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English User Guide Page 39
pro.Bose.com User Guide
Troubleshooting
Problem Possible Solution
No power
• Turn on power switch. Clip, Limit, and Signal LEDs should stay lit for approximately the first 15 seconds, after which
the amplifier should be fully ready for operation. The amplifier’s LCD screen will show the firmware version screen after
about 10 seconds, then revert to the operating screen.
• Check power cable, ensure retaining clip is in place.
• Check mains circuit.
Power is on, but no sound Check the LCD screen for output meter activity. If no signal activity, check the following:
• Check the Input Meter screen for presence of signal. If no signal, fix source or cabling.
• Ensure that input and output signals are not muted.
• Check that Input Routing is configured properly.
• Check that Input Source is set to appropriate signal type (analog or digital).
• Check that Output Attenuate is not set too low.
• Make sure loudspeakers are wired correctly to output connectors.
• Check that Output Configuration is set correctly.
• Check that Standby Mode is not active.
Power is on, sound is low
• Verify source level by monitoring Input Meter. Check that Input Routing and Input Sensitivity are set for optimal gain.
• Check that Output Attenuate is not set too low.
• Make sure loudspeakers are wired correctly to output connectors.
• Check that Output Configuration is set correctly.
• Check that Limiting parameters are set properly.
Unnatural sound Check that all DSP functions (EQs, Limiter, Band Pass, Delay) are set appropriately.
Front panel is locked out, combination is lost Use ControlSpace
®
Designer™ software to connect to the amplifier and unlock the front panel.
Fault LED is lit Refer to Figure 21, “Fault Conditions” on page 38 for alarm conditions and potential solutions. Call your local Bose support
contact for assistance with unlisted or unsolvable faults.
USB is connected to PC but not found by
ControlSpace Designer software
• Unplug/replug USB connector.
• Reinstall USB driver.
• Restart PC, try again.
• Try another USB port on the computer.
• Try another USB cable.
• Check ControlSpace Designer software documentation for more details.
Ethernet is connected to network but amplifier
is not found by ControlSpace Designer software
(PM8500N Only)
• Check the IP address of the PM8500N.
• Ensure that there is not another device with the same address on the network.
• Ensure ControlSpace Designer is connected to the same subnet as the PM8500N.
• Try another CAT5/6 cable.