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TROUBLESHOOTING
If there is no power...
Check to see if the power cord is plugged into both the IEC socket on the rear
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panel of the active speaker and into the AC mains. Verify that the AC mains are
active by using an approved AC tester or simply connect a lamp with a working
light bulb. In some cases, the AC mains may be controlled by a light switch or
power strip with a suppressor that may not be in the 'on' position.
Verify that the power switch on the active speaker is in the 'on' position.
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Check to see if the power light is illuminated. The power light is the KRK logo
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on the monitor's front panel. If the power light is not illuminated, turn the
power switch OFF and check the A/C mains fuse(s). The fuse is located directly
below the power receptacle.
NEVER USE A LARGER AMPERAGE FUSE THAN SPECIFIED!
After the fuse has been checked and replaced, turn the power switch back on.
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The power light should illuminate.
Check to see if a fuse change was needed. If you power the monitor back on
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and the fuse blows again, the monitor needs to be returned to the dealer or
distributor where you purchased it or to KRK for servicing.
If you can't hear certain sounds...
Repeat the steps in the previous troubleshooting section above before
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continuing to the next steps.
Check whether all other audio devices using the same AC outlet are still
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operating.
Check to see if the audio source cable is plugged into both the source output
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and the monitor input.
Check to see if the signal source (E.g., mixing console, workstation, CD player,
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etc.) is turned up to a level that can properly send a signal to the monitors.
Check to see if the audio source is in mono or stereo, or information in the mix
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may also be panned differently, which will result in differing cancellation. Audio
heard in stereo and not heard in mono may be a result of phase cancellation
due to long delays between left and right channels or polarity inversion. Avoid
polarity inversion by using matching cables.
Check to see if one of the monitors is working. Exchange the audio input cable
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from the non-working monitor to the working unit. This will determine whether
it's really the monitor, a faulty cable, or some other glitch in the audio chain.
If the monitor is still not responding, it should be returned to the dealer where
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you purchased it or to KRK for servicing.
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