Lexmark X543 Service Manual

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7.Select the Skew value in the same way, enter the value, press Select ( ), and print the Quick Test to see 
if the observed values and the current values are the same. 
8.On the second page of the latest Quick Test you printed, proceed to Step 2; adjust the left, right ,and bow 
settings. Continue printing the Quick Test after each adjustment to verify your settings.
9.Continue on to the other two colors in the same manner.
Factory Scanner
Note:  This setting is not used by field service.
Factory Manual
Note:  This setting is not used by field service. 
						

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Miscellaneous Tests
Motor Detect
This test initiates an automatic motor detection process that should be performed whenever the controller board 
is replaced.
To run Motor Detect:
1.Select MISC TESTS in the Diag Menu, and press Select ().
Remove Cartridge. press Select appears.
2.Select Motor Detect. 
Note:  Do not press Select yet.
3.Remove all toner cartridges and the imaging unit.
4.Close the front cover. 
If you press Select before closing the front cover, a message appears: Close Cover. press Select. 
5.press Select ().
Motor Detection In Progress… appears.
The motor detection process takes about 10 seconds, and stops automatically.
Detect Complete. Rebooting… appears, and the printer performs a POR (Power On Reset). 
						

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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 vary 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 Diag Menu, and press Select ().
2.Select the media source (Tray 1, Tray 2, Manual Feeder, or MP Feeder), and press Select (),
3.Select Single or Continuous, and press Select ().
If Single is selected, a single page is printed.
If Continuous is selected, printing continues until Stop ( ) is pressed to cancel the test.
If a source is selected that contains envelopes, an envelope test pattern is printed. If Continuous is 
selected, the test pattern is printed only on the first envelope.
Note:  The Print Test Page always prints on one side of the paper, regardless of the duplex setting.
4.press Back ( ) to return to PRINT TESTS. 
Print quality test pages (Prt Quality Pgs)
The print quality test consists of five pages. Pages one and two contain a mixture of graphics and text. The 
remainder of the pages contain only graphics. The test prints on the media in tray 1.
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This test may be printed from either Configuration Menu or the Diagnostics Menu.
To run the print quality pages from the Diagnostics Menu:
1.Select PRINT TESTS, and press Select (). 
2.Select Print Quality Pgs, and press Select ().
The message Printing Quality Test Pages is displayed. 
Note:  Once the test is started, it cannot be cancelled. 
When the test pages print, the printer returns to the original screen. 
						

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Hardware Tests
Panel Test
This test verifies the operator panel LCD function.
To run the Panel Test:
1.Select Hardware Tests from Diag Menu, and press Select ().
2.Select Panel Test, and press Select ().
The Panel Test continually executes.
press Stop ( ) to cancel the test.
Button Test
This test verifies the operator panel button function.
To run the Button Test:
1.Select Hardware Tests from Diag Menu, and press Select ().
2.Select Button Test, and press Select ().
press count: 0 appears.
press each operator panel button, and watch to see if the number of press counts increases by one for 
each press.
Note:  If you press Stop ( ), you end the test.
press Stop ( ) to cancel the test.
DRAM Test
This test checks the validity of DRAM, both standard and optional. The test writes patterns of data to DRAM to 
verify that each bit in memory can be set and read correctly.
To run the DRAM Test:
1.Select Hardware Tests in Diag Menu, and press Select ().
2.Select DRAM Test, and press Select ( ). 
a.The printer displays:
b.The printer initiates a POR of the printer, and the following screen is displayed:
c.After the POR, the printer begins testing the memory.
P:###### represents the number of times the memory test has passed and finished successfully. 
Initially, 000000 displays with the maximum pass count being 99,999.
F:##### represents the number of times the memory test has failed and finished with errors. Initially, 
0000 displays with the maximum fail count being 99,999.
3.Once all the memory is tested, the test stops.DRAM Test Testing…
Resetting the 
Printer
DRAM Test 128M
P:###### F:##### 
						

