Product specifications

T
ROUBLESHOOTING
- 14 M
IDWAY
A
MUSEMENT
G
AMES
, LLC
MISCELLANEOUS PROBLEM TROUBLESHOOTING
Faulty circuit
board
Run power-up self-test sequence. Note errors found
during tests. Compare CPU Board LED’s with LED
Indicator Status Charts. Note discrepancies.
• Constant low hum
from all speakers.
Faulty wiring 1. Check cabinet wiring is correct.
2. Verify cabinet wiring provides separate wires (not
common return) for each speaker.
3. Check connection of all cabinet ground wires.
Faulty power sup-
ply
Use 2-Volt AC setting on digital voltmeter to measure
voltages at speaker terminals. Any reading indicates
unstable supply that may contain ripple or noise.
Symptom Cause Required Action
• Marquee lamp is inter-
mittent or non-func-
tional
• Video Game Machine
(VGM) starts and
plays normally
Faulty fluorescent
tube
1. Remove fluorescent tube from sockets. If you find
cracks or darkened ends, install new lamp. Clean
tube.
2. Check continuity of both fluorescent tube fila-
ments.
3. Check lamp ballast is rated for local AC line volt-
age and frequency.
4. Verify fluorescent tube operates by placing it in
working VGM.
Faulty lamp fixture 1. Verify lamp pins make good connection with
socket contacts.
2. Check the ballast and/or starter are working prop-
erly.
Faulty wiring Measure fluorescent lamp AC voltages. Check wiring
and connector continuity from AC power chassis to
lamp assembly.
• VGM operates nor-
mally
• Cabinet becomes
warm after several
hours of use
Obstructed fan 1. Check bottom and rear of cabinet for blocked air-
flow.
2. Move VGM away from sources of heat.
3. Turn off power. Remove dust from vent holes with
high-power vacuum cleaner.
Faulty Wiring Check fan wiring and connectors.
Faulty fan Check operation of all fans.
• Error messages
appear on screen
Faulty hardware 1. Check any assembly (RAM, ROM, Battery, etc.)
identified in error messages.
2. Call your authorized distributor for help with unre-
solved screen messages.
Symptom Cause Required Action