Your machine's bill validator can be set so that certain denominations are not accepted and returned to the user.
First, gain access to the lower half of the bill validator in the machine's vault. You'll need a small Hex screw to do so, and a picture walkthrough can be found in our mounting instructions.
Once the vault plate is removed, remove the validator head an transport by gently pulling forward on the green tab pictured below:
Take care as delicate cabling follows behind the validator. If needed, disconnect the validator harness from the cabling in the vault at the white molex junction.
The DIP switches on the validator transport are circled here:
Using a toothpick flip the switches to ON in order to DISABLE certain denomination bills, according to the Software Information Sheet for your currency.
The Software Information Sheet can be found on JCM's software search page.
To find yours, fill in your country, then hardware (likely iVIZION 100), stacker type (SU), and protocol ID (003). If you have questions on your particular bill validator or firmware, please contact us at email@example.com.