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Mars 6800-H problem


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#1 evilaces

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Posted 09 August 2011 - 05:00 PM

Bought a rebuilt one and installed it in a 1997 Dixie can machine. Worked great when I first put it in and then quit accepting quarters the same day. There is a red light on inside the coin mech that says (BLOCKER) I have tried tuning but maybe I'm doing that wrong. Please help!!

#2 H4UV

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Posted 09 August 2011 - 08:13 PM

Here is the tuning procedure:
  • Power down the machine.
  • Unlatch and remove the acceptor from the mech, but do not unplug it from the main board.
  • On the TRC-6800H, you will see two sets of pins behind the acceptor once you remove it, protruding from the main board cover half way down.
  • Take a screwdriver (I use a medium Phillips) and short the two upper pins. While holding the screwdriver in place as the short, power up the machine again, and hold the short there for about 6 seconds.
  • Remove the short, and replace the acceptor.
  • Insert in this order, 2 nickels, 2 dimes, 2 quarters, 2 dollar coins, (if you do not want the changer to accept dollar coins, press the coin return lever twice instead of inserting 2 dollar coins.)
  • Power down the machine, and power back up again. Test the changer.
  • NOTE: If ANY coins are accepted during the tuning process, you have either not shorted the pins right, or you shorted the wrong pins. Try the process again if this happens.
Try this first and see if a change is made.