Servicing
5-6
MICROPROCESSOR FAN.
Dis-
connect the DC power cable from
the floppy drive. Unplug the
ribbon cable from the floppy
drive. Leave the other end of the
cable attached to the CPU Board.
Unscrew and remove the circuit
board retention bars. Remove the
drive bracket mounting hardware.
Remove the bracket and drive.
Disconnect the fan’s power
harness. Remove the
microprocessor cartridge.
Squeeze the plastic end tabs on
the fan side of the cartridge.
While squeezing, carefully pry the
fan assembly away from the
heatsink. If the fan is bad, replace
the entire fan assembly with a
new one. Reassemble the
cartridge and insert it into the
computer. Then reconnect fan
power.
•
Floppy Disk Drive
Switch off power to the VGM. Unlock and remove the rear door. Remove the back of the Arcade
Computer. Disconnect the DC power cable from the floppy drive. Unplug the ribbon cable from the
floppy drive. Leave the other end of the cable attached to the CPU Board. Unscrew and remove the
circuit board retention bars. Remove the drive bracket mounting hardware. Remove the bracket.
Remove the drive mounting screws. Lift the drive off the mounting bracket. Save the mounting screws
for reuse in future floppy drive installations. When returning a floppy drive to your distributor, pack it in
an anti-static bag.
REINSTALLATION.
Mount the floppy drive in its bracket. Install the drive mounting screws. Reinstall
the bracket and drive in the Arcade Computer enclosure. Connect the drive’s ribbon and power
cables.
•
Gas and Brake Pedals
Switch off power to the VGM. Adjust the
seat to the maximum rear position.
Remove four outer mounting screws
from the front edges of the pedal plate.
Gently pull the pedal mechanism toward
the seat until the mechanism clears the
cabinet opening. Disconnect the pedal
cable from the wiring harness.
Disconnect the green / yellow safety
ground wire. Lift the pedal mechanism
up and away from the cabinet.
Summary of Contents for Offroad Thunder
Page 3: ...iii...
Page 4: ...iv...
Page 20: ...Operation 2 6 NOTES...
Page 60: ...Diagnostic Audit Adjustment Menu System 3 40 NOTES...
Page 63: ...Wiring Circuit Information 4 3 Power Wiring Diagram...
Page 64: ...Wiring Circuit Information 4 4 Cabinet Wiring Diagram...
Page 65: ...Wiring Circuit Information 4 5 Player Panel Wiring Diagram...
Page 71: ...Wiring Circuit Information 4 11 BB12 Audio Amplifier Board Schematic 1 4...
Page 72: ...Wiring Circuit Information 4 12 BB12 Audio Amplifier Board Schematic 2 4...
Page 73: ...Wiring Circuit Information 4 13 BB12 Audio Amplifier Board Schematic 3 4...
Page 74: ...Wiring Circuit Information 4 14 BB12 Audio Amplifier Board Schematic 4 4...
Page 79: ...Wiring Circuit Information 4 19 Wheel Driver Board Schematic 1 8...
Page 80: ...Wiring Circuit Information 4 20 Wheel Driver Board Schematic 2 8...
Page 81: ...Wiring Circuit Information 4 21 Wheel Driver Board Schematic 3 8...
Page 82: ...Wiring Circuit Information 4 22 Wheel Driver Board Schematic 4 8...
Page 83: ...Wiring Circuit Information 4 23 Wheel Driver Board Schematic 5 8...
Page 84: ...Wiring Circuit Information 4 24 Wheel Driver Board Schematic 6 8...
Page 85: ...Wiring Circuit Information 4 25 Wheel Driver Board Schematic 7 8...
Page 86: ...Wiring Circuit Information 4 26 Wheel Driver Board Schematic 8 8...
Page 99: ...Parts 7 3 Cabinet Rear View 01 10714 03 8326...
Page 101: ...Parts 7 5 Casters and Levelers...
Page 102: ...Parts 7 6 Rear Casters...
Page 105: ...Parts 7 9 Padlock 4320 01164 20B 01 11287 01 11286 4420 01141 00...
Page 106: ...Parts 7 10 Coin Door Assembly See Coin Door Application Table for Assembly Number...
Page 107: ...Parts 7 11 Pushbutton Assembly 20 9663 XX 20 10129 5 24 8880 24 8828...
Page 110: ...Parts 7 14 Optional Bill Validator...
Page 111: ...Parts 7 15 Cabinet Components...
Page 113: ...Parts 7 17 Casters and Leg Levelers...
Page 114: ...Parts 7 18 Throttle Assembly 20 10135 5014 12909 00...
Page 115: ...Parts 7 19 Fluorescent Lamp Assembly A 22506 20 10444 04 11241 1 24 8809 20 10481 2...
Page 117: ...Parts 7 21 Arcade Computer Mechanical Components...
Page 131: ...Parts 7 35 Line Cord Installation Bracket AC Plug Assembly A 23089...
Page 149: ......