4-1
Troubleshooting & Maintenance
Incorrect operation is sometimes mistaken for malfunction. If problems
occur, see this section for troubleshooting information. If problems
persist, contact your authorized Mark Levinson dealer.
No Power
1. Examine the power cord to ensure that it is connected to both the rear
panel connector of the Nº502 and an electrical outlet.
2. Make sure the Nº502 is powered on with the power button.
3. Make sure the Nº502 is not in Standby mode (the LED should not be
slowly blinking).
4. Examine the electrical circuit breaker to ensure that power is being
supplied to the electrical outlet to which the Nº502 is connected.
Remote Control
Doesn’t Work
1. Eliminate obstructions between the remote control IR transmitter and
the front panel display IR receiver/transmitter. The remote control
must be in line-of-sight with the front panel IR receiver for proper
operation.
2. Replace the remote control batteries. Verify that the remote control
batteries are inserted correctly with the proper polarity.
3. Make sure the IR input connector is not being used.
4. Make sure the front panel display IR receiver/transmitter is not
exposed to strong sunlight, halogen light, or fluorescent light. This
can cause IR reception to become unreliable. If the Nº502 is placed
inside a glass cabinet, tinted glass will reduce the remote control
range.
5. If you have multiple Mark Levinson products, verify that you are
using the proper remote control for the product in question.
No Audio Output
1. Make sure that the source device is powered on, playing audio, and set
to the right output connector.
2. Make sure the master volume is set to an audible level.
3. Make sure that the volume is not muted. The LED beside the front
panel Mute button should not be illuminated.
4. Examine audio cables to ensure a solid connection between the Nº502
and associated components.
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