KRK 10S - Manual (Page 18)

If there is no power, check to see if...
Troubleshooting
If you can’t hear any sound...
If the monitor suddenly stops working...
If you’re having trouble, check out these tips...
• The power cord is plugged into both the IEC socket on the rear panel of the unit and
into the AC mains.
• The AC mains voltage is matched to the operating voltage requirements (see
Changing Voltage in the Connecting Your System section on page 6). If the AC
mains voltage is higher than the selected voltage, it is possible that the fuse needs to
be replaced (see Changing Fuses in the Connecting Your System section on page 6).
• The power light is illuminated on the front panel of the monitor or on the back panel
of the subwoofer. Note that with the the new RoKit series (Generation 2) or the VXT
series, the logo illuminates on the front panel to indicate that power is on. If the
power indicator is not on, turn the power switch off and check the A/C mains fuse(s).
NEVER USE A LARGER AMPERAGE FUSE THAN IS SPECIFIED! Turn the power
switch back on. The power light should illuminate.
• Note: If a fuse change was needed (and the AV mains voltage is set correctly)
yet upon powering the unit back up the fuse(s) blow again, the product needs to be
returned to the dealer you purchased it from, or to KRK, for servicing.
• Repeat the steps in the Troubleshooting section above before continuing to the next
steps.
• Check to see if all other audio devices using the same AC outlet are still operating.
• Make sure that:
• The audio source cable is plugged into both the source output and the unit’s
input.
• The System Gain pot is turned up fully clockwise (+6dB).
• The signal source (e.g. mixing console, work station, CD player, etc.) is
turned up to a level that can properly send a signal to the monitors.
• If one of the full range monitors is working then exchange the audio input cable 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 unit is still not responding, it should be returned to the dealer that you purchased
it from, or to KRK, for servicing.
• Turn the unit’s send down or off.
• Repeat the steps in the Troubleshooting sections above before continuing to the
next steps.
• Carefully check to see if the amplifier's back plate is hot! If the unit has been running at
highest power output for an extended period of time, it could be that it has become over
heated and the protection circuitry has shut the system down momentarily. The unit
provides maximum circuitry protection against AC power surges, amplifier overdrive, and
overheating of the amplifiers. Turn the unit off then wait 30 minutes to allow the back
plate to cool down. Turn the power switch back on.
• Increase the volume to check for normal operation.
• If the unit is still not responding, it should be returned to the dealer that you purchased
it from, or to KRK, for servicing.
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