CONDITION
POSSIBLE CAUSES
POSSIBLE SOLUTIONS
No power.
• Mains power cord unplugged from mains
power source or from M22’s AC mains input.
• Connect the mains power cord to M22’s AC mains
input and then plug into a mains power source.
• Power switch is off.
• Switch ON the Power switch.
• M22 at standby mode.
• Press
o
(Standby) button to switch ON the M22
from standby mode.
M22 always at standby mode; cannot
be switched ON using the
o
(Standby)
button.
• A mono plug is plugged-in at the +12V
TRIGGER IN port of the rear panel.
• Unplug the mono plug.
No sound.
• No input signal applied through the analog
audio input ports.
• Check that there is active input signal applied
through the analog audio input ports.
• External source volume control is set to
minimum level.
• Turn up external source’s volume control until
audio is heard.
No sound one channel.
• Speaker not properly connected or damaged.
• Check connections and speakers.
• Input lead disconnected or damaged.
• Check leads and connections.
There is no BALANCED audio output.
• SELECT switch is set to SINGLE-ENDED.
• Set SELECT switch to BALANCED.
There is no SINGLE-ENDED audio output.
• SELECT switch is set to BALANCED.
• Set SELECT switch to SINGLE-ENDED.
REFERENCE
TROUBLESHOOTING
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