Bose FreeSpace E-4 Owner's Manual - Page 11

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8.4 Common problems

8.4.1 Communications port error

When you receive the communications port error dialog, the

FreeSpace

Installer™ software was not able to locate an E4

system on the COM 1 port.

This normally occurs due to one of three reasons:

• The PC and E4 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 E4 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.

8.0 E4 System Troubleshooting

68 of 80

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?

Yes

Is AMP OUTPUT

indicator red?

Are the

AMP OUTPUTS

indicators green?

Yes

Contact Bose

Customer Service.

• Make sure that the audio sources

are connected to the E4 LINE in-

puts and that there is an input sig-

nal from the source.

• Using the Installer™ software,

check that the input gain is raised.

• Make sure the source is on.

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 speakers are function-

ing 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.