Lexmark X543 Service Manual

Diagnostic information2-67
Lexmark confidential until announce7525xxx
ADF cover open service check
ADF streak service check
Step Questions / actions Yes No
1 Is the ADF cover properly closed Go to step 3. Go to step 2.
2 Close the ADF cover.
Does the problem go away?Issue resolved Go to step 3.
3 Perform the ADF cover open sensor test. Go 
to “Scanner Tests” on page 3-25. Does 
the sensor work properly.Go to step 4 Go to step 8.
4 On the bottom of the ADF cover, inspect the 
ADF cover closed sensor...

2-68Service Manual 7525xxxLexmark confidential until announce
ADF paper jam service check
Note:  This service check should be used if the paper feeds and jams in the ADF. If the paper is not feeding into 
the ADF see “ADF feed errors service check” on page 2-69. 
Step Questions / actions Yes No
1 If the ADF is multi-feeding, check for dirt on 
the ADF separator pad and ADF separator 
rollers. Are they dirty?Clean them with a lint free 
cloth and isopropyl alcohol.Replace the separator pad 
and ADF pick...

Diagnostic information2-69
Lexmark confidential until announce7525xxx
ADF feed errors service check
ADF Duplex service check
Step Questions / actions Yes No
1 If the ADF is multi-feeding, check for 
dirt on the ADF separator pad and 
ADF separator rollers. Are they dirty?Clean them with a lint free 
cloth and isopropyl alcohol.Replace the separator pad and 
ADF pick roll.
2 If the paper is skewing when it is fed 
into the ADF, check the paper guide 
width. Is it set correctly?Go to step 3. Set the paper...

2-70Service Manual 7525xxxLexmark confidential until announce
Modem / fax card service check
3 Check all the connections on the ADF 
relay card. Are they properly 
connected?Go to step 4 Properly connect all the 
connections.
4 Check the ADF cable to ensure it is 
properly connected to CN 15 on the 
ADF relay card, and main controller 
board at JADF1. Is the ADF cable 
properly connected?Go to step 5. Properly connect the ADF cable 
to its connections.
5 Check the ADF cable for continuity. 
Make sure...

Diagnostic information2-71
Lexmark confidential until announce7525xxx
Fax transmission service check
Note:  Before performing this service check, verify that the correct country code for the MFP is selected. This 
setting must match the country in which the MFP is used to transmit and receive faxes. If the setting is wrong, 
the modem settings can be changed in the Fax/SE menu. See step 14. These settings should only be performed 
with guidance from your second-level support.
Step Questions / actions Yes...

2-72Service Manual 7525xxxLexmark confidential until announce
15 Adjust the “Transmit Level” setting in the SE 
menu. press **411 to enter the SE menu, 
enter Modem settings, and select “Transmit 
Level”.
Test by adjusting the transmitted signal 
strength by decreasing/increasing the 
‘Transmit Level’ setting in steps of 1db. For 
example, if default value is -11 db, changing 
it to-12db will decrease the signal strength 
by 1db, and changing it to -10db will 
increase the signal strength by 1db....

Diagnostic information2-73
Lexmark confidential until announce7525xxx
Fax reception service check
Step Questions / actions Yes No
1 Is the phone line properly connected to the 
modem card and the wall jack?Go to step 2. Go to step 3.
2 Properly connect the phone line to the 
modem card and wall jack.
Did this fix the problem?Problem resolved. Go to step 3.
3 Check for a dial tone. 
Is there a dial tone?Go to step 4. Go to step 6.
4 Use a telephone to test the phone line’s 
ability to send and receive...

2-74Service Manual 7525xxxLexmark confidential until announce
17 Go to the Administrator menu. Enter the Fax 
settings - Analog Fax Settings submenu.
Verify the remote device number is not in the 
Banned Fax List user setting.
Is the remote device number in the banned 
fax list?Go to step18 Go to step 19.
18 Remove the remote number from the 
banned fax list.
Did this fix the problem?Problem resolved. Go to step 19.
19 Adjust the “Receive Threshold” setting in the 
SE menu. press **411 to enter the SE...

Diagnostic information2-75
Lexmark confidential until announce7525xxx
Escalating a fax issue to second-level support
Before contacting the second-level support, go to the SE menu on the MFP.and generate a Fax error file. This 
file contains machine settings information and debug information that will help second-level support determine 
the cause of a failure.
To generate the fax error file, perform the following steps:
1.In a Web browser, type http://MFP ip address/se. 
2.The MFP’s SE menu page will...

2-76Service Manual 7525xxxLexmark confidential until announce
User operator panel, menus and messages
Understanding the operator panel
The printer operator panel has a four-line, back lit, grayscale display that can show both graphics and text. The 
Mode selection, job setup, Back, and Menu buttons are located to the left of the display, the navigation buttons 
are located below the display, and the start buttons, stop button, and numeric pad are located to the right of the 
display. In addition, there...