Bose FREESPACE 4400, Service Manual

Page: 68 / 107

68
TROUBLESHOOTING
This section provides troubleshooting guide-
lines to use for solving problems you may
encounter servicing FreeSpace
® 4400
systems.
♦
FreeSpace 4400 hardware indicators
•
Normal operation
These are the indications of normal opera-
tion.
♦
System fault
A red SYSTEM STATUS LED indicates that
the FreeSpace 4400 received an error from
one of its many internal components. A red
SYSTEM STATUS LED after AC power is
switched on may be caused by:
• A Power-On Self-Test failure
• A DSP error
• The DSP is offline
OUTPUTS
1 2 3 4
SYSTEM
STATUS
1 2 3 4
INPUTS
DIRECT
INPUT
STANDBY
STANDBY
Unlit
SYSTEM STATUS 
Green
AMP OUTPUTS
Unlit or Green
AUDIO SOURCES 
Unlit, Amber, or Green
DIRECT INPUT 
Unlit
System logged an error – Check
the FreeSpace 4400
Installer™
software Error Log.
OUTPUTS
1 2 3 4
SYSTEM
STATUS
1 2 3 4
INPUTS
DIRECT
INPUT
STANDBY
SYSTEM STATUS
Indicator is red
Have you cycled
the FreeSpace 4400 in
and out of
STANDBY?
Switch the FreeSpace 4400 system
to STANDBY and then back to ac-
tive again. If the SYSTEM STATUS
is green, the system may have
logged an error. Check the
FreeSpace 4400
Installer ™ soft-
ware Error Log.
No
Yes
1. Switch the FreeSpace 4400 sys-
tem to STANDBY.
2. Set the POWER switch to OFF.
3. Wait for STANDBY indicator to
turn off.
4. Set the POWER switch to ON.
5. Press the STANDBY switch.
1. Switch the FreeSpace 4400 sys-
tem to STANDBY.
2. Set the POWER switch to OFF.
3. Disconnect all input/output sig-
nal cables.
4. Set the POWER switch to ON.
5. Press the STANDBY switch.
6. Reconnect one cable at a time
and check the Error Log.
Have you
cycled the FreeSpace
4400 power
on and off?
Have you
disconnected all
input/output
cables?
Yes
No
No
Yes
Troubleshoot and
repair unit.
To determine the severity of the error, cycle
the unit’s power off and back on again. If the
SYSTEM STATUS indicator is now off, the
system has logged an error, but is still
operational.
When you check the error log using the
FreeSpace
® 4400 Installer™ software you
can identify the cause of the error, and
determine an appropriate solution.