Lexmark C736 Service Manual

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Registration
Note:  If you need to perform alignment or registration, see “Printhead alignment” on page 4-8. 
The following information is meant to explain the uses for the menu items.
Print registration makes sure the black printing is properly aligned on the page. This is one of the steps in 
aligning a new printhead. It is also the first step in aligning the duplex registration. See “Quick Test (duplex)” 
on page 3-14. 
The settings available are Top...

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Print registration
To set print registration:
1.Select REGISTRATION from the DIAGNOSTICS menu.
2.Select Quick Test, and press Select ().
The message Quick Test Printing… appears on the display.
Note:  Retain this page to determine the changes you need to make to the margin settings.
3.Use   or   to select the margin setting you need to change, and press Select ().
4.Use   to decrease or   to increase the offset values, and press Select ( ) to confirm the...

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Quick Test
The Quick Test contains the following information:
•Print registration settings
•Alignment diamonds at the left, right, top and bottom
•Horizontal lines to check for skew
•General printer information, including current page count, installed memory, serial number, and code level.
To print the Quick Test page:
Note:  Print the Quick Test Page on letter or A4 paper.
1.Select REGISTRATION from DIAGNOSTICS, and press Select ().
2.Select Quick Test,...

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Alignment
Note:  If you need to perform alignment or registration, see “Printhead alignment” on page 4-8. 
The following information is meant to explain the uses for the menu items.
Alignment is part of the process of adjusting the printhead and the color planes to the black plane and to each 
other. Before you start, perform the black alignment (Registration). See “Printhead alignment” on page 4-8. If 
you are replacing a new printhead, see “Printhead...

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Motor tests
The motor tests are run primarily to locate noises in the printer. 
General motor tests procedures
In some instances, when you enter a particular test, you will be given the choice to run the motor in forward or 
reverse. Other times, there will only be the option to run the motor in forward direction.
In general, the test should work as follows:
1.Select MOTOR TESTS from DIAGNOSTICS, and press Select ().
2.Select the motor that you need to...

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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, and press Select ()....

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Tray 4 (if installed)
Tray 5 (if installed)
Multi-Purpose Feeder (if installed)
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...

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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 DIAGNOSTICS, and press Select ().
2.Select Panel Test, and press Select ().
The Panel Test continually executes. Each pixel is activated at the darkest level to the lightest level, and 
then the backlight illuminates and turns off. This is repeated continuously.
3.Press Stop ( ) to cancel the test at any point.
Button Test
This...

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Serial 1 Wrap
The Serial 1 Wrap Test is used to check the operation of the serial port hardware using a wrap plug. Each serial 
signal is tested.
To perform the Serial 1 Wrap Test:
1.Disconnect the serial interface cable, and install the serial wrap plug.
2.Select HARDWARE TESTS from the Diagnostics Menu, and press Select ().
3.Select Serial 1 Wrap, and press Select ().
The power indicator blinks indicating the test is in progress. The following screens...

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USB HS Test Mode
1.
Select HARDWARE TESTS from DIAGNOSTICS, and press Select ().
2.Select USB HS Test Mode, and press Select ().
3.Select the port (Port 0, Port 1, Port 2, or Port 3), and press Select ().
4.Select the test for that port from the following list:
Test J
Test K
Test SE0 NAK
Test Packet
Test Force Enable
5.Press Select ().
While the test executes, USB High Speed Testing… displays.
To exit the test, restart the printer.
Duplex Tests
Quick Test...