Midway 40272, Game Operations Manual

Page: 82 / 93

Startup Troubleshooting,
continued
SYMPTOM
.
Video Game Machine
appears non-function&.
.
Currency acceptor price
indicator illuminated.
CAUSE
Power
Faulty
mpropar DIP switch
s e t t i n g s
circuit boards
REQUIRED ACTION
1.
Inspect circuit boards under low-light conditions.
The LED’s glow and the fan turns when
processor
receive voltage and indicate
presence of DC from power supply. However,
voltages or signals may not be normal.
2. Turn on power. Set the digital voltmeter to the
DC setting and measure DC voltages at
power connector pins. Adjust the source if
necessary. Refer to Cabinet Wiring Diagram for
information and voltage limits.
3 . Set the voltmeter to the Z-volt AC setting
and measure DC voltages at power connector
pins. Any reading here indicates that supply
voltages are unstable and may ripple or
Turn off power. Check harness connectors
attach and fully seat onto mating board
connectors. Verify harness connects to CPU
Board. Check other connectors in same way.
Verify switches are set as intended. Check DIP
switch
Run power-up self-test sequence. Note errors or
failures during test. Compare LED’s with LED
indicator status charts. Note
Press and hold TEST MODE
coin
door to enter Menu System. Select MONITOR
TEST from
Menu. Conduct test to
confirm operation of each screen used in the
game.
Front View of Coin Door
Troubleshooting 5