Midway Off Road Thunder Operation Manual

							Wiring & Circuit Information          4-1



	
TM




WIRING & CIRCUIT
INFORMATION
WARNING: 
Failure to reconnect ground wires or replace metal shields may result in
radio frequency interference.
NOTICE: 
The term VGM refers to the video game machine. 
						

							Wiring & Circuit Information          4-2
Harness Connector Prefixes
Prefix Connector Location Example
1 Arcade Computer 1P1
2-- --
3
MagicBus
 Interface Board3P1
4 Fluorescent Lamp 4P1
5 Power Supply 5P1
6 Video Monitor 6P1
7 W heel Driver Board 7P1
8 Coin Door Area 8P1
9 BB12 Audio Board 9P1
10 LED Interconnect Board 10P1
11 Cabinet 11P1
12 Optional Overhead Marquee 12P1
13 Dashboard 13P1
14 Gas Pedal & Brake 14P1
15 Upper Speakers 15P1
16 Seat Speaker 16P1
17 Dash LED Board 17P1
NOTICE:
 Look for the connector prefix on wiring diagrams. The prefix shows you
where you’ll find the connector. 
						

							Wiring & Circuit Information          4-3
Power Wiring Diagram 
						

							Wiring & Circuit Information          4-4
Cabinet Wiring Diagram 
						

							Wiring & Circuit Information          4-5
Player Panel Wiring Diagram 
						

							Wiring & Circuit Information          4-6
Computer Motherboard Assembly 20-10554
MOTHERBOARD CONNECTOR AND JUMPER STATUS
(NOTES FOR TABLE ON FOLLOWING PAGE)
NOTICE: 
The term VGM refers to the video game machine.
NOTES:
1. VGM doesn’t require jumper or telephone connection.
2. VGM doesn’t require jumper. VGM uses proprietary network for game linking.
3. VGM doesn’t require connections. VGM has no ATAPI devices (CD ROMs).
4. VGM doesn’t require jumper. Tamper-detection security feature isn’t installed.
5.  Connect processor module fan to this jack. Computer may become unreliable if processor overheats.
6.  Connect processor module to this jack. 242-pin socket accepts single microprocessor modules.
7. VGM doesn’t require connections. Case cooling fans connect directly to power supply.
8. VGM doesn’t require connections. VGM doesn’t use SCSI devices (Hard Drives).
9.  Connect reset cable from Filter Board to this jack. VGM doesn’t use front-panel devices.
10.  Jumper must be set over pins 1 & 2 for this VGM. VGM won’t run with incorrect or missing jumper.
* Replacement Motherboards may not include this jumper. Refer to Parts to order extra shunt jumpers. 
						

							Wiring & Circuit Information          4-7
Motherboard Connector and Jumper Status Table
Designation Location Function Meaning Setting Default
J1A1 Lower Right W ake Not Used In This Open„
Near Board On VGM (No 1 & 2
(Note 1) Expansion Slot Ring Telephone)
J1E1 Lower Center W ake Not Used In This Open„
Near Board On VGM (No
(Note 2) Expansion Slot LAN PC LAN)
J1F2 Lower Center CD Audio Not Used In This Open„
Near Board Input VGM (No
(Note 3) Expansion Slot Circuit CD Player)
J2F1 Lower Center CD Data Not Used In This Open„
Near Board Input VGM (No
(Note 3) Expansion Slot Circuit CD Player)
J2F2 Lower Center Telephony Not Used In This Open„
Near Board Input VGM (No
(Note 1) Expansion Slot Circuit Telephone)
J2F3 Lower Center Auxiliary Not Used In This Open„
Near Board Input VGM (No
(Note 3) Expansion Slot Circuit Aux Devices)
J3F1 Middle Center Chassis Not Used In This Open„
Near CPU Intrusion VGM (No 1 & 2
(Note 4) And Fan Circuit Intrusion)
J3F2 Middle Center Processor Two Speed Fan Open
Near CPU Fan For Processor 1, 2, & 3„
(Note 5) And Fan Circuit Cooling
J4J1 Center Left System System Open
Module W ith Micro- Micro- Filled„
(Note 6) Fan Assembly Processor Processor
J4M1 Center Left Processor Controlled Fan Open„
Near CPU Fan For Processor 1, 2, & 3
(Note 7) Module Circuit Cooling
J7M1 Upper Left Case Controlled Fan Open„
Near Power & Fan For Hard Disk 1, 2, & 3
(Note 7) Floppy Jacks Circuit Drive Cooling
J8J1 Upper Left SCSI Not Used In This Open„
Between Hard Drive VGM (No 1 & 2
(Note 8) & Floppy Jacks Indicator SCSI Drives)
J8FR Upper Center Front Only Reset Open
Near Hard Disk Panel Pins Are Used 1 & 2„
(Note 9) Drive Jacks Devices In This VGM
J8A1 Upper Right Configur- Starts System Open
Near Battery ation Setup Routine 1 & 2„
(Note 10) And Speaker Select or Operation 2 & 3 
						

							Wiring & Circuit Information          4-8
Network Interface Board Assembly 20-10550
Network Interface LED Indicator Table
Designation Location Function Color State Meaning
LED 1
(LNK)Left Center
Under JackLink Verify
IndicatorGreen Off Not In Use
(No Game Link)
On Normal
Operation
Blinking Link Fault
(Note 1)
LED 2
(ACT)Right Center
Under JackActivity
IndicatorGreen Off Not In Use
(No Data)
On Receiving Data
(Note 2)
Blinking Normal
Operation
Notes:
1. Intermittent cable or hub problems may cause blinking. Blinking must be continuous during linked
operation.
2. Blinks during data packet exchange. Blinking may appear continuous during heavy network activity. 
						

							Wiring & Circuit Information          4-9
Video Graphics Board Assembly 20-10551
Video Graphics Connector And Jumper Table
Designation Location Function Meaning Setting Default
J1 Left Center Video Graphic Open
(DB-15 on Signal Information 1-15„
(Note 1) Bracket) Output To Interface
J2-J7 None --- Not Used Open„
(Note 2)
JP2 None --- Not Used Open„
(Note 2)
Notes:
1. Connects to Interface Board through shielded cable. Doesn’t connect directly to monitor.
2. Manufacturer option connectors and jumpers. Not required for this VGM. 
						

							Wiring & Circuit Information          4-10
BB12 Audio Amplifier Board Assembly 04-12529.1
BB12 
Audio Amplifier LED Indicator Table
Designation Location Function Color State Meaning
LED 1
(CR1)Upper Center
Near C3Fault
IndicatorRed Off Normal
Operation
On Locked Up
(Note 1)
Blinking Overload
(Note 2)
LED 2
(CR2)Lower Center
Near U2 & U6Fault
IndicatorRed Off Normal
Operation
On Locked Up
(Note 1)
Blinking Overload
(Note 2)
NOTES:
1. Active output protection circuit. Attempt to reset circuit by clearing fault and removing power.
2. Intermittent audio overload or overheating may cause blinking. LED should flash only during startup.