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Troubleshooting & Maintenance Mark Levinson
No IR Learning 1. Eliminate obstructions between the learning remote control
and the left side of the front panel display.
2. Adjust the distance between the learning remote control and
the left side of the front panel display.
3. Make sure the learning remote control and the left side of the
front panel display are not exposed to strong sunlight, halogen
light, or fluorescent light. This can cause IR reception to
become unreliable.
4. Make sure the learning remote control is configured to learn
commands.
5. Replace the learning remote control batteries.
No Main Output 1. Examine audio cables to ensure a solid connection between the
Nº 320S and associated components.
2. Make sure master volume is set to an audible level.
3. Make sure mute is deactivated.
4. Make sure the Offset parameter for the selected input is not
reducing master volume to an inaudible level.
5. Make sure the Nº 320S main output connectors are connected
to an operational power amplifier, and that the associated
power amplifier is connected to operational loudspeakers.
6. Make sure all associated components are powered on and
connected to electrical outlets.
7. Make sure the associated component connected to the selected
input is producing an input signal.
No Record Output 1. Make sure the Rec.Out parameter for the selected input has
been used to assign the selected input for a record output
connector.
2. Make sure the associated component connected to the selected
input is producing an input signal.
Audible Hum 1. If a cable TV connection is present, disconnect the cable from
the wall outlet. If this eliminates the humming sound, a ground
loop isolation device is required. Contact an authorized Mark
Levinson dealer for assistance.
2. Disconnect components one at a time to isolate the problem.
Once the problem is identified, make sure the problematic
component is properly grounded and connected to the same
electrical circuit as the Nº 320S.