Touchmaster
®
Conversion Kit
Troubleshooting - 11
•
Audio is distorted or
muffled.
•
A constant low hum
may be present.
•
Sounds may be
missing.
1. Unlock and remove the cash door.
2. Enter the VGM Menu System by pressing the
SETUP button.
3. From the SYSTEM SETUP menu, go to
DIAGNOSTICS and choose SOUND TESTS.
These tests will verify some of the functions of the
audio circuits in this VGM.
Bad speaker
1. Turn OFF the VGM.
2. Unlock and remove the cabinet cover.
3. Locate the speaker.
4. Ensure that it is FULL RANGE (100 to 10,000 Hz
response) and rated for at least 15 WATTS
continuous power.
Poor connection
1. Inspect the speaker and its wires.
2. Ensure that no loose parts or wires are caught in
speaker cone, terminals, mounting screws, or stuck
to the magnet.
Bad board
assembly
1. Verify that the sound ROM is correct for this VGM.
There is only one sound ROM in this VGM set. The
ROM circuit is labeled with the assembly number
and the software version.
2. Check that the cabinet wiring is correct for this
VGM.
3. Ensure that all cabinet ground wires are connected.
4. Refer to the Typical Cabinet Wiring Diagram for
specific wiring information.
Poor voltage
1. Using the 2 Volt AC range on a digital voltmeter,
measure voltages at the speaker terminals. Any
reading here indicates that the supply voltages are
unstable and may contain ripple or noise.
2. Verify that the speaker is operating properly by
placing in a known functional unit.
