Before removing the processor board, check the following areas:
- Perform hopper test in self test mode, if problem recurs replace optics
- Check hopper brake and brake spring
- With the escalator hopper, check the coin-out optics and mechanical flag to see if adjustment or spring may need replacement
- Check hopper pinwheel and wiper for smooth operation
- Check optic and optic wires for damage
- Verify optic ground lead is secured to chassis and hopper beau plug is seated firmly
If that doesn’t work, try the following steps:
- Check hopper plug for 8 to 9 VDC at J/P 19-8 and J/P 19-10 to J/P 19-9
- Replace the processor board with a “known good” one
- If the processor board seems bad, check eBay for replacement or repair service
- If the processor board is good, then replace the motherboard
- To repair the motherboard, use this diagram to isolate the bad trace
- If the motherboard and processor board are good, then use this diagram to test for wire continuity
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