Initially the coin mech accept gate path should be cleaned, this is the area the coin first enters the coin mech and contains the sensors that read the coin. Use a damp Cloth to clean surface dirt, any persistent grime can be cleaned off using a gentle cleaner, that will not leave a residue. (we recommend Windex). Ensure the product is dry after cleaning.

If problems continue, Guardian 6000s with poor acceptance can have their coin acceptance security level changed from the default high security to standard security, this should increase the acceptance level.

The procedure to change the coin acceptance security level from high to standard is:

Enter the Guardian menu system by pressing the menu button.

The display will show Main Menu Audit, press the down arrow (B) button to get to Setup, press Enter (C) button the display will now show Setup Float, press the down arrow (B) twice until you get to Coin Config, press Enter.

The display will show Coin Config Coin Enable, press the down arrow (B) button twice to get to Security level, press Enter (C) button.

The display will now show MDB Level, press the down arrow (B) button to get to Scale Factor, press Enter (C) button.

The display will now show two pages of instructions followed by a screen showing a list of the coins followed by a H (for high security), note a screen displaying To accept al press ENTER is shown periodically, do NOT press Enter until you have finished changing all the setting you wish to change.

Use the down arrow (B) to change the H to an S (standard security) on the AU5c coin, then use the right arrow (F) to select the next coin and once again use the down arrow (B) to change the H to an S.

Then use the right arrow (F) to select the next coin and once again use the down arrow (B) to change the H to an S. Continue this procedure until the security setting for all coins have been changed, the AU$1 and AU$2 will appear on another page after the AU50c coin.

When all settings have been changed press the Enter (C) button to accept the changes.

If this does not fix the problem the unit should be returned to a Coin Acceptors service centre for service.