Hex Trace - Lexmark Optra 4044-XXX Service Manual

4044-XXX
USB NPA
USB NPA mode allows for two way communication between the host
and the printer.
Perform the following steps to change the USB NPA setting:
1. Enter the configuration mode.
2. Perform a double click button press nine times. This moves to
the USB NPA mode item on the configuration menu. The USB
NPA (Error) LED is blinking.
3. The current USB NPA setting is indicated by the Off/On/Auto
(Press Button) LED.
•
When the LED is off, the USB port does not search for NPA
data within the received data.
•
When the LED is *blinking, the USB port searches for
optional NPA data within the received data.
•
When the LED is on solid, the USB port requires that data
sent to the printer be in NPA format.
4. Perform a brief button press to select a different USB NPA
setting.
5. Perform a long button press. All LEDs blink once, indicating the
setting is saved.
6. Exit the configuration mode by turning the printer power off.

Hex Trace

When the printer is in Hex Trace, it prints a hexadecimal and a
character representation of a print job. The printer does not
recognize any print controls or commands in this mode. A Hex Trace
printout is used to help isolate the cause of print problems.
When a job is printed, the printer operator panel displays the Hex
Trace indication, (Ready LED blinking), showing that the printer
remains in the Hex Trace mode. Turn the printer power off or do an
operator panel reset (long button press) to exit the Hex Trace mode.
Perform the following steps to enter the Hex Trace mode:
1. Turn the printer power off.
2. Open the top cover.
3. Turn the printer power on.
Diagnostic Aids
3-11