Diagnostic Aids; Self Test Mode - Lexmark 6300 Series Service Manual

3. Diagnostic aids

Self Test mode

To enter the Self Test mode, press the Up Arrow button and Menu button
simultaneously. The LCD displays the Self Test menu screen when the Self
Test mode is enabled. You can scroll through the test items by pressing the
Up Arrow or Down Arrow buttons. To execute a test item, press the Select
button.
Note: Press Cancel on any message screen to return to the Self Test
menu.
The following are the Self Test menu selections:
1. USB Serial Number—To view the USB serial number, press and hold
the Up Arrow button and Menu button simultaneously. This test allows
the USB serial number to be activated or deactivated. If the USB serial
number is activated, the serial number is displayed on a message
screen for five seconds. The display then returns to the Self Test menu.
2. LCD/LED Button Test—Verifies the operation of the LCD, the
illumination of the LEDs, and the functionality of the buttons on the
control panel.
3. Media Card Test—Tests memory cards in accordance with on screen
instructions.
4. External USB Test—Verifies a numbered list with the device attached
to the external USB port (DPS port) directly through the USB. A
Success or Failure message appears on the LCD.
5. Clean Nozzles—Fires all printhead nozzles. The maintenance station
wipes them to help unclog/purge the nozzles. Prints the Nozzle
Cleaning page, and then returns to the Self Test menu when finished.
6. NVRAM Dump—Prints the contents of the flash NVRAM and display
then returns to the Self Test menu. Pressing Cancel during printing
stops the job, ejects paper, and causes the display to return to the Self
Test menu.
7. Clean NVRAM—Clears the non-protected area of the Flash-emulated
NVRAM by restoring values to default or initializing the values to 0x00s
or 0xFFs. When Clean NVRAM is selected, Clearing appears on the
LCD. If the function ends successfully, a Success message appears.
4416-XXX
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Diagnostic aids