Microprocessor
What's the Problem Is this the Cause Here's the Solution
1) The digital readout on the display panel shows a “0” on the far right, or shows an irregular or unusual combination of numbers. 1) 102 microprocessor card has lost or scrambled memory. 1) Refer to “E-Prom” 101 card usage directions. If this does not work call ABC.
2) Microprocessor is plugged into power and no lights appear on the display panel. 2) Blown fuses 2) Inspect fuses inside gray microprocessor box. Replace with any size fuse up to 5amp.
) Microprocessor is plugged into power, nothing is registered on the display panel, but one or more pitching machines are running. 3a) Defective 104 output card 3a) Replace 104 card.
3b) 102 microprocessor card has scrambled program. 3b) Refer to “EPROM” 101 card usage direction. If this does not work call ABC.

For Dual Machine Systems:

What's the Problem Is this the Cause Here's the Solution
4) Game registers on display panel but does not begin operation. 4a) Bad connection between diverter processor block and diverter circuit board. 4a) Disconnect power from main processor. Carefully remove “diverter processor block” and reinstall.
4b) No 5VDC present at “7288” diverter board. 4b) Check for voltage 5VDC between red and black wire, located at top left section of diverter board. If voltage is not present, check connections between diverter board and processor mother board, replace wires as necessary.
4c) Bad connection between diverter board and Processor mother board. 4c) Tighten all screws on the diverter board and processor mother board.
4d) Defective diverter processor block. 4d) Replace “7283” diverter processor block.
4e) Defective diverter processor block. 4e) Replace “7288” diverter circuit board.