Zebra Technologies ZT400 manual 153

			Troubleshooting
			RFID Problems
	Table 4 • RFID Problems (Continued)
Problem	Possible Cause	Recommended Solution
Low yields. Too many	The RFID labels are not within	Make sure that the labels meet transponder
RFID tags per roll	specifications for the printer,	placement specifications for your printer. See
are voided.	which means that the	http://www.zebra.com/transponders for
	transponder is not in an area	transponder placement information.
	that can be programmed	For more information, refer to the RFID
	consistently.	Programming Guide 3, or contact an authorized
		Zebra RFID reseller.
	Incorrect read and write power	Change the RFID read and write power levels.
	levels for the RFID tag type.	For instructions, refer to the RFID Programming
		Guide 3.
	Radio frequency (RF)	Do one or more of the following as necessary:
	interference from another RF	•	Move the printer away from fixed RFID
	source.		readers.
		•	Make sure that the media door is closed at all
			times during RFID programming.
	The printer is using outdated	Go to http://www.zebra.com/firmware for
	printer firmware and reader	updated firmware.
	firmware versions.
The printer stops at	The printer calibrated the label	1.	Select FEED for the MEDIA POWER UP and
the RFID inlay.	length only to the RFID inlay		HEAD CLOSE parameters (see Power-Up
	instead of to the interlabel gap.		Action on page 72 or Head-Close Action
			on page 73).
		2.	Manually calibrate the printer (see Calibrate
			the Ribbon and Media Sensors on page 119).
The DATA light	The download was not	1.	Turn off (O) the printer.
flashes indefinitely	successful. For best results,	2.	Wait 10 seconds.
after you attempt to	cycle power on the printer	3.	Turn on (I) the printer.
download printer or	before downloading any
		4.	Attempt to download the firmware again.
reader firmware.	firmware.
		5.	If the problem persists, contact Technical
			Support.

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