Specifications

21
Maintaining Your Product
Troubleshooting
If you experience problems while using this product, try the following solutions. If you still
can’t solve the problem, contact your Bose
®
dealer or Bose Customer Service to arrange for
service.
Recommended troubleshooting tools:
•Portable voltmeter
•Cable tester
• XLR and ¼-inch phone plug cables
• 4-wire bass module cable
•Spare T15AH fuses
• Spare AC power cord
Problem What to do
System is plugged in,
power switch is on, but
power LED is off.
• Make sure you have power at the AC outlet. Try operating a lamp or other equipment
from the same AC outlet.
• Make sure the power stand’s power cord plug is fully inserted into the AC outlet.
• Check the line fuse on the power stand.
Power LED is on, but no
sound.
• Make sure volume control is turned up on your instrument.
• Make sure the applicable level control is turned up (Trim , or Channel 3/4 Level on the
power stand; CH 1/2 LEVEL and MASTER level on the remote).
• Make sure your instrument is plugged into the Channel 1/2 Input or Channel 3/4 Input
jack.
• Connect your instrument to the power stand using a different cable.
• Plug your instrument into a different amplifier to make sure the instrument is working.
House circuit breaker
keeps tripping.
• If you have more than one power stand plugged into the same AC circuit, stagger the
turn-on times. Each power stand has an inrush current of 32A when turned on.
• If you have more than three power stands plugged into a single 15 amp circuit, move
some systems to another AC circuit. Each power stand can draw 5 amps or more when
playing at high volumes for long periods of time.
Bass module is plugged in,
but no bass is being heard.
• Make sure you are using the 4-wire bass module cable included with the bass module.
• Make sure that the bass module cable is plugged into the Bass/Amp 3 OUT jack on the
power stand.
• Try a different 4-wire bass module cable.
• If available, try a different bass module.
No mid/high sounds heard
from the line array.
• Make sure line arrays are firmly seated in their connectors.
• Make sure connections are not bent or broken.
• Try cleaning the contacts on the line arrays with electronic contact spray cleaner.
Microphone sounds dis-
torted.
• Make sure the red clip light is not constantly on. If it is, lower the trim.
• Try a different microphone.
• Try your microphone on another power stand.
One of the four instru-
ments plugged into the
power stand is at a lower
volume than the others.
• If the instrument is plugged into channel 3/4, use a direct box or high-to-low trans-
former (high impedance instruments, such as non-active guitars or basses, are not
designed to be plugged directly into a low impedance input).
• If the instrument’s volume is still lower than the others, try a similar instrument in the
same channel. If this solves the problem, your instrument may not be working correctly.