Midway Gauntlet Dark Legacy Universal Conversion Kit Service Manual

							CHAPTER
Gauntlet: Dark Legacy Universal Conversion Kit 41
Troubleshooting
NOTICE: 
This Chapter only covers repair of items included in conversion kit. For information on 
repairing or maintaining original components, please refer to original manual. 
						

							42Midway Games West Inc.
Chapter 5 Troubleshooting
Game Does Not Start
Game cannot be played
Symptom Problem Suggested Solution
• Machine appears non-
functional
 No audioLack of electricity 1. Check that Power Switch has been turned on
2. Verify that line cord is plugged fully into receptacle and 
into power supply.
3. Try another power outlet.
 Machine appears non-
functional.
 Currency acceptor price 
indicator is illuminatedFaulty AC line filter 1. Inspect board assemblies under low light level condi-
tions. A glow will be seen from the Light Emitting 
Diodes if there is voltage in the processor circuits. This 
does not mean that voltages or signals are as they should 
be, but it indicates that boards are receiving some DC 
power from power supply. The power supply fan should 
also be operating.
2. Turn AC power off. Inspect board assemblies. Ensure 
JAMMA wire harness connector is attached and fully 
seated onto mating board connector. Check other wiring 
harness connectors in same way.
3. Verify game switches and jumpers are set correctly. Refer 
to Board Configuration Chart for variables and default 
settings.
1. Turn AC power on. Using 20V DC setting on digital volt-
meter, measure voltages at power connector pins. Adjust 
+5V source if necessary. Refer to Cabinet Wiring Dia-
gram for specific wiring information and voltage limits.
2. Using 2V AC setting on digital voltmeter, measure same 
DC voltages as above. A reading indicates that supply 
voltages are unstable and may contain ripple or noise.
Symptom Problem Suggested Solution
 Game does not accept 
currency or tokens.
 Game does not start.
 Audio present
 Video presentIncorrect software 
setting1. Enter Menu System by pressing TEST MODE switch. 
From SELF TEST menu, choose COIN OPTIONS. Con-
firm pricing and setup of each mechanism.
2. Choose CONTROL TESTS to check operation of each 
coin or bill mechanism.
 Bill validator fails after 
field installation.
 Coin mechanisms oper-
ate properly.1. Enter Menu System by pressing TEST MODE switch. 
From SELF TEST menu, choose COIN OPTIONS. Con-
firm pricing and setup of each mechanism. Check valida-
tor switch settings against manufacturer’s instructions.
2. Check illumination of external coin door indicators (i.e., 
pricing, flashing arrows). Free parts or wires caught in 
hinges, latches, or switch contacts. Verify seating of har-
ness connectors. Check validator cable continuity.
3. Place bill validator in known good unit to verify opera-
tion. 
						

							Gauntlet: Dark Legacy Universal Conversion Kit 43
Chapter 5 Troubleshooting
Audio Problems
Video Problems
Game accepts currency 
or tokens.
Game does not start.
Audio present
Video present.1. Ensure proper mounting of each mechanism. Verify each 
release latch isclosed and locked. Test acceptance and 
rejection functions with known good and bad coins.
2. Ensure no loose parts or wires are caught in hinges, 
latches, or switch contacts.
3. Inspect illumination of external coin door indicators (i.e., 
pricing, flashing arrows). Check wiring continuity of 
connectors and cables from CPU Board to coin mechs.
4. Enter Menu System by pressing TEST MODE switch. 
From SELF TEST menu, choose COIN OPTIONS. Use 
tests to confirm pricing and setup of each mechanism.
5. Check for continuity in each suspect switch connection 
(Common to Normally Open or Commont to Normally 
Closed) Replace faulty switches (bent levers, broken 
actuators, etc.)
6. Place coin mechs in known good unit to verify operation.
Audio non-functional.
Video present.
Game operates normally.Volume set too low 1. Press TEST MODE switch to enter Menu System. From 
SELECT TEST menu, choose ADJUST VOLUME. Ver-
ify that attract and game volume levels are not set to zero. 
Change to appropriate levels.
2. Return to previous menu and choose SOUND TESTS. 
Verify operation of each speaker.
Audio muffled, dis-
torted, or missing fre-
quencies.
Constant, low hum.Faulty speaker 1. Press TEST MODE switch to enter Menu System. From 
SELECT TEST menu, choose SOUND TESTS. These 
verify some audio functions.
2. Using 2 volt AC setting on digital voltmeter, measure 
voltages at speaker terminals. Any reading here indicates 
supply voltages are unstable and may contain ripple or 
noise.
3. Place speaker in good machine to verify operation.
Symptom Problem Suggested Solution
Power-up self test runs.
Game does not appear.
No audio.Error message Record error messages. Press TEST switch to enter menu 
system. From SELECT TESTS menu, choose DISK 
TESTS. These tests verify hard disk drive functions.
Faulty hard disk 
drive1. Turn off AC power. Unlock and open front door. Ensure 
hard disk cable connector is fully seated on CPU Board. 
Ensure all hard drive mounting screws are installed.
2. Ensure hard disk, ROM set and CPU Board Assembly are 
correct part for game. Each component is labeled with the 
assembly number and software or hardware version.
Symptom Problem Suggested Solution 
						

							44Midway Games West Inc.
Chapter 5 Troubleshooting
Miscellaneous
Symptom Problem Suggested Solution
Game resets randomly. 1. Check fan assemblies on CPU Board Assembly. Ensure 
fans are connected to power sources.
2. Check cabinet and Electronics Assembly ventilation 
holes for obstructions.
3. Clear obstructions and allow ventilation holes access to 
fresh air.
Error messages appear.
Game does not start.
No audio.1. Check any assembly identified in error message.
2. Call your authorized distributor for help with unresolved 
screen messages.