Midway Gauntlet Dark Legacy Universal Conversion Kit Service Manual

							Gauntlet: Dark Legacy Universal Conversion Kit 31
Chapter 3 System
These verify Hard Disk Drive functions. Some files can be repaired. These tests are automatic and the 
results appear on the menu screen as they occur. There are no custom settings or adjustable variables in 
these tests. The Player 2 START button aborts the tests.
Hard Drive Connected test verifies interface between CPU Board Assembly and Hard Disk Drive. The 
processor requests disk information. Data cannot be retrieved if there is a problem.
Drive ID is an industry standard identification for Hard Disk type and capacity. This is a manufacturer 
hardware number only; it does not identify software or program stored on drive assembly.
Logical Sector Test performs a sector by sector read/verify test on the drive. As the status of each block of 
sectors is checked, the speed of data transfer is compared to its acceptance limits.
Tests Completed These tests run over and over. The number increases each time the test cycle repeats 
(approx. every 5 minutes). After at least one cycle (pass) is complete, note any errors and press the 
Player 2 START button to end the test.
Checking File performs a file by file check of data stored on the hard disk drive and reports its findings. If 
there are errors, the system tries to fix them (approx. 5 minutes per cycle). The system reports on the sever-
ity of the errors and advises if they will affect game performance.
DISK TESTS
DRIVE READ TEST
Hard Drive Connected: Yes
Drive ID: XXXXXX
Logical Sectors Available: XXXXXXX
LBA MB/sec
12216 5.862 avg
4.541 min
5.917 max
Tests completed: 1
To return to menu, Press P2 START or CREDIT
DRIVE READ TEST MENU SCREEN
FILE SYSTEM CHECK
Total files used: XXXX
Passes completed: X
Checking File: XXXX
To return to menu, Press P2 START or CREDIT
FILE SYSTEM TEST SCREEN 
						

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Chapter 3 System
Use this menu to set the correct time and date for your location.
SWITCHES AND JUMPERS
The CPU and Sound I/O Boards have several hardware variables that can be changed to adapt this assem-
bly to other uses. Jumpers activate circuit paths, and DIP switches select instructions.
Switches
There is one pushbutton switch on the CPU Board Assembly. It resets the CPU Board and restarts the 
game without turning off the power supply. There are two DIP switches on the Sound I/O Assembly at U12 
and U13. See Wiring Chapter for further explanation.
Jumpers
Jumpers control signals to other components in this game. These signals match production audio amplifi-
ers, speaker system, and video monitors.
Active circuit paths are factory optimized during the board test procedure. Leave jumpers in original 
positions to avoid program error messages.
Errors
The system detects errors at startup or during diagnostic tests and reports them on screen. The system 
automatically repairs errors such as minor disk data faults. Fix other errors, such as player control calibra-
tion, by manually resetting values in game memory. Gauntlet: Dark Legacy Universal Conversion Kit gen-
erally continues to operate (but with reduced performance) after discovering minor errors.
Record error messages before attempting to correct a problem. The USER MESSAGES report may store 
additional temporary messages (refer to STATISTICS earlier in this chapter).
After recording messages, turn off AC power, wait a few minutes, then turn AC power on. Pay attention 
to the startup screens and note any error messages during Power On Self Tests. If possible, enter the SELF 
TEST MENU SYSTEM and run all tests related to where errors occurred. Record and compare any new 
messages to the previous ones to determine whether errors are random or chronic.
SET RTC
NOTICE. 
Do not ignore error messages even if you can start and operate the game. Poor performance 
caused by playing games with errors may reduce earnings.
SET RTC
Date: day mo date year
Time hr min
SET RTC MENU SCREEN 
						

							CHAPTER
Gauntlet: Dark Legacy Universal Conversion Kit 33
Wiring
NOTICE: 
Information in this manual may change without notice. Midway Games West Inc. reserves 
the right to make improvements in equipment function, design, or components as progress in engineer-
ing or manufacturing methods may warrant. 
						

