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...

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...

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...

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