STEP #1:
The powerroll motor has a built in automatic thermal overload circuit and will automatically reset itself after 30 to 45 minutes. Turn the checkstand off and allow the powerroll to cool down for this specific period of time. If the unit is turned on and still does not start then proceed to step #2. If this solves the problem, but only temporarily then the motor is most likely faulty:

STEP #2:
Check to make sure you have power reaching the checkstand by plugging a calculator or radio into the “Dirty” outlet that has a brown outlet cover. The checkstand runs off the “Dirty” power and the computer equipment runs off the “Clean” outlet, which has an orange outlet cover. It is possible for the computer equipment to be receiving power while at the same time the checkstand power could be tripped off the circuit breaker. If the checkstand is not receiving power then, check the circuit breaker. If the stand has power then proceed to step #3.

STEP #3:
This step involves checking the “Brain” module that controls the photo eyes on the conveyor belt. In order to check the module the access panel will need to be removed. The access panel is located on the cashier side of the belt drive unit. Remove the panel by pushing up and pulling out the electrical access panel. Look inside for the control box. There you will be able to locate the module mounted on the side wall. The module is a plug in unit usually held on by a single screw. The checkstand will have either a Tri-Tronics PM7101 or a Tri-Tronics PM7200 series system, which should be printed on the unit. It will be important to identify which unit the checkstand is using. The PM7101 is black with two red lights. The PM7200 is tan and has one red light and one green light (this information will be required in order to continue the troubleshooting and to order parts). Make sure the module is plugged in firmly into the receptacle. Try again to operate the belt. If the belt is still not working properly proceed to step #4.



STEP #4:
The Tri-Tronics module plugs into a matching receptacle. Pull the module out and trade it with a module from a checkstand that is operating correctly. If the original checkstand is now functioning correctly then the original Tri-Tronics module is defective. Call Killion customer service with a description of the faulty module and a serial # of the checkstand (located near the terminal stand). If this doesn’t solve the problem then proceed to step #5 if the checkstand is using a PM7101, and step #6 if checkstand is using a PM7200 module.


STEP #5: PHOTO EYE CHECK PM7101 SERIES:
With the control module plugged in, the on-off switch turned ON look at the lights on the module; the belt should be stopped and the lights off. While still looking at the control module reach up and cover the photo eye closest to you. The beam light should go on. Continue looking at the control module and remove your hand. Both lights should go on and the belt should run for 10-20 seconds. When the belt stops both of the lights should go out. If the light sequence works, there is a problem with the motor or the connection to the motor. If the light sequence doesn’t work, there is a problem with the photo eyes or the connection to the photo eyes.


STEP #6:PHOTO EYE CHECK PM7200 SERIES:
With the control module plugged in, and the on-off switch turned ON look at the lights on the module; the belt should be stopped and the lights off. While still looking at the control module reach up and cover the photo eye closest to you; the green light should go on. Continue looking at the control module and remove your hand; the green beam light should go out, the red beam should go on and the belt should run for 10-20 seconds. When the belt stops both lights should go out. If the light sequence does work there is a problem with the motor or then connections to the motor. If the light sequence doesn’t work, there is a problem with the photo eyes or the connection to the photo eyes.

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