Page 2
Framingham, MA 01701-9168 SIZE
A FSCM
32108 CLASS
FM DWG NO.
294963-TT SHEET
3 of 5
REV.
00
Product Symptom Check Action
FreeSpace ®
4400
amplifier System STATUS
LED is lit red Error log and
system wiring 1. Switch the system to STANDBY and then back to
active again. If the SYSTEM STATUS LED is green,
the system may have logged an error. Check the
error log on the unit using the FS 4400 Installer
software.
2. Switch the system to STANDBY. Set the power
switch on the rear panel to OFF. Wait for the
STANDBY indicator to turn off. Set the power switch
to ON. Press the STANDBY switch and check to
see if the SYSTEM STATUS LED is now green.
3. Switch the system to STANDBY. Set the power
switch on the rear panel to OFF. Disconnect all
input and output signal cables. Set the power switch
to ON. Press the STANDBY switch. Reconnect one
cable at a time and check the SYSTEM STATUS
LED and the error log to see if there are errors.
FreeSpace
4400
amplifier System STATUS
LED is lit red Error log for
power-on self
test failure The power-on self test (POST) checks five major
hardware components. Connect to the system using
the FreeSpace Installer software to view the error
log messages. The failures types are below.
1. Host controller -“ will cause the message Power-
on self test incomplete to appear in the host
controller test section of the error log. This is usually
caused by a SRAM address failure.
2. Flash memory -“ Contains the system
configuration, design file and the system event
schedule. Error log will have an entry Power-on
self test incomplete in the host controller flash test
section.
3. Peripheral controller -“ This monitors contact
closures, rear panel connections and user interface
connections. Error log will have an entry Power-on
self test incomplete in the peripheral controller
flash test section of the error log. Check the user
interface wiring for shorts or a failed keypad.
4. DSP -“ The DSP performs all signal processing
and routing functions. Error log will have an entry
Power-on self test incomplete in the DSP test
section of the error log.
5. Upper and lower amplifier -“ Amplifier channels 1
and 2 are located on the upper amplifier board.
Channels 3 and 4 are located on the lower amplifier
board. The upper and lower amplifier test
determines if the amplifiers are working properly.
Error log will have an entry Power-on self test
incomplete in the upper or lower amplifier test
section of the error log.
