Testing The Fuses On The Duplex Ii Computer - Wayne Vista Series Service

B.4.7.

Testing the Fuses on the Duplex II Computer

There are three pico fuses on the Duplex II computer; these look physically
similar to a resistor, but are beige in color. The pico fuses are socketed and
are field replacable. The functions of the fuses are as follows:
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To test one of the pico fuses perform the following steps (see Figure B-17):
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FIGURE B-17. TESTING THE PICO FUSES ON THE DUPLEX II COMPUTER
November 1992
F1 fuses the input to the 5 VDC regulator on the computer.
F2 fuses the input to the 12 VDC regulator and is present on blending
computers only.
F3 fuses the AC input to the computer.
Set your meter on AC at a voltage which corresponds to the dispenser
control power.
Touch one meter lead to each lead of the fuse being tested. You should
read 0.0 VAC; if you read the control power the fuse is bad.
Part No. 917543 Rev. A
111