Lexmark E 450 Dn Service Manual

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PRINT TESTS 
Input source tests
The purpose of the diagnostic Print Tests is to verify that the printer can print on media from each of the installed 
input options. The contents of the Print Test Page varies depending on the media installed in the selected input 
source.
Check each Test Page from each source to assist in print quality and paper feed problems.
To run the Print Test Page:
1.Select PRINT TESTS from the Diagnostics menu.
2.Select the media source.
Tray 1
Tray...

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HARDWARE TESTS
Select the following Hardware Tests from this menu:
•Panel Test
•Button Test
•DRAM Test
•ROM Memory Test
•Parallel Wrap (if available)
•Serial Wrap (if available)
Panel Test
This test automatically toggles each pixel of the operator panel through every contrast level beginning with the 
darkest and on to the brightest. This test continues until you press Stop ()
.
Button Test
The Button Test verifies the operation of the buttons on the operator panel. When you...

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Parallel Wrap tests
This test is used with a wrap plug to check operation of the parallel port hardware. Each parallel signal is tested. 
Use Parallel Wrap for the standard parallel port, Parallel 1 Wrap if a parallel port is available by PCI slot 1, or 
Parallel 2 Wrap if a parallel port is available by PCI slot 2.
To run the Parallel Wrap tests:
1.Disconnect the parallel interface cable, and install the wrap plug (P/N 1319128).
2.Select Parallel Wrap, Parallel 1 Wrap, or...

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DUPLEX TESTS 
Quick Test (duplex)
This test prints a duplex version of the Quick Test that can be used to verify that the correct placement of the top 
margin on the back side of a duplex page. You can run one duplexed page (Single), or continue printing 
duplexed pages (Continuous) until Stop ( ) is pressed. For information about changing the margin, see 
“Top/Left Margin (duplex)” on page 3-16.
Note:  Before you set the duplex top margin, be sure to set the registration....

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Sensor Test (duplex)
This test is used to determine whether or not the duplex sensors and switches are working correctly. The test 
allows you to actuate the duplex input sensor located in the back part of the duplex unit and the duplex exit 
sensor located in the return paper path.
1.Select Sensor Test from DUPLEX TESTS.
The message Sensor Test Testing displays.
2.Manually actuate each of the duplex sensors. When the sensor/switch is closed, CL (closed) displays, and 
when...

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INPUT TRAY TESTS
Feed Tests (input tray)
This test lets the servicer observe the paper path as media is feeding through the printer. A blank sheet of paper 
feeds through the printer as the laser turns off during this test. The paper is placed in the output bin.
To run the Input Tray Feed Tests:
1.Select Feed Tests from INPUT TRAY TESTS.
2.Select the input source from the sources displayed on the Feed Tests menu. All installed sources are listed.
3.Select either Single or...

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OUTPUT BIN TESTS
Feed Tests (output bins)
Use these tests to verify that media can be fed to a specific output bin. Media is fed from the default input source 
to the selected output bin. No information is printed on the media fed to the output bin because the printhead is 
not engaged during this test. These tests can use any media size or envelope supported by the printer.
To run the Feed Tests for the output bins:
1.Select Feed Tests from the OUTPUT BIN TESTS.
2.Select...

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BASE SENSOR TEST
This test is used to determine if the sensors located inside the printer are working correctly.
To run the Base Sensor Test:
1.Select BASE SENSOR TEST from the DIAGNOSTICS menu.
The following sensors are listed:
•Exit–Exit sensor
•Front Door–Front door sensor
•Input–Input sensor
2.Manually actuate the sensors to verify that each sensor switches from Open to Closed.
3.Press Back() or Stop( ) to exit the test. 

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PRINTER SETUP
Defaults
US/Non-US defaults changes whether the printer uses the US factory defaults or the non-US factory defaults. 
The settings affected include paper size, envelope size, PCL symbol set, code pages, and units of measure.
Warning:  Changing this setting resets the printer to factory defaults, and data may be lost. It cannot be undone.
Page Count
The page count can only be viewed and cannot be changed.
To view the page count:
1.Select Page Count from PRINTER...

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Configuration ID
The two configuration IDs are used to communicate information about certain areas of the printer that cannot be 
determined using hardware sensors. The configuration IDs are originally set at the factory when the printer is 
manufactured, however the servicer may need to reset Configuration ID 1 or Configuration ID 2 whenever you 
replace the system board. The IDs consist of eight hexadecimal characters, including 0 through 9 and A 
through F.
Note:  When...