13
does not change when rotating the potentiomer,the
potentiometer is faulty and should be replaced and rewired
per the schematic.When requesting a replacement,contact
the Ledco service dept and refer to the potentiometer for
part # PRM219 motor speed control.The motor drive should
then be restored.If not,you should now consult a servicing
dealer/technician,the Ledco service dept. or proceed to the
next,Advanced,troubleshooting level.
3)
Advanced.
After all previous checkpoints have been
confirmed and there is still no drive,the motor control board
and/or the drive motor now must be checked.Disconnect the
power cord and remove the right side plastic housing.Locate
the drive forward/reverse switch.Trace the two center
terminal lead wires from the switch to their respective
connectors to the black and red drive motor lead wires.
Place your multimeter probes inside the connectors,set at
volts DC.Now connect the power cord to the laminator and
engage the forward drive switch.With the potentiometer at
the lowest setting,you should get between 0 to10 volts on
the meter.With the potentiometer set at it’s highest,100%,
you should get between 90 to 96 volts.If no voltage is
present,and you have already checked the switch and
potentiometer for integrity,the motor control board(part #
PRM219) is faulty and should be replaced.If the prescribed
range of voltage is present and there is still no motor drive,
the drive motor(part # PRM220) is faulty and
it
should be
replaced.
To replace these parts you must remove the bottom
motor cover to gain access to the motor control board and
the motor as described in SECTION 2,A-3
