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MAS SYSTEM
17
Troubleshooting
If the problem is... Make sure that...
Unit does not function when Power On Switch is pressed. Make sure the AC power cord is securely plugged into an unswitched outlet. t
If the “PROTECT” message appears, press and hold the remote control Power
button for at least 1 second to turn off the MAS system, then unplug the
system. Do not use the system again without first bringing it to an authorized
Harman Kardon service center for inspection.
Display lights, but there’s no sound. Press the Mute button to make sure the system is not muted. t
Turn up the volume. t
Check that the correct source was selected. If the source is an external t
device, make sure the device is plugged in, turned on and playing, and that it
is properly connected to one of the auxiliary inputs.
If the headphones are in use, unplug them. t
There is sound on only one side, or the sound is distorted. Make sure both speakers are securely connected with the correct polarity, t
and that no wires are touching each other and creating a short circuit.
There may be a problem with one of the speakers. Bring the MAS system to t
an authorized Harman Kardon service center for inspection and service.
The MAS system does not respond to remote commands. The batteries in the remote control may require replacement. t
The IR sensor may be blocked. The sensor is located on the right half of the t
controller’s front panel.
The tuner is buzzing intermittently. Adjust the placement of the antenna to improve reception. t
Check that the antenna is securely connected to the rear-panel terminal. t
You can find additional troubleshooting information in the FAQs link on the Support page at www.harmankardon.com.
Troubleshooting
This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. So if you have a problem, first check this list for a possible solution. If the
problem persists, consult your authorized Harman Kardon service center.