Executive, JIS B5 Paper 2000 sheets of 20 lb paper
Multipurpose
feeder Letter, A4, A5, Legal, Executive, JIS B5, Folio1,
Statement1, Universal2,3
Paper, transparencies,
labels, card stock 100 sheets of 20 lb paper
85 transparencies
85 sheets of labels or
card stock
7¾, 9, 10, DL, C5, B5, other2Envelopes 10 envelopes
1Supported as selected paper with tray size sensing turned off in the appropriate trays.
2When selected, the page is formatted for 215.9 x 355.6 mm (8.5 x 14 in.) unless otherwise specified.
3Load narrow media with the length in the feed direction (portrait).
4If you print large quantities of labels or other glossy print media, replace the fuser housing with a web oiler field
upgrade kit (P/N 12G6307 for a 115 V printer, P/N 12G6308 for a 220 V printer).

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8Loading the trays
Loading the 500-sheet trays
Follow these instructions to load any of the 500-sheet trays.
1Remove the tray.
2Squeeze the front guide lever and slide the guide to the front of the tray.