L0192A
31
MACHINE TROUBLESHOOTING CHART
IF A REPLACEMENT PART IS NECESSARY, PLEASE CONTACT YOUR DISTRIBUTOR
The following troubleshooting chart may be used to find quick remedies for electrical and mechanical failures in the
vendor.
Symptom
Possible Cause
Remedy
No power at the control board. (no
beeping sound during power-up or
when the service mode button is
pushed).
No power from power cord.
Check power cord, outlet or supply.
Check for tripped GFCI.
3.0 amp fuse is blown.
Replace 3.0 amp fuse.
Fuse harness is not connected to the
back of the fuse holder.
Connect fuse holder harness.
Short or cut in the power harness
between the transformer and control
board.
Check continuity through the power
harness. If there is no continuity
replace the power harness.
Transformer does not have power at
the 24 VAC secondary side.
Insure primary side of transformer is
receiving 120VAC power. If there is not
at least 29 VAC on secondary side
replace transformer.
Phone displays “Vend Failed” With
Control Box Open, the AMS Display
shows “Please Make Another Selec-
tion”.
Selection not configured in the motor
matrix.
Reconfigure the motors. Check for
appropriate motor coupling.
Motor jammed.
Clear jammed motor and clear error
code.
Vend not sensed by sensor.
Clear fault in sensor boards or harness:
possible control board error.
Tray selections do not make a
complete cycle with S2-H motors.
Harness off at the J-1, J-5 and/or J-6
connector on the control board.
Motor jammed.
Sensors blocked.
Connect harness to the control board
connector.
Check harnesses.
Tray selection continues to turn after a
successful vend.
Wrong motor or motor type: S2 motors
will not stop at Home position.
See
MOTOR TYPE
pg. 22.
7
TROUBLESHOOTING
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