Operation Manual

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 o. • 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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