Avery Dennison LOKPRINT I - Manual (Page 11)

Users Manual LOKPRINT™ 2. Troubleshooting •••• 11
2. Troubleshooting
2.1 Troubleshooting Mechanical
2.1.1 Tape Contact
If the tape fails to make proper contact with the heater platen, stop the printer. This
will save on unsublimated labels. Check to see if the flag sensor is adjusted properly
to signal when the rollers are in the lowest possible position.
2.1.2 Tape Release
The Tape Rollers should release and swing to the “up” position when there is a halt
in the printing sequence or if the power has been cut from either machine. If the
Tape Rollers fail to bring the tape to the highest possible position, check to see if the
Lift Spring is in position. The spring may wear with excessive use. Remove the tape
from the rollers and test by holding down the Tape rollers and letting them rise up
into position.
2.1.3 Feed Roller
The Feed Rollers have two springs that supply even tension for tracking. If the
tracking of the tape fails, check to see if one of the springs may have come
unattached, and reattach. The feed rollers are also equipped with a hand knob used
to thread the machine. This knob should turn freely with very little resistance. If
resistance occurs, check to see if the bearings need to be greased. Also check to see
that the timing belt tension is not excessive.
2.2 Troubleshooting Electrical
2.2.1 Defective Heater Elements
If the heater elements are suspect, due to improper heating, the probable cause is
that one of the heaters is burned out. The heater connections can be found on the
terminal block in the back of the cabinet. A multimeter can be used to test the
heaters. Each heater should read 300 ohms or lower (depending on model), a
discontinuity means that the heater is burned out. (Refer to the schematic for correct
connections)
2.2.2 Defective Thermocouple
The thermocouple wire is defective when the heaters are overheating and the digital
read-out on the FUJI Temperature Controller is reading room temperature.