Specifications

Sylllpt0m
* Video Game Machine
(VGM) does not start.
D VGM accepts cur-
rency or tokens.
l Audio and video are
present.
b Video Game Machine
(VGM) appears non-
functional.
1 Currency acceptor
price indicator is illumi-
nated.
~ 1 Required ActionCause
___-
Faulty wiring ~ 1. Assure no wires are caught in hinges, latches or
switch contacts.
2.
Check wiring continuity from circuit board connec-
tors to acceptors.
-
Power problem
Faulty wiring
Faulty circuit
boards or Arcade
Computer
Inspect circuit boards under low-light conditions
l The LED’s glow and the fan turns when proces-
sor circuits receive voltage and indicate pres-
ence of DC from power supply. However.
voltages or signals may not be normal.
Switch on power to game machine and measure
DC voltage settings. Refer to the Cabinet Wiring
Diagram for specific wiring information and volt-
age limits.
l Set the digital voltmeter to the 20-volt DC set-
ting and measure the power connector pins.
Adjust the +5V source if necessary.
l Set the digital voltmeter to the 2-volt AC setting
and measure DC voltages at power connector
pins. Any reading here indicates that supply
voltages are unstable and may contain ripple or
noise.
I
Switch off power to game. Check both wiring har-
ness connectors and other types of connectors to
make sure they fully seat onto mating board con-
nectors.
Run power-up self-test sequence. Note errors or
failures during test.
Switch off power to Arcade Computer, but NOT
the game machine. Wait for HDD to stop spinning,
then loosen the thumbscrews on computer cover
and remove. Listen for beeping sounds.
TROUBLESHOOTING - 4
MIDWAY AMUSEMENT GAMES. LLC