Filter
Top Products
27
7. No audio and the front panel indicator LED is lit
at full brightness.
• The Nº432/431 is powered on, but is not passing a signal.
Examine signal cables to ensure a solid connection
between the Nº432/431 and the associated preamplifier
and loudspeakers.
8. The amplifier keeps powering off.
• A fault condition may be present at the input (e.g., a DC
signal from the preamplifier) or the output (e.g., short-
circuited loudspeaker wires). If this occurs:
a. Power the Nº432/ 431 off with the power button.
b. Disconnect the input signal and loudspeaker wires.
c. Wait 10 seconds.
d. Power the Nº432/431 on with the power button.
If the Nº432/431 powers on without entering standby or
sleep mode, a fault condition is present at the input or
the output. To isolate the problem:
a. Power the Nº432/ 431 off with the power button.
b. Reconnect the loudspeaker wires.
c. Power the Nº432/431 on with the power button.
If the Nº432/431 powers on into standby or sleep mode,
the fault condition is present at the input. If not, the fault
condition is present at the output.
9. If all else fails...
• Power cycle the Nº432/431 with the power button, waiting
at least 10 seconds between powering the Nº432/431 off
and on.
• Contact an authorized Mark Levinson dealer.
• Contact Mark Levinson Customer Service at 781-280-0300
or www.marklevinson.com.