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Mark Levinson
Troubleshooting
Incorrect operation is sometimes mistaken for malfunction. If
problems occur, refer to this section for troubleshooting infor-
mation. If problems persist, contact an authorized Mark Levinson
dealer or Customer Service at www.marklevinson.com.
1. No audio and the front-panel indicator LED is not lit.
• Examine ~ac mains connections to ensure the power cord is
connected to the ~ac mains connector and the electrical outlet.
• Make sure the Nº433 is powered on with the power button.
• Examine the electrical circuit breaker to ensure that power is
supplied to the electrical outlet to which the Nº433 is
connected.
• A power loss or power outage may have occurred. In this case,
power cycle the Nº433 with the power button, waiting at least
five minutes between powering the Nº433 off and on.
• A fuse may be blown inside the Nº433. In this case, disconnect
the power cord from the ~ac mains connector and the electrical
outlet. Then, contact an authorized Mark Levinson dealer. Do
not attempt to replace the fuse. There are no user-serviceable
parts within the Nº433.
Danger!
Potentially dangerous voltages and current capabilities exist
within the Nº433, even when power is disconnected from the ~ac
mains connector. DO NOT attempt to open the amplifier’s cabinet.
There are no user-serviceable parts inside the amplifier. Refer all
servicing to an authorized Mark Levinson dealer.
2. No audio and the front-panel indicator LED is dimly lit.
• The Nº433 is in sleep mode. To take it out of sleep mode, press
and release the standby button..
• A power loss or power outage may have occurred. In this case,
power cycle the Nº433 with the power button, waiting at least
five minutes between powering the Nº433 off and on.
3. No audio and the front-panel indicator LED is blinking
slowly.
• The Nº433 is in standby. To take it out of standby, press and
release the standby button. The Nº433 will power on.