Paxar 656 / 636 user manual Print

Print

Problem Probable Cause Corrective Action

Machine advances stock but does not print.

1)Stock registration sensor miss aligned.

1)Adjust sensor position so that the sensor light on the front panel flashes as a sense slot or hole passes under the sensor.

2)	Miss adjusted print head position.	2)	Set print head position. Refer to
			"Print Head Tangent Point".
3)	Miss adjusted print head pressure.	3)	Set print head pressure. Refer to
			"Print Head Pressure Setting".

4)Print head cable unconnected or faulty.

4)Power off the machine and reinsert the offending connector or replace cable.

5)	Print head faulty.	5)	Replace print head.
6)	Head Driver Board unplugged or	6)	Check Head Driver Board / AT
	faulty.		board connection and or replace
			Head Driver Board.

Machine stops after ever third label.	1) Stock registration sensor miss
	aligned.

1)Adjust sensor position so that the sensor light on the front panel flashes as a sense slot or hole passes under the sensor.

2) Stock registration sensor	2) Using TP13 and R51 on the
uncalibrated.	Thermal Control Board re
	calibrate the sensor. Refer to
	"Sensor Trim Pots".

Print registration is off in the feed direction.

1)	Feed pressure setting is off.	1)	Set feed pressure. Refer to
			"Mechanical Adjustment Of Feed
			Roller Pressure".
2)	Print position is incorrect.	2)	Enter the setup menu and readjust
			the print setting as needed.
3)	Field(s) position incorrect in the	3)	Using formatter check and
	format.		readjust the field(s) position(s) as
			needed.
4)	Bound platen roller.	4) Check that the platen roller turns
			freely on it's shaft. If it does not
			replace it.

Users Manual Model 656/636 Electrical Trouble Shooting • 49