Royal 600sc Instruction Manual page 24

Chapter 3: Getting To Know the Cash Register
To use the counterfeit detector feature
1 Put the paper money in the slot in the front of the cash register.
2 Press the UV light button. The UV light turns on.
3 Look thru the small window on the front of the cash register. If the bill
4 When you are done, remove the bill from the slot. Press the UV button
Things to Remember
The counterfeit detector feature in the cash register uses ultra-violet light
(UV light) technology and only works on new style US paper currency.
This currency has the large portrait of a US president, off-center on the
front of the bill. Old style U.S. bills, printed before 1996 and all $1 bills do
not have any fluorescent markings. These bills do not react to UV light and
the counterfeit detector in cash register does not show any fluorescent
markings on these bills, even though they may be valid US bills and not
counterfeit.
Keep in mind that any one method of counterfeit detection, including the
UV light mechanism built-in to the cash register, is not fool-proof and only
suggests suspicious paper currency.
Using this counterfeit detection feature is open to user interpretation of the
reading of the currency under the UV-light. If no fluorescent markings are
seen on a US bill, then consider the bill suspicious. This may not mean that
the bill is definitely counterfeit. Use other counterfeit detection methods to
further examine the suspicious bill. If the US dollar bill fails multiple
counterfeit detection methods, then the bill may be counterfeit and you
must decide whether to accept the bill or not.
The opposite may also apply, when a US dollar bill may show fluorescent
markings under UV-light, but there is still a slight chance that the bill is a
very sophisticated counterfeit bill. There are no absolute guarantees to the
authenticity of a US dollar bill without the use of very high-end,
sophisticated testing methods and devices.
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2 UV light button
has the strip, you see a strip that glows as a color. See the table above for
the correct color. If the bill is Canadian, you see blue dots.
again. The UV light turns off.
3 Look in window
1 Insert paper bill
Alpha 600sc User's Guide