Midway Off Road Thunder Operation Manual

							Wiring & Circuit Information          4-11
BB12 Audio Amplifier Board Schematic, 1/4 
						

							Wiring & Circuit Information          4-12
BB12 Audio Amplifier Board Schematic, 2/4 
						

							Wiring & Circuit Information          4-13
BB12 Audio Amplifier Board Schematic, 3/4 
						

							Wiring & Circuit Information          4-14
BB12 Audio Amplifier Board Schematic, 4/4 
						

							Wiring & Circuit Information          4-15
MagicBus Interface Board Assembly 04-12697.3
MagicBus 
Interface Board Switches
Designation Location Function Positions State Meaning
S1-7 Right Center Near
D19 – D26USB / UART
Mode Selector2 Off UART Mode
On USB Mode
S1-8 Right Center Near
D19 – D26Host W atchdog
Reset2 Off W atchdog
Enabled
On W atchdog
Disabled
Notes:
1.  Bank 1, Switch 8 should be off for Offroad Thunder. See the table above.
2.  Bank 1, Switch 7 should be off for Offroad Thunder. This switch selects USB or UART Mode. This
video game machine doesn’t support USB Mode.
3.  Bank 1, switches 1 through 6 have no assigned function. Leave these switches off.
4.  Bank 2, switch 1 through 8 have no assigned function. Leave these switches off. 
						

							Wiring & Circuit Information          4-16
MagicBus Board LED Indicator Table, 1/2
LED # Location Function Color State Meaning
LED 28 Left Center, Near
Fuse F2 &Off No +12V
+12V Power
for OutputConnector JP12 Indicator Red On +12V Present
Lamps Blinking Intermittent +12V
LED 27 Off No +5V
+5V Power for
AnalogRight, Near DIP
Fuse F1Indicator Red On +5V Present
Inputs Blinking Intermittent +5V
LED 10 Off Not In Use
Communi-
cationRight Center, Near
DIP Switch S1Indicator Red On Communication
Error
Blinking Normal Operation
LED 9 Off Not In Use
EEPROM Right Center, Near
DIP Switch S1Indicator Red On EEPROM not
responding
Blinking Normal Operation
LED 8 Off Not In Use
Security Right Center, Near
DIP Switch S1Indicator Red On Security error
Blinking Normal Operation
LED 7 Off Not In Use
MagicBus
ResetRight Center, Near
DIP Switch S1Indicator Red On MagicBus Reset
Blinking Normal Operation
LED 6 Off Faulty MagicBus
Board
MagicBus
ProgramRight Center, Near
DIP Switch S1Indicator Green On Faulty MagicBus
Board
Running Blinking Normal Operation
LED 5 Off Not In Use
UART / USB
ModeRight Center, Near
DIP Switch S1Indicator Green On Faulty MagicBus
Board
Blinking W ith 4 & 3: UART;
Individually: USB
LED 4 Off Not In Use
UART / USB
ModeRight Center, Near
DIP Switch S1Indicator Green On Faulty MagicBus
Board
Blinking W ith 5 & 3: UART;
Individually: USB 
						

							Wiring & Circuit Information          4-17
MagicBus Board LED Indicator Table, 2/2
LED 3 Off Not In Use
UART / USB
ModeRight Center, Near
DIP Switch S1Indicator Green On Faulty MagicBus
Board
Blinking W ith 5 & 4: UART;
Individually: USB
LED 1 Off No Power
Power to
MagicBus
Center, Near
Fuse F2Indicator Red On Power Present
Board Blinking Intermittent Power
MagicBus Interface Connector & Jumper Table
Jumper Location Function Meaning Setting Default
JP 1 Upper Right Blue High Impedance Open„
Between Video Low Impedance 1 & 2
(Note 1) JP4 and JP2 Impedance High Impedance 2 & 3
JP 2 Upper Right Green High Impedance Open„
Between Video Low Impedance 1 & 2
JP1 & JP3 Impedance High Impedance 2 & 3
JP 3 Upper Right Red High Impedance Open„
Between Video Low Impedance 1 & 2
(Note 3) JP2 & JP5 Impedance High Impedance 2 & 3
JP 4 Upper Right Video Positive Sync Open
Near Sync Negative Sync 1 & 2„
(Note 3) JP1 & JP2 Polarity Positive Sync 2 & 3 
						

							Wiring & Circuit Information          4-18
Wheel Driver Board Assembly 04-12770.1
Wheel Driver Board Led Indicator Table
Designation Location Function Color State Meaning
LED 1 Right Center, Near
C5 & P2Indicator Red Off Not In Use
On Normal Operation
Blinking Power Fault
(Note 1)
Notes:
1. LED 1 monitors regulated power supply voltage source. Must be on continuously. Flash or blinking
indicates intermittent connection, power problem, circuit fault, etc. 
						

							Wiring & Circuit Information          4-19
Wheel Driver Board Schematic, 1/8 
						

							Wiring & Circuit Information          4-20
Wheel Driver Board Schematic, 2/8