Midway CART Fury Championship Racing, Руководство по эксплуатации

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C.A.R.T. FURY T
ROUBLESHOOTING
- 13
AUDIO TROUBLESHOOTING
Symptom Cause Required Action
• No audio
• Video is present
• Video Game Machine
(VGM) appears to
operate normally
Improper volume
setting Press and hold TEST MODE switch inside coin door to
enter Menu System. Select VOLUME MENU from the
Main Menu. Make sure the Attract Music is on
(enabled). Verify all volume levels are set well above
zero. If necessary, change levels to make game audi-
ble.
Faulty wiring Turn off power. Assure wiring harness connectors
attach and fully seat onto mating board connectors.
Verify harness connects to CPU Board. Check audio
cable connectors in same way.
Faulty or
obstructed
speaker Remove grilles and inspect speakers. Free speaker
cones, terminals, mounting screws and magnets of
loose parts or wires.
Faulty Audio
Board Verify proper operation of Audio Board by placing it in
a working VGM.
Power Problems Use 20-volt DC setting on digital voltmeter to measure
DC voltages present at Power connector pins. Verify
+5V, -5V and +12V sources. Refer to Cabinet Wiring
Diagram for specific wiring information and voltage
limits.
• Audio is distorted,
muffled or has missing
frequencies.
Faulty or improper
speaker 1. Turn off power. Remove grilles and check speak-
ers. Verify that speakers are full range (100 to
10,000 Hz response) and rated for at least 20
watts. Woofers must be rated for at least 40 watts.
2. Verify proper speaker operation by placing
speaker in question in a working VGM.
Faulty wiring Multiple-speaker installations: Check for reversed
wires at one speaker. Weak or low frequencies and
thin or hollow sound quality are symptom of incorrectly
phased speakers. Sound tests may not detect this
condition, but you can hear it during operation.
Improper Setting Press and hold TEST MODE switch inside coin door to enter
Menu System. Select SOUND TEST from Diagnostics
Menu. Increase volume as required. This test will verify
some audio circuit functions.
• Dead sound channel Faulty speaker 1. From Diagnostics Menu, choose SOUND TEST.
Recheck speakers with audio signals provided by
test.
2. Verify proper speaker operation by connecting
speaker in question to working Video Game
Machine (VGM).