Mark Levinson 53 Manuel du propriétaire télécharger pdf (Page 32)

Mark Levinson

Fault Protection

The Nº53 is designed to prevent damage to itself and associated

components. These extensive features protect both the critical

circuitry of the amplifier itself and shield connected loudspeakers

from serious damage due to critical high-power levels.

Basic protections designed into the Nº53 include fuses on the AC

input line for each transformer to protect against excessive current

conditions, such as driving shorted outputs. Inrush limiting

prevents premature aging of the power supply components during

power-up; once the power supply has been charged, this feature

goes off-line until the amplifier is powered up again.

The Nº53 power amplifier also incorporates a controlled clipping

circuit. This circuit reduces the harsh high-frequency harmonics

typically generated when an amplifier goes into clipping.

ML Net Fault Conditions

The slave devices in an ML Net system can report fault conditions to

the master device. Fault condition reports are displayed on the

display of the master device when the fault occurs.

When a fault condition occurs, the Nº53 mutes the amplifier output

and the main power supply is shut down. The Nº53 remains in fault

mode until the fault condition is resolved and the amplifier is

power-cycled (turn off the rear panel Power switch, wait at least 10

seconds, then turn the Power switch on). If the fault cannot be

resolved, contact your authorized Mark Levinson dealer or contact

Mark Levinson customer service.

The fault conditions reported are:

• Slave Device DC Offset – indicates that the Nº53 amplifier is

experiencing a signal-related fault.

• Slave Device Over Current – indicates that the Nº53 is

experiencing an over-current condition.

• Slave Device Over Temperature – indicates that the Nº53

amplifier is overheating.

• Signal – indicates that the Nº53 has experienced a general

signal fault.

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Mark Levinson 53 Manuel du propriétaire Page 32