							34Midway Games West Inc.
Chapter 4 Wiring
EDGE CONNECTOR CHART
FUNCTION WIRE COLOR PIN PIN WIRE COLOR FUNCTION
Ground Black A 1 Black Ground
Ground Black B 2 Black Ground
+5VDC Red C 3 Red +5VDC
+5VDC Red D 4 Red +5VDC
-5VDC Yellow E 5 Yellow -5VDC
+12VDC Orange F 6 Orange +12VDC
Key N/C H 7 N/C Key
Coin Counter 2 Brown-Red J 8 Brown Coin Counter 1
Not Used N/C K 9 N/C Not Used
Speaker -, Left Brown-Gray L 10 Red-Gray Speaker +, Left
Speaker +, Right Brown-White M 11 Red-White Speaker-, Right
Video Green Yellow-Green N 12 Yellow-Red Video Red
Video Sync Yellow-White P 13 Yellow-Blue Video Blue
Service Credits White-Gray R 14 Yellow-Black Video Ground
Slam Tilt Black-Green S 15 Black-Blue Test
Coin 2 Black-Red T 16 Black-Brown Coin 1
Player 2 Start Violet-White U 17 White Player 1 Start
Player 2 Up Violet-Black V 18 White-Black Player 1 Up
Player 2 Down Violet-Brown W 19 White-Brown Player 1 Down
Player 2 Left Violet-Red X 20 White-Red Player 1 Left
Player 2 Right Violet-Orange Y 21 White-Orange Player 1 Right
Player 2 Fight Violet-Yellow Z 22 White-Yellow Player 2 Fight
Player 2 Magic Violet-Green a 23 White-Green Player 1 Magic
Player 2 Run Violet-Blue b 24 White-Blue Player 1 Run
Not Used N/C c 25 N/C Not Used
Not Used N/C d 26 N/C Not Used
Ground Black e 27 Black Ground
Ground Black f 28 Black Ground
SOLDER SIDE COMPONENT SIDE
Joystick control wires that are not part of the main JAMMA Harness
Ground Black 1 1 Black Ground
Not Used N/C 2 2 N/C Not Used
Not Used N/C 3 3 N/C Not Used
Key N/C 4 4 N/C Key
Not Used N/C 5 5 N/C Not Used
Player 3 Start Blue-White 6 6 Blue-WHite Player 4 Start
Player 3 Up Blue-Black 7 7 Blue-Black Player 4 Up
Player 3 Down Blue-Brown 8 8 Blue-Brown Player 4 Down
Player 3 Left Blue-Red 9 9 Blue-Red Player 4 Left
Player 3 Right Blue-Orange 10 10 Blue-Orange Player 4 Right
Player 3 Fight Blue-Yellow 11 11 Blue-Yellow Player 4 Fight
Player 3 Magic Blue-Green 12 12 Blue-Green Player 4 Magic
Player 3 Run Blue 13 13 Blue Player 4 Run
Not Used N/C 14 14 N/C Not Used
DC Power Source Voltage Limits
Function Range Limits Color Function Range Limits Color
Digital Circuits +4.90V to +5.10V Red Coin  -4.75V to -5.25V Yellow
Audio, Lights +11.5V to +12.5V Orange Aux Power -11.5V to -12.5V Blue 
						

							Gauntlet: Dark Legacy Universal Conversion Kit 35
Chapter 4 Wiring
MAIN CABINET WIRING DIAGRAM 
						

							36Midway Games West Inc.
Chapter 4 Wiring
VEGAS CPU BOARD ASSEMBLY
VEGAS CPU ASSEMBLY SWITCH
Note: This switch resets the CPU Board without turning the power off at the power supply.
Designation Location Function Positions State Meaning
S1 Edge near U4 
and U5Resets and 
Restarts 
Game2OffNormal 
Operation
On Forced Reset 
						

							Gauntlet: Dark Legacy Universal Conversion Kit 37
Chapter 4 Wiring
VEGAS CPU BOARD ASSEMBLY JUMPER POSITION CHART
Note 1:  Set both jumpers J1 and J3 to EPROM or Flash ROM mode to use such devices.
Note 2: These jumpers are independent
Note 3: This jumper is independent of the CPU boot ROM size selected
VEGAS CPU BOARD ASSY LED INDICATOR STATUS CHART
Note 1 LED1 monitors CPU power (+3.3 Volts). If this LED is off or blinking, investigate processor circuits. If 
other LEDs are off or blinking at the same time, check the +5 Volt circuits or game power supply.
Note 2 LED2 flashes when hard disk operates during game play. It may light continuously during startup. If 
this LED lights continuously, there may be a fault with the hard disk drive, which may be locked up.
Note 3 LED3 initially indicates program start-up stages. It is a seven-segment alphanumeric display device. 
Under normal conditions, it displays a lowercase “b” or a sequentially blinking segment in an “O” pat-
tern. During any of the self-test screens, it displays a “bouncing bar” resembling a hyphen (“-”).
Designation Location Function Meaning Position Deafult
J1 (Note 1) Near U19 &  CPU Boot ROM  EPROM Pins 1 & 2 X
Connector P4 Type (U18) Flash ROM Pins 2 & 3
J2 (Note 2) Near U19 & 
CPU Boot ROM  1, 2, or 4Mbit flash ROMPins 1 & 2 X
Connector P4
Size (U18) 8 Mbit flash ROMPins 2 & 3
J3 (Note 1) Near U19 &  CPU Boot ROM  EPROM Pins 1 & 2 X
Connector P4 Type Flash ROM Pins 2 & 3
J4 (Note 2) Near U19 &  CPU Boot ROM  2Mbit ROM Pins 1 & 2 X
Connector P4 Size (U18) 1Mbit ROM Pins 2 & 3
J5 (Note 3) Near U19 &  Expansion Boot 4Mbit ROM Pins 1 & 2 X
Connector P4 ROM Size (U19) 8Mbit ROM Pins 2 & 3
J6 Between U13 Boot Program
Boot from CPU ROMPins 1 & 2 X
& U18 Location
Boot from SIO ROMPins 2 & 3
Designation Location Function Color State Meaning
LED1 (Note 1) Near U3 & U10 3.3V CPU Power Red Off Insufficient Power
Indicator On Power OK
Blinking Power Fault
LED2 (Note 2) Near U19 & Hard Disk  Green Off Not in use
Connector P4 Drive Activity On Locked Up
Blinking Normal disk activity
LED3 (Note 3) Near U13 & U17 Indicator Red Off* *See Note Below
On*
Blinking* 
Sequentially 
						

