Mark Levinson 502 - Automatic Calibration Errors

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Troubleshooting & Maintenance Mark Levinson
Automatic Calibration Errors
During the Automatic Calibration, errors that may occur are reported
at two points – after the Check Microphones test and after the Run
Automatic Calibration procedure. When the two routines are run,
any errors are logged and then reported when the procedure is
complete.
The tables below include listings of the possible errors, the
description of each error, and troubleshooting information for
resolving the errors.
Check Microphones
Test
Refer to the table below for information about errors occuring during
the Check Microphones Test.
MESSAGE DESCRIPTION TROUBLESHOOTING
(microphone) OK
The microphone detected the
calibration noise signal without error.
N/A
(microphone)
NOT DETECTED
The Nº502 did not detect the micro-
phone during the silence check.
• Examine the microphone input connections to ensure
that the microphones are properly connected to the
Nº502 and that the microphone cable plugs are fully
inserted for a solid connection.
• The microphone might be damaged. Contact an
authorized Mark Levinson dealer for assistance.
(microphone)
SIGNAL TOO LOW
The Nº502 detected the microphone
during the silence check. However,
the microphone level determined
during the silence check was not
confirmed during the microphone
check.
• Examine the microphone input connections to ensure
that the microphones are properly connected to the
Nº502 and that the microphone cable plugs are fully
inserted for a solid connection.
• The microphones might be positioned too far from the
front speakers. Refer to the microphone placement
examples in Chapter 3 to confirm that the
microphones are appropriately positioned for the
microphone check.
• The microphone might be damaged. Contact an
authorized Mark Levinson dealer for assistance.
(microphone)
OUT OF RANGE
The microphone level is more than
20dB below the highest microphone
level.
(microphone)
TOO MUCH ROOM
NOISE
The microphone level could not be
determined because of excessive
room noise in the listening space.
• Eliminate extraneous noises in the listening space,
including conversations, air conditioners, and sounds
that filter in through open doors and windows.
• The microphone might be damaged. Contact an
authorized Mark Levinson dealer for assistance.