Power Supply Diagnostics - Bay-Tek Big Bass Wheel Service Manual

POWER SUPPLY DIAGNOSTICS

1.) Verify AC power to front of game. Check power strip in bottom front. Check for illuminated power switch.
2.) Check AC power connection to power supply.
3.) Ensure Power Supply switch is set to 115V (or 230V)
(Some model power supplies may not have this)
4.) Ensure Power switch is on.
No 12 Volts (Power Supply Fan is not turning), but AC to power supply is OK
This means that either:
1.) Motherboard is not telling the power supply to turn on.
2.) Power supply is faulty.
3.) There is a 12 volt short in cabinet causing power supply to remain off to protect itself.
Turn game power OFF. Disconnect all
connectors from power supply except large
connector on motherboard. Turn power ON.
Power supply fan
comes ON.
Turn power OFF. Plug in all connectors from power supply except
the cable going to I/O Aux Board. This will power LED lights.
Turn power ON.
Power supply fan
comes ON.
Turn power OFF. Unplug all outputs from I/O Aux Board. Reconnect
both connectors from Power Supply to I/O Aux Board.
Turn power ON.
Power supply fan
comes ON.
Turn power OFF.
Reconnect the outputs
at the Main Circuit
Board one at a time.
Wait 3 minutes be-
tween tests to turn
power ON.
Power supply fan
remains OFF.
Power supply fan
remains OFF.
Power supply fan
remains OFF.
Power supply fan
comes ON.
Power supply fan
remains off.
Replace Power Supply.
Part # AAPS1625
Short in LED cable or Light Control Board -
Examine cable and replace faulty cable.
Short in I/O Aux
Board. - Replace.
This cable is OK.
Plug in next cable.
This cable or component on this
cable such as a motor is causing
an overload. See Cable Pin-Outs
in manual to see which component
might be at fault.
39
AACB1900AMP
I/O Aux Board