Kalkomat Boxer - Red Diode Active on Main Board; Sound Is Not Working; Bill Acceptor Is Not Functioning

15
Bill Acceptor is not functioning:
1 Check if power supply cable is hooked up to main board
(J3).
2 Check if cable from bill acceptor is correctly hooked up.
3 Check acceptor settings using switches: for switches 1-8
set 7 at ON, and for switches 1-4 set 3 & 4 at ON.
Sound is not working:
1 Check if it is not at low volume or mute (R362).
2 Check if cable is correctly connected to the main board.
3 Check if cable to speaker is correctly connected.
Red diode active on main board:
1 Usually caused by circuit being shorted at scale bulb
array, check all cables for potential shortage.