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To stop the test early, turn off the printer.
CACHE Test
The CACHE Test is used to verify the processor cache is functioning properly.
1.Select Hardware Test in Diag Menu, and press Select ().
2.Select CACHE Test, and press Select ().
a.The printer displays:
b.The printer initiates a POR of the printer, and the following screen is displayed:
c.Upon completion of the POR, the following screen is displayed:
P:###### represents the number of times the CACHE Test has passed, finished successfully.
Initially, 000000 is displayed. The maximum pass count is 999,999.
F:###### represents the number of times the CACHE Test has failed, finished with errors.
Initially, 000000 is displayed. The maximum fall count is 999,999.
3.To stop the test, turn the printer off.CACHE Test Testing…
Resetting the 
Printer
CACHE Test x100
P:###### F:###### 
						

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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 the correct placement of the top 
margin on the back side of a duplex page.
Note:  Before you set the duplex top margin, be sure to set the registration. See “Registration” on page 3-4.
The paper you choose to print the page on should be either Letter or A4.
To run the Quick Test (duplex):
1.Select DUPLEX TESTS from Diag Menu, and press Select ().
2.Select Quick Test, and press Select ().
3.Select Single or Continuous, and press Select ( ). 
The single Duplex Quick test prints the Quick Test on front and back.
The printer attempts to print the Quick Test Page from the default paper source. 
Check the Quick Test Page for the correct offset between the placement of the first scan line on the 
front and back side of the duplexed sheet.
For information about changing the margin, see “Top Margin (duplex)” on page 3-16.
The single test stops automatically when a single duplex sheet is printed, and the continuous test continues until 
you press Stop ().
Left Margin (duplex)
This setting shifts the image on the backside of the duplex sheet to the left or right to correctly position it on the 
page. Therefore, be sure to set the top margin in REGISTRATION before setting the duplex top margin. See 
“Registration” on page 3-4.
To set the Left Margin (duplex):
1.Select DUPLEX TESTS from Diag Menu, and press Select ().
2.Select Quick Test, and press Select ().
3.Select Single, and press Select ().
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4.Hold the page to the light to see whether the left margin of the back aligns with the left margin of the front.
5.Select Left Margin from DUPLEX TESTS.
6.Use   or   to select the margin setting you need to change.
Each increment shifts the duplex left margin by 4 pixels at 500 dpi (0.0067 inches or 0.1693 mm). 
The Left Margin (duplex) range is -25 to + 25, and the default value is 0.
An increase in the value moves the backside left margin to the right, and widens the left margin. A 
decrease moves the backside left margin to the left, and narrows the left margin.
7.press Select ( ) to save the new value.
8.Print the Quick Test (duplex) again (steps 1–4) to verify the adjustment. Repeat if necessary.
Top Margin (duplex)
This setting controls the offset between the first scan line on the front of the duplex page and the first scan line 
on the back of the page. Therefore, be sure to set the top margin in REGISTRATION before setting the duplex 
top margin. See “Registration” on page 3-4.
To set the Top Margin (duplex):
1.Select DUPLEX TESTS from Diag Menu, and press Select ().
2.Select Quick Test, and press Select ().
3.Select Single, and press Select ().
4.Hold the page to the light to see whether the top margin of the back aligns with the top margin of the front.
5.Select Top Margin from DUPLEX TESTS.
6.Use  or   to select the margin setting you need to change.
Each increment shifts the duplex top margin by 1/100 of an inch. 
The Top Margin (duplex) range is -50 to +50, and the default value is 0.
An increase in the value moves the backside top margin down and widens the top margin. A 
decrease moves the top margin upward and narrows the top margin.
7.press Select ( ) to save the new value.
8.Print the Quick Test (duplex) again (steps 1–4) to verify the adjustment. Repeat if necessary.
Sensor Test (duplex)
This test determines if the duplex sensors and switches are working correctly.
To run the Sensor Test: 
1.Select DUPLEX TESTS from Diag Menu, and press Select ().
2.Select Sensor Test, and press Select ().
The printer displays Sensor Test Testing…. The exit sensor (the optical sensor located in the return paper 
path) and the input sensor (the optical sensor located in the back part of the duplex unit) are tested and 
reported as Open or Closed. Toggle the sensors to change the message, and verify the sensors are working 
correctly.
press Back ( ) to exit the sensor test. 
						

