Changer Control Board Update Installation Overview
The Rowe dollar bill changer control board update kits are designed for simple installation and programming. It is
not necessary to cut any wiring, as all harnessing will plug into the changers existing harnesses and assemblies.
This kit replaces the changers existing control board, power supply, and BA50 transport. The count sensors,
hoppers, and hopper motors are reused.
The board is capable of processing $1, $2, $5, $10, and $20 bills. The validator determines the bill denominations
actually accepted.
It is important to follow these procedures for a trouble free installation:
1.
Review the Theory of operation.
2.
Review the Programming Instructions and Troubleshooting Tips.
3.
Begin the conversion.
Theory of Operation for Changer Control Board Update
It is assumed that the hoppers are filled, the dip switches are set correctly, and the validator is accepting bills
properly.
Dollar Acceptance
Upon accepting a bill, the validator pulses the board once per dollar value. ($5 equals five pulses, $20 equals twenty
pulses) Once the board receives pulses, relay K1 opens preventing additional bills and coins from being accepted.
The progress/empty bulb on the changer’s door will light to signal change making is underway. The payout begins
with the right hopper, then the center, and finally the left hopper. The amount of coins dispensed for each dollar
value pulse received is determined by the dip switches in banks R, C, and L. As each hopper is energized, an LED
on the control board lights to verify proper operation. Coins are paid out directly from the hoppers, thus the
escrow buckets are not needed. Once the payout sequence is complete, the meter will register one pulse for each
dollar value received. Relay K1 will be energized enabling the acceptance of bills and coins.
Shut Down Modes
The control board shuts down when a malfunction is detected or when a hopper is low. The cause of the
malfunction is indicated by the status LED on the board. Once the problem has been corrected, pressing the reset
button restores the board to normal operation. The status LED codes are listed in the troubleshooting section of
these instructions.
Low Coin Levels
Coins are paid out directly from the hoppers; eliminating the need for the escrow buckets. A “low coins screw”
can be installed as a part of the update. It is used to disable the validator when the coin level in a hopper is low.
The part is generally not required as the bill box of the MEI validator will be filled before the hoppers empty. This
assumes hoppers are filled to near capacity.
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