Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
SMART Classroom Audio CAS340
Troubleshooting Diagram
Revision History
Contact Support
SMART
Classroom Audio
System
Buzzing /
Feedback sound
when using Mic
Unable to Control
AUX Input Volume
using Microphone
Microphone not
holding charge
Microphone is not
audible enough
No sound from
speaker # 3 & 4
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
1. Buzzing / Feedback sound when
using Mic
Contact Support
Back
Home
Buzzing / Feedback
Sound When using Mic
Confirm that buzzing
happens only when
using the Mic
Does this happen only
when USB Cable is
present between the
Computer and Control
Unit?
Yes
Disconnect USB cable
from the computer.
Yes
Computer / Laptop could be causing grounding
issues, swap the computer power cable or connect
the power to a different power outlet.
Is the issue resolved?
No
Yes
Turn OFF all other
electronic devices.
Is there any electronic
device (eg: Plasma TV)
present in the room?
No
No
Is the issue resolved?
No
Swap Microphone from
a known working unit.
Is the issue resolved?
No
Browse the SMART Parts Store to see if any
Expansion Infrared Sensors (Part Number CAS300-IRSENS) are available
Issue Resolved
This unit is likely
defective. Consider
upgrade/replacement
options.
Yes
Browse the SMART Parts Store to see if any
Microphones (Part Number CAS-300-IRMIC) are
available
Issue Resolved
Issue Resolved
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
2. Unable to Control AUX Input
Volume using Microphone
Contact Support
Back
Home
Unable to Control AUX Input
Volume using Microphone
Check the Firmware and update
it if a new update exists.
Follow this link to do so.
Yes
Issue Resolved
Yes
Issue Resolved
Is the Issue Resolved?
No
Download and install the
SMART Audio Configuration
Software from our website
(link attached)
No
Check the Settings.
Is the Issue resolved?
No
This unit is likely
defective. Consider
upgrade/replacement
options.
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
2.1. Updating CAS Firmware
Contact Support
Back
Home
Updating CAS Firmware
1. Go to the link on this step
and download the firmware
listed there
2. Install this Firmware
Updater downloaded from the
previous step
3. Connect your computer to
the control unit via USB Cable
4. Turn ON the Control Unit
5. Open Windows Explorer
(right click on Start button and
select Explore)
6. In Windows Explorer
BROWSE C Drive  Program
Files  SMART Technologies
 SMART Audio Firmware
Update
7. Launch the SMART Audio
Firmware Update Application
that is there
8. Follow the on-screen
directions (it will show the
current version at the bottom,
click Update Firmware if an
update is available)
Return to the previous
Troubleshooting Diagram
Important: The Control Unit
must be connected to the
room module (via CAT5
Cable) as indicated in the
installation guide
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
2.2. Check the Settings
Back
Home
Check the Settings
1. Open the SMART Audio
Configuration Software
2. Open the Volume Tab and
set all levels to Maximum
3. Make sure of the following
Aux Volume Control = on mute
Aux Ducking = none
Soft Button – Short = No Action
Soft Button – Long = Relay
Now make sure Mic-Button
Disable Feature is OFF by
following the link to the next
Troubleshooting Diagram
Contact Support
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
2.2.1. Check the Settings Part II:
Make Sure Mic-Button Disable
Feature is OFF
Revision History
Contact Support
Back
Home
Make sure Mic-Button
Disable Feature is OFF
1. Press “Soft” + “Volume
Down” button on Microphone
to enter programming mode
(LED status-Blinking Amber)
2. Press and hold Mute to turn
this Feature ON or OFF
3. Wait for some time to exit
out of Programming Mode
Click here to back to the
original Troubleshooting
Diagram
Blinking Green  Feature
is ON
Blinking Red  Feature is
OFF
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
3. Microphone Not Holding Charge
Back
Home
Microphone Not Holding
Charge
Charge Microphone for 24
Hours
Is the Issue Resolved?
No
Contact SMART Parts Store to check availability of
part – if the part is not in stock you may want to
contact your Reseller for Replacement Options
Issue Resolved
Yes
Issue Resolved
Contact Support
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
4. Microphones are not Audible
Enough
Contact Support
Back
Home
Microphones are Not
Audible Enough
Check the CAS / Volume
Settings by following this Link.
Yes
Issue Resolved
Yes
Issue Resolved
Is the Issue Resolved?
No
Consider upgrading the
Firmware using the
instructions linked here. Is the
Issue Resolved?
No
This unit is likely
defective. Consider
upgrade/replacement
options.
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
4.1. Check the Settings
Back
Home
Check the Settings
1. Open the SMART Audio
Configuration Software
2. Open the Volume Tab and
set all levels to Maximum
3. Make sure of the following
Aux Volume Control = on mute
Aux Ducking = none
Soft Button – Short = No Action
Soft Button – Long = Relay
Now make sure Mic-Button
Disable Feature is OFF by
following the link to the next
Troubleshooting Diagram
Contact Support
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
4.1.1. Check the Settings Part II:
Make Sure Mic-Button Disable
Feature is OFF
Revision History
Contact Support
Back
Home
Make sure Mic-Button
Disable Feature is OFF
1. Press “Soft” + “Volume
Down” button on Microphone
to enter programming mode
(LED status-Blinking Amber)
2. Press and hold Mute to turn
this Feature ON or OFF
3. Wait for some time to exit
out of Programming Mode
Click here to back to the
original Troubleshooting
Diagram
Blinking Green  Feature
is ON
Blinking Red  Feature is
OFF
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
4.2. Updating CAS Firmware
Contact Support
Back
Home
Updating CAS Firmware
1. Go to the link on this step
and download the firmware
listed there
2. Install this Firmware
Updater downloaded from the
previous step
3. Connect your computer to
the control unit via USB Cable
4. Turn ON the Control Unit
5. Open Windows Explorer
(right click on Start button and
select Explore)
6. In Windows Explorer
BROWSE C Drive  Program
Files  SMART Technologies
 SMART Audio Firmware
Update
7. Launch the SMART Audio
Firmware Update Application
that is there
8. Follow the on-screen
directions (it will show the
current version at the bottom,
click Update Firmware if an
update is available)
Return to the previous
Troubleshooting Diagram
Important: The Control Unit
must be connected to the
room module (via CAT5
Cable) as indicated in the
installation guide
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
5. No sound from speaker 3 or 4
Back
Home
No sound from speaker # 3
&4
Check the Firmware and update
it if a new update exists.
Follow this link to do so.
Is the Issue Resolved?
No
This unit is likely
defective. Consider
upgrade/replacement
options.
Issue Resolved
Contact Support
Title
SMART Classroom Audio CAS340 Troubleshooting Diagram
Revision History
Contact Support
5.1. Updating CAS Firmware
Back
Home
Updating CAS Firmware
1. Go to the link on this step
and download the firmware
listed there
2. Install this Firmware
Updater downloaded from the
previous step
3. Connect your computer to
the control unit via USB Cable
4. Turn ON the Control Unit
5. Open Windows Explorer
(right click on Start button and
select Explore)
6. In Windows Explorer
BROWSE C Drive  Program
Files  SMART Technologies
 SMART Audio Firmware
Update
7. Launch the SMART Audio
Firmware Update Application
that is there
8. Follow the on-screen
directions (it will show the
current version at the bottom,
click Update Firmware if an
update is available)
Return to the previous
Troubleshooting Diagram
Important: The Control Unit
must be connected to the
room module (via CAT5
Cable) as indicated in the
installation guide