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Input Tray tests
Feed Tests
This test allows you to observe the paper path of media as it passes through the printer. Any installed input tray 
can be tested. The pages fed through the printer are blank.
To run the Feed Test:
1.Select INPUT TRAY TESTS from Diag Menu, and press Select ().
2.Select Feed Tests, and press Select ().
3.Select the tray to be tested. Choices are installed trays, including Tray 1, Tray 2, and MP Feeder.
4.Open the upper rear door to view the paper path.
Note:  Do not open the upper front door. The test will not run if the front door is open.
5.Select Single or Continuous, and press Select ().
Single—a single sheet of blank paper is fed, and the test stops.
Continuous—sheets are fed continuously until Stop ( ) is pressed.
Sensor Test
This test is used to verify that the sensors are working correctly for an individual input tray.
1.Select INPUT TRAY TESTS from Diag Menu, and press Select ().
2.Select Sensor Tests, and press Select ().
3.Select the tray where you want to test the sensors. Depending on the tray selected, you may have Empty 
Sensor, Low Sensor, or Pass thru Sensor.
Sensors will be displayed with either Open or Closed. Toggle the sensor you want to test, and note the 
change of state of that sensor.
To Exit the test, press Back () or Stop (). Input Tray Empty Sensor Low Sensor Pass thru Sensor
Tr a y  1
✘✘ ✘
Tray 2 (650-sheet duo tray)✔✔ ✔
MP Feeder✘✘ ✘ 
						

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Base Sensor Test
These tests allow you to verify the correct functioning of the front door, input, and output sensors.
1.Select Base Sensor Test from Diag Menu, and press Select ().
2.Select the sensor you want to test, and press Select ().
The following test are available:
To exit the test, press Back () or Stop.
Device Tests
Flash Test
This menu item appears only if the flash card is installed. Data is written to the flash card and read back to check 
the accuracy. 
Warning:This test deletes all data stored on the flash device. After the test is over, reformat the flash using 
Format Flash in the customer Utilities Menu.
To run the Flash Test:
1.Select DEVICE TESTS from Diag Menu, and press Select ().
2.Select Flash Test, and press Select ().
Contents will be lost. Continue? appears.
3.To continue, select Ye s, and press Select ( ). To end the test, select No, and press Select ().
If you continue, Flash Test Testing… appears.
If the test is successful, Flash Test Passed appears. Use Format Flash in the Utilities Menu to reformat 
the flash card.
If the test is unsuccessful, Flash Test Failed appears. Replace the flash card.
4.press Back ( ) to remove the message and return to the Device Tests menu. Sensor Value How to test
Input (Front Door) Value opened/
Not closed Open and close front door. The sensor should change 
state.
Standard Bin Bin full Toggle the bin full media flag attached to the redrive 
unit.
S1 Media clear Remove the media tray. Activate the input sensor flag. 
The sensor should change state.
S2 Media clear Remove and re-insert the media tray. The sensor 
should change state.
Fuser exit sensor Media clear Open the front door. Activate the fuser exit flag. The 
sensor should change state.
C-TMC Sensor Value opened/
Not closedRemove the cyan toner cartridge. Shine a flashlight on 
the toner level sensor. The sensor should change 
state.
M-TMC Sensor Value opened/
Not closedRemove the magenta toner cartridge. Shine a 
flashlight on the toner level sensor. The sensor should 
change state.
Y-TMC Sensor Value opened/
Not closedRemove the yellow toner cartridge. Shine a flashlight 
on the toner level sensor. The sensor should change 
state.
K-TMC Sensor Value opened/
Not closedRemove the black toner cartridge. Shine a flashlight 
on the toner level sensor. The sensor should change 
state.