Bose FREESPACE 4400 - Manual (Page 61)

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8.0 FreeSpace ® 4400 System Troubleshooting
8.4 Common problems
8.4.1 Communications port error
When you receive the communications port error dialog, the
FreeSpace
® 4400 Installer™ software was not able to locate a
FreeSpace 4400 system on the COM 1 port.
This normally occurs due to one of three reasons:
• The PC and FreeSpace 4400 are not connected via a “straight-
wired” serial cable.
• Another software application has control of the serial port.
Applications such as the Palm OS, or other audio applications
control the serial port while they are open. Close these applica-
tions and click the Try Again button.
• The FreeSpace 4400 is connected to another communications
port. If this is the case you should select the appropriate COM
port and click the Try Again button.
Programmer’s Note: Before dismissing the “Choose
COM port” dialog, select the COM 2 port and click Try
Again. Not doing this will cause the COM 1 port to be
locked. If the port locks, you must restart your computer.
8.4.2 No audio in zone
If the system is powered on and operational, but there is no
sound, check the following:
• Do the front panel LEDs indicate normal operation?
• Is the source operating?
• Is routing correct?
• Is output gain correct?
• Is the output gain muted?
• Is cabling correct?
No audio in zone.
Are the AUDIO
SOURCES indicators
green?
• Make sure that the audio sources
are connected to the FreeSpace
4400 LINE inputs and that there is
an input signal from the source.
• Using the FreeSpace 4400
Installer™ software, check that
the input gain is raised.
• Make sure the source is on.
No
Yes
The amplifier is in “protect” mode.
Disconnect the load and see if the
output indicator changes to green.
If so:
• Check for a short in the output
line,
• Make sure no small strands of
wire are touching other wires,
• Make sure loudspeakers are func-
tioning correctly, or
• Using a voltmeter, check for a
voltage drop in the power line
when amplifier is being driven ex-
cessively hard.
See amplifier fault troubleshooting
section for course of action.
Is AMP OUTPUT
indicator red?
Are the
AMP OUTPUTS
indicators green?
Contact your local
Bose representative or
visit pro.Bose.com
Yes
No
No
Yes