Bose FREESPACE 4400 User Manual

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The FreeSpace 4400 system Error Log is displayed when the 
FreeSpace 4400 Installer™ software is in the Service Hardware 
mode.

The Error Log displays FreeSpace 4400 system hardware version 
numbers and records all alarms and their causes as shown in the 
following example.

The FreeSpace 4400 system hardware version numbers appear 
at the top of the Error Log listing. These are the version numbers 
of the software installed in the FreeSpace 4400 hardware at the 
time of manufacture. These version numbers do not pertain to the 
FreeSpace 4400 Installer™ software installed on your PC.

The power-on-self test (POST) results are only displayed when an 
error has occurred. The POST test checks the basic operation of 
the FreeSpace 4400 hardware to determine if it is capable of 
properly performing audio processing and amplification. During 
the POST test, five major components of the hardware are 
tested.

• Host controller – The host controller monitors and controls the 

operation of the FreeSpace 4400 hardware. A host controller 
failure will cause the message, “Power-on self-test incomplete” 
to appear in the host controller test section. The failure type for 
a host controller is an SRAM address failure. If this occurs, 
contact your local Bose representative or visit pro.Bose.com.

• Flash memory test – The flash memory contains the configu-

ration, design file, and system event schedule. A flash failure 
will cause the message, “Power-on sel-test incomplete” to 
appear in the host controller flash test section. If this occurs, 
contact your local Bose representative or visit pro.Bose.com.

• Peripheral controller – The peripheral controller monitors con-

tact closures, front panel connections and user interface con-
nections for incoming event messages. Any failures in these 
areas will cause the message, “Power-on self-test incomplete” 
to appear in the peripheral controller flash test section. If a 12C, 
or code failure occurs, contact your local Bose representative or 
visit pro.Bose.com. If a user interface failure occurs, check the 
user interface wiring for shorts.

• DSP test – The DSP performs all signal processing and routing 

functions. If a DSP error occurs, contact your local Bose repre-
sentative or visit pro.Bose.com.

• Upper and lower amplifier test – The upper and lower ampli-

fier test determines if the amplifiers are operating properly. An 
amplifier failure will cause the message, “Power-on self-test 
incomplete” to appear in the upper or lower amplifier section of 
the POST test results. If a 12C, or code failure occurs, contact 
your local Bose representative or visit pro.Bose.com. Additional 
details on the exact cause of an amplifier failure can be found 
in the amplifier section of the Error Log.

Bose

®

 FreeSpace 4400 Error Log

-------------------------------------------------
Microcontroller: v3.0.0.18
DSP: v2.0.1.0
Peripheral: v1.0.0.10
Lower Amplifier: v1.1.8.5
Upper Amplifier: v1.1.8.5
-------------------------------------------------
power-on self-test alarm (ok)
2002/12/31 23:59
host controller test:

[OK]

host controller flash test:

[OK]

peripheral controller test:
DSP test: 1
upper amplifier test:

[OK]