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Troubleshooting & Maintenance Mark Levinson
No Main Output
1. Examine audio cables to ensure a solid connection between the Nº51
and associated components.
2. Make sure master volume is set to an audible level.
3. Make sure mute is deactivated.
4. Make sure the Nº51 main output connectors are connected to an
operational power amplifier, and that the associated power amplifier
is connected to operational loudspeakers.
5. Make sure all associated components are powered on and connected
to electrical outlets.
6. Make sure the associated component connected to the selected input
is producing an input signal.
7. Contact an authorized Mark Levinson dealer.
No Video Output
1. Examine the video cables to ensure a solid connection between the
Nº51, the associated components and the display.
2. Examine the settings on the display to ensure the correct settings and/or
inputs are utilized.
3. Make sure that the three-position, video output switch on the rear panel
of the Nº51 is in the correct position for the video output that is desired.
For more information, see “Video Output Switch” on page 3-14.
4. Contact an authorized Mark Levinson dealer.
No Audio and/or
Video Output
Using HDMI
Output
1. Examine the HDMI cable from the Nº51 to the associated components
and the display. Check that the HDMI cable is properly connected and
seated in the HDMI input and output ports.
2. Make sure that the three-position, video output switch on the rear
panel of the Nº51 is in the HDMI (bottom) position. For more infor-
mation, see “Video Output Switch” on page 3-14.
3. Review the HDMI video settings in the Video Setup menu. For more
information, see “Edit Display Profile: HDMI Out” on page 3-20.
4. Review the HDMI audio settings in the Audio Setup menu. For more
information, see “Outputs: HDMI Audio Preferences” on page 3-3.
5. Contact an authorized Mark Levinson dealer.