Lexmark 436 Error message about reading the flash drive appears, Incorrect characters print, Step

Troubleshooting 276

Error message about reading the flash drive appears

Action	Yes	No
Step 1	Go to step 2.	Insert the flash drive
Check if the flash drive is inserted into the front USB port.		into the front USB port.
Note: The flash drive will not work if it is inserted into the rear USB
port.
Is the flash drive inserted into the front USB port?
Step 2	Wait until the printer is	Go to step 3.
Check if the indicator light on the printer control panel is blinking green.	ready, then view the
Note: A green blinking light indicates that the printer is busy.	held jobs list, and then
	print the documents.
Is the indicator light blinking green?
Step 3	Go to step 4.	The problem is solved.
a Check for an error message on the display.
b Clear the message.
Does the error message still appear?
Step 4	Go to step 5.	The problem is solved.
Check if the flash drive is supported.
For more information on tested and approved USB flash drives, see
“Supported flash drives and file types” on page 67.
Does the error message still appear?
Step 5	Contact customer	The problem is solved.
Check if the USB port is disabled by the system support person.	support.
Does the error message still appear?

Incorrect characters print

Action	Yes	No
Step 1	Deactivate Hex Trace	Go to step 2.
Make sure the printer is not in Hex Trace mode.	mode.
Note: If Ready Hex appears on the printer display, then turn off the
printer, and then turn it back on to deactivate Hex Trace mode.
Is the printer in Hex Trace mode?
Step 2	Contact customer	The problem is solved.
a From the printer control panel, select Standard Network or	support.
Network [x], and then set SmartSwitch to On.
b Resend the print job.
Do incorrect characters print?