Testing The Output To The Annunciators - Wayne Vista Series Service

B.4.4. Testing the Output to the Annunciators (see Figure B-14)
The annunciators in Vista dispenser are driven by a +4.8 to 5.2 VDC signal
originating on the Duplex II computer. To test the output to the annunciators
perform the following steps:
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FIGURE B-14. TESTING THE OUTPUT TO THE ANNUNCIATOR
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Part No. 917543 Rev. A
Set your meter on the 20 VDC scale.
Place the common lead of your meter on pin 2 of either the J13 or J14 connec-
tor (depending on the side of the dispenser which is being serviced).
Place the positive lead of your meter on pin 1.
Once the annunciator should be sounding (depending on option program-
ming the annunciator may sound at different times) your meter should
fluctuate from 0 to +4.8 to 5.2 VDC.
November 1992