Lexmark X543 Service Manual

Diagnostic aids3-29
Lexmark confidential until announce7525xxx
Sensor2 test
This test verifies the functionality of scan sensor 2. To test this sensor. perform the following steps:
1.In the sensor test menu, press  or   to scroll to the Sensor 2 test.
2.press Select (). Starting Test displays. Sensor 2: Closed displays.
3.Lift the ADF top cover, and close the ADF cover sensor (A) by pressing down on the ADF sensor actuator 
with a small flat blade screwdriver.
4.Move the Sensor 2 actuator by inserting a...

3-30Service Manual 7525xxxLexmark confidential until announce
EXIT Diags
press Select ( ) to exit Diag Menu. The printer performs a power-on reset and returns to normal mode. 

Diagnostic aids3-31
Lexmark confidential until announce7525xxx
Configuration Menu
Available tests
The tests display on the operator panel in the order shown for all models.
USB Scan to Local
USB Scan to Local enumerates a USB simple device or USB composite device. In the off position the simple 
USB device is enumerated: in the on position, the composite USB device is enumerated.
Prt Quality Pages
The Prt Quality Pages can be printed from both the Configuration Menu and the Diagnostics Menu. The...

3-32Service Manual 7525xxxLexmark confidential until announce
Uses an algorithm to compensate for mechanical incorrect registration in the printer. When small black text or 
fine black lines are being printed, the printer checks to see if they are being printed on top of a colored 
background. If so, rather than remove the color from beneath the black content, the printer leaves the color 
around the edge of the text or line. The hole in the colored region is reduced in size, which prevents the...

Diagnostic aids3-33
Lexmark confidential until announce7525xxx
Demo Mode
Lets marketing personnel or merchandisers demonstrate the printer to potential customers by printing the demo 
page.
Selections include Deactivate (default) and Activate. Select Deactivate to turn Demo Mode off; or select 
Activate to turn Demo Mode on.
Factory defaults
Sets the majority of printer values back to their factory default settings. 
Warning:This selection cannot be reversed, so this operation should be used only as a...

3-34Service Manual 7525xxxLexmark confidential until announce
Min Copy Memory
This setting allocates the amount of DRAM memory to be used for storing copy jobs in the queue. 25, 35,50,80 
and 100 MB are the available settings. To adjust the minimum copy memory, perform the following steps:
1.In the configuration menu, scroll to the MinCopy Memory item, and press  .
2.Use the   or   to increase or decrease the setting’s value.
3.When the desired value is displayed, press  .
Format Fax Storage
This setting...

Diagnostic aids3-35
Lexmark confidential until announce7525xxx
FB Edge Erase
This menu item sets the size, in millimetres, of the no print are around a flatbed scan job. Copy jobs will use the 
setting or two millimetres, whichever is larger.
To adjust the flatbed edge erase setting, perform the following steps:
1.In the Configuration menu, select the FB Edge Erase menu item.
2.Use the   or   to increase or decrease the settings value.
3.When the desired value is displayed, press  .
Scanner Manual...

3-36Service Manual 7525xxxLexmark confidential until announce
16.Use the   or   to increase or decrease the settings value.
Note:  Each button press moves the margin values one pixel in the respective direction.
17.Press  to accept the value.
18.Scroll to Top Edge, and press  .
19.Use the   or   to increase or decrease the settings value.
Note:  Pressing moves the margin up, and pressing  moves the margin down.
20.Press  to accept the value.
To manually register the flatbed, perform the following steps:...

Diagnostic aids3-37
Lexmark confidential until announce7525xxx
Font Sharpening
This setting is used to set a text point size value below which the high frequency screens will be used when 
printing data. This setting affects only PCL, PostScript and PDF emulators.
Settings are in the range of 0–150 (24 is the default). For example, if the value is set to 24, then all fonts sized 24 
points or less use the high frequency screens. 
To adjust the Font Sharpening setting, perform the following steps:
1.In...

3-38Service Manual 7525xxxLexmark confidential until announce
SE Menu
Note:  This is not the Fax SE menu. To enter the Fax SE menu, press **411 from the Ready screen.
Note:  This menu should be used as directed by second-level support.
Print SE Menus
General
Copyright - Displays copyright information.
Optra Forms mode - On or off
Code Revision Info
Network Code Level - Displays network code level
Network Compile Info - Displays compile information
Printer Code Level - Displays printer code information...