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523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL
ENGLISH
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
Examine the power cord to ensure that it is connected to both the AC mains connector and a working, unswitched electrical outlet.
Make sure the preamp is powered on with the rear-panel Power switch. Examine the electrical circuit breaker to ensure that power is being
supplied to the electrical outlet to which the preamp is connected.
Make sure the preamp is not in standby. The front-panel standby LED illuminates fully and continually when the preamplifier is On. The LED flashes
slowly when the preamp is in Standby mode.
REMOTE CONTROL DOES NOT OPERATE
Eliminate obstructions between the remote control IR transmitter and the IR receiver on the front-panel display. Make sure the rear-panel IR input
connector is not being used.
Make sure the remote control is positioned within 17 feet (5m) of the front panel. If the chassis is placed inside a glass cabinet, tinted glass will
reduce the remote control range.
Make sure the remote control signal is being received at the IR receiver on the front-panel display at a reasonable angle.
Make sure the IR receiver on the front-panel display is not exposed to strong sunlight, halogen light, or fluorescent light. This can cause IR
reception to become unreliable.
Replace the remote control batteries.
NO SIGNAL AT THE OUTPUTS
Examine all audio cables to ensure a solid connection between the preamplifier and all associated components. Examine the speaker cables to
ensure a solid connection between the speakers and the amplifiers. Make sure that the connected speakers are operational. Make sure the volume
is set to an audible level.
Make sure the mute is deactivated. Make sure the Offset setting for the selected input is not reducing the volume to an inaudible level. Make sure
all associated components are connected to working electrical outlets and powered on. Make sure the source device connected to the preamp’s
selected input is producing an output signal.
MISSING INPUT
Make sure the Name parameter for the selected input has not been set to Unused in the Setup menu.
DIGITAL AUDIO DROPOUTS
Set PLL Lock to Wide for the digital input exhibiting the dropout problem.
TROUBLESHOOTING
TROUBLESHOOTING
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