Cash/Credit Interface Board Replacement; Solenoid Drive Board Replacement - Wayne Vista Series Service

7.1.5. Cash/Credit Interface Board Replacement (see Figure 7-4)
1. In order to access the cash/credit interface board remove the bezel from
2. Disconnect all wiring harnesses from the interface board.
3. Remove the screws which secure the board to the frame of the DEM.
4. Remove the cash/credit interface board.
5. Install the new board using the hardware removed in step 3.
6. Reattach all wiring harnesses to the new board.
7. Replace the DEM in its original position and reinstall the bezel.
7.1.6. Solenoid Drive Board Replacement (see Figure 7-5)
Note: Even though the dispenser control power is turned off voltage may still be
present at the solenoid drive board, this condition will continue until both 15
pin connectors are removed from the solenoid drive board.
In order to replace the solenoid drive board perform the following steps:
1. Turn the power to the dispenser OFF, and lock and/or tag the circuit
2. Remove the bezel from the dispenser.
3. Place the DEM in the service position.
4. Disconnect all of the wiring harnesses from the solenoid drive board.
5. Remove the one (1) screw shich secures the solenoid drive board to the
6. Pull the solenoid drive board straight off of the computer.
7. Install the new board using the reverse of the procedure described above.
8. Test the dispenser for proper operation.
November 1992
the dispenser and disengage the two quarter turn screws located above the
display. This will allow the DEM to tilt out toward you allowing access to
all internal electronic components in the dispenser.
breaker in the OFF position.
Duplex II computer.
Part No. 917543 Rev. A
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