							38Midway Games West Inc.
Chapter 4 Wiring
VEGAS SOUND I/O ASSEMBLY
VEGAS SOUND I/O BOARD ASSY JUMPER POSITION CHART
Note 1 Set Gun 1 (P2) I/O port by setting both J1 and J8 jumpers to input or output mode.
Note 2 Set Gun 2 (P4) I/O port by setting both J3 and J5 jumpers to input or output mode.
Designation Location Function Meaning Position State
J1 (Note 1) Near U9 &  Gun 1 I/0  Input Mode Pins 1 & 2 X
Crystal Y3 Connector P2 Output Mode Pins 2 & 3
J2 Between U35 and U10 Video Sync Positive Sync Jumper Not Installed X
Negative Sync Pins 1 & 2
J3 (Note 2) Near U15 Gun 2 I/O Connector P4 Input Mode Pins 1 & 2 X
Output Mode Pins 2 & 3
J4 None None Not Used None ---
J5 (Note 2) Between U15 &  Gun 2 I/O  Input Mode Pins 1 & 2 X
Connector P2 Connector P4 Output Mode Pins 2 & 3
J6 None None Not used None ---
J7 None None Not Used None ---
J8 (Note 1) Between U9 & Gun 1 I/O Input Mode Pins 1 & 2 X
Connector P4 Connector P2 Output Mode Pins 2 & 3 
						

							Gauntlet: Dark Legacy Universal Conversion Kit 39
Chapter 4 Wiring
VEGAS SOUND I/O BOARD ASSEMBLY LED INDICATOR STATUS CHART
Designation Location Function Color State Meaning
LED1 Near U11 SIO Board Green Off No boot ROM
Activity On SIO Board locked up
Blinking Power Fault
LED2 Near U34  Linking Green Off Not in use (no game linking)
Crystal Y1 Connector Status On Normal Linked Operation
Blinking Link Fault
LED3 Near the Jamma -5V Power Red Off No power
Connector indicator On Normal operation
Blinking Power fault
LED4 Near U35 & +12V Power Red Off No power
Connector P14 indicator On Normal operation
Blinking Power fault
LED5 Near  +5V Power Red Off No power
Connector P23 indicator On Normal operation
Blinking Power fault
LED6 Near U34 &  CPU Linking Red Off Not in use
Crystal Y1 Activity On CPU linking in progress
Blinking Normal operation
LED7 Near U34 &  Linking Data Red Off Not in use (no game linking)
Crystal Y1 On Sending data
Blinking Normal operation
LED8 Near U14 &  Audio Activity Yellow Off No sound boot ROM
Crystal Y1 On Locked up
Blinking Normal operation
LED9 Near U34 &  Linking Yellow Off Not in use (no game linking)
Crystal Y1 Receiving data On Receiving data
Blinking Normal operation
LED10 Near U44 &  Audio activity Green Off Not in use (no audio data)
Crystal Y2 On Receiving data
Blinking Normal operation
LED11 Near U44 &  None Red Off Not in use (normal)
Crystal Y2 On Circuit fault
Blinking Circuit fault
LED12 Near U44 &  Interrupt activity Yellow Off Not in use (no interrupts)
Crystal Y2 On Receiving data
Blinking Normal operation
LED13 Near U44 & Disk Activity Yellow Off Not in use
Crystal Y2 On Processing data
Blinking Normal operation 
						

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Chapter 4 Wiring
VEGAS SOUND I/O ASSEMBLY DIP-SWITCH SETTINGS
Service technicians may change DIP-switches with AC power on. “*” indicates factory defaults.
DIP Switch U12SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
Monitor resolution Standard
MediumOff
On*
Monitor Style Video Game
VGAOff*
On
Joystick Type 8-Way
49-WayOff*
On
Switch Condition Normally Closed
Normally OpenOff
On*
Vegas Sound I/O
Board VersionRevisions 1 to 5
Revisions 6+Off
On*
Not UsedOff*
On
Not UsedOff*
On
Not UsedOff*
On
DIP Switch U13SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
Display Comments on 
VT100No
Ye sOff*
On
Diagnostic Code Source Hard Disk Drive EPROM Off*
On
Not Used Off*
On
Not Used Off*
On
Not UsedOff*
On
Not UsedOff*
On
Not UsedOff*
On
Not UsedOff*
On