Common Problems; Communications Port Error; No Audio In Zone - Bose FREESPACE 4400 Owner's Manual

8.0 FreeSpace

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.
4400 System Troubleshooting
®

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
Is AMP OUTPUT
indicator red?
AMP OUTPUTS
indicators green?
Contact your local
Bose representative or
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58 of 66
• Make sure that the audio sources
are connected to the FreeSpace
4400 LINE inputs and that there is
No
an input signal from the source.
• Using the FreeSpace 4400
green?
Installer™ software, check that
the input gain is raised.
• Make sure the source is on.
Yes
The amplifier is in "protect" mode.
Disconnect the load and see if the
output indicator changes to green.
If so:
Yes
• Check for a short in the output
line,
• Make sure no small strands of
wire are touching other wires,
No
• 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.
Are the
No
See amplifier fault troubleshooting
section for course of action.
Yes