Troubleshooting - Bose ControlSpace ESP-88 Service Manual

Symptom
No Power
Power is on, but no
sound
Power is on, but
sound is low
Sound is distorted
Unnatural sound
Status LED is off
Ethernet LED is off
Ethernet LED is on,
but cannot
communicate with
the ESP-88

TROUBLESHOOTING

Possible Solution
•
Turn power on, plug in power cord.
•
Verify that there is an input signal from the source. The audio input
indicator should be green (or yellow).
•
Verify that there is an output signal. The audio output signal indicator
should be green (or yellow).
•
If there is an input signal (indicator green) and no output signal
(indicators off), the ESP-88 may be muted, output levels may be down,
or the unit may be completely un-programmed. Run ControlSpace
Designer software and connect to the ESP-88 and verify. Signals
should be passing from inputs to outputs.
•
Verify that the audio input indicator is green. If it is off, increase the
source output or use the Designer software to increase the input gain.
•
If the audio input indicator is green and the audio output signal indicator
is green, verify there is enough gain on the amplifier.
•
Verify that the audio input signal indicators are not solid red or flashing
red. If they are, reduce the source output level or use the Designer
software to reduce the input gain.
•
Verify that the audio output signal indicators are not solid red or flashing
red. If they are, and the input indicators are green, use the Designer
software to reduce the output gain or any intermediary gain in the signal
path.
•
If the input source signal is clean when it enters the ESP system, and
the input and output indicators are green, verify that the loudspeakers
are not being overdriven and are not damaged.
•
Verify that the correct EQ and/or crossover is used in the signal path.
•
Power is off or netlist is not loaded. Use ControlSpace Designer
software to load a netlist/configuration.
•
Verify that the ESP LAN port is connected to a PC with a crossover
cable.
•
Verify that the Ethernet LAN connection on the PC is enabled. If it is not
enabled, the link LED on the PC will probably be off.
•
If connected to a hub or switch, check that device's Link LED.
•
If connected to a hub or switch, verify that the ESP and PC are
connected with straight-through cables to the hub or switch.
•
Verify that the LAN settings on the Ethernet device you are using on the
PC are set correctly:
−
Internet Protocol (PCP/IP) is installed as a protocol on this device
−
IP address is set to 192.168.0.1
−
Subnet mask is set to 255.255.255.0
•
Verify that there is not another LAN connection enabled.
•
Verify there is not another ESP connected with the same address. If
unsure, disconnect one, scan for the remaining unit, and change its
address. Repeat with the second unit.
107
TM