Lexmark C 746 Service Manual

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6.Use   or   to select the margin setting you need to change, and press  . For C748x, use   or   to 
select the margin setting you need to change, and touch  .
•Each increment shifts the duplex left margin by 4 pixels at 600 dpi (0.00666 inches or 0.1693 mm). 
•The Left Margin range is -50 to +50, and the default value is 0.
•An increase moves the margin to the right, and a decrease moves the margin to the left.
Sensor Test
There are two groups of sensors...

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Printhead Tests
Mirror Motor Test
1.
Select PRINTHEAD TESTS from the Diagnostics Menu.
2.Select Mirror Motor Test.
The panel displays Motor Running. 
After the test completes, the panel displays either Pass or Fail.
To stop the test, Touch Back or press  .
Servo Laser Test
1.
Select PRINTHEAD TESTS from the Diagnostics Menu. 
2.Select Servo Laser Test.
The panel displays Motor Running. After the test completes, the panel displays either Pass or Fail.
To stop...

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Quick Disk Test
This test performs a non-destructive read/write on one block per track on the disk. The test reads one block on 
each track, saves the data, and proceeds to write and read four test patterns to the bytes in the block. If the 
block is good, the saved data is written back to the disk.
To run the Quick Disk Test:
1.Select DEVICE TESTS from the Diagnostics Menu.
2.Select Quick Disk Test.
•The power indicator blinks while the test is in...

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Disk Test/Clean
Warning:This test destroys all data on the disk and should not be attempted on a good disk. This test may run 
approximately 1½ hours depending on the disk size.
To run the Disk Test/Clean Test:
1.Select DEVICE TESTS from the Diagnostics Menu.
2.Select Disk Test/Clean.
Files will be lost/Go or Stop? is displayed to warn the user.
3.To exit the test immediately and return to DEVICE TESTS, touch Back or press  . To continue with the 
test,...

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Page Counts
You can view, but not change any of the three counts displayed under PAGE COUNTS.
To view the Prt Color Pg Count, the Prt Mono Pg Count, or the Perm Page Count:
1.Select PRINTER SETUP from the Diagnostics Menu.
2.Select the page count you wish to view:
•Prt Color Pg Count
•Prt Mono Pg Count
•Perm Page Count
Touch Back or press   to return to PRINTER SETUP.
Serial Number
The serial number can only be viewed and cannot be changed.
To view the...

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5.Repeat the steps for entering the Configuration ID 2, and press .
Note:  The printer will NOT perform an automatic POR after the Configuration IDs are accepted.
Reset color calibration (Reset Color Cal)
The Reset Color Cal enables the alignment of the color planes using pre-programmed values. Automatic Color 
Adjust Calibration may be more effective.
1.Select PRINTER SETUP from the Diagnostics Menu.
2.Select Reset Color Cal.
Resetting displays on the...

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DC Charge Adjust, Dev Bias Adj, Transfer Adjust
Each of these three settings enables you to adjust the high voltage levels controlling the electrophotographic 
process. You will use these settings to compensate for unusual operating circumstances such as high humidity. 
The printer uses the value of these settings together with other settings to calculate printing speed and media 
selection.
Reports
Menu Settings Page
The Menu Settings Page is a list of...

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Print Log
Additional diagnostic information is available when you print the event log from DIAGNOSTICS rather than 
CONFIG MENU. 
The Event Log printed from DIAGNOSTICS includes:
•Detailed printer information, including code versions
•Time and date stamps
•Page counts for most errors
•Additional debug information in some cases
The printed event log can be faxed to Lexmark or your next level of support for verification or diagnosis.
To print the event log:...

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Configuration menu (CONFIG MENU)
Available tests
The tests display on the operator panel in the order shown. 
Reset Fuser Cnt See “Reset Fuser Cnt” on page 3-28. 
Color Lock Out  See “Color Lock Out” on page 3-28.
Print Quality Pages See “Print Quality Pages” on page 3-28. 
Reports
Menu Settings Page See “Menu Settings Page” on page 3-29.
Event Log See “Event Log” on page 3-29.
Color Trapping See “Color Trapping” on page 3-29. 
Tray Insert Msg See “Tray...

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Reset Fuser Cnt
Resets the fuser count value to zero. The Event Log records each time that a user executes the Reset Fuser 
Count operation. See “Event Log” on page 3-29 for more information. This setting only appears if the 
Maintenance Warning and Intervention function is enabled in the printer Configuration ID.
To reset the fuser count:
1.Select Reset Fuser Cnt from the Configuration Menu.
To cancel a reset, touch Back or press  . 
2.Select Reset Fuser...