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953.148UK User Manual
Troubleshooting
No power LED on control panel
Ensure IEC lead is in good condition and connected properly
Ensure POWER switch is on and check mains inlet fuse
Power LED is on but no other LEDs
and no output
Check input signals and condition of input connection leads
Check MASTER, INPUT 1/2 & AUX 1/2 volume controls are turned up
Power light and output LEDs
lighting but no output
Check speaker output terminals are connected correctly
Check speakers are working (test on another amp if available)
No mp3 playback from USB or SD
Check memory device is connected properly (remove and re-insert)
Check file types – standard mp3 digital audio files required
Check memory device works on a PC or Mac for standard playback
Bluetooth cannot connect
Ensure that Bluetooth is enabled on sending device
Ensure that the sending device is within Bluetooth range (5-10m)
Check that “Bluetooth” is the connected device
If there are more than one “Bluetooth” devices, check each in turn
No audio from Bluetooth device
Ensure that volume controls are not turned down on sending device
Check volume and Play/Pause and Mute buttons on media player
Output too loud or distorted
Reduce INPUT, AUX, MEDIA and/or MASTER volume controls
Ensure MIC or PHANTOM are not selected for line level inputs
Output too quiet or inaudible
Increase INPUT, AUX, MEDIA and/or MASTER volume controls
Check for quiet recording of media files on USB
Ensure LINE is not selected for microphone inputs
No microphone output
Check phantom power is enabled if using a condenser microphone
Feedback from microphone
Face microphone away from speakers and monitors and reduce level
Amplifier overheating
Ensure cooling vents are clear from debris and dust
Ensure 4/8/16Ω speakers are not connected to 100V or 70V terminals
Ensure total 100V speaker wattage is lower than amplifier rating
Ensure that 100V and 4, 8 or 16Ω speakers are not both connected
Ensure that total load connected to 4 - 16Ω output is not less than 4Ω
Disposal: The “Crossed Wheelie Bin” symbol on the product means that the product is classed as Electrical or
Electronic equipment and should not be disposed with other household or commercial waste
at the end of its useful life. The goods must be disposed of according to your local council guidelines.
Hereby, AVSL Group Ltd. declares that the radio equipment type 953.148UK is in compliance with Directive 2014/53/EU
The full text of the EU declaration of conformity is available at the following internet address:
http://www.avsl.com/assets/exportdoc/9/5/953148UK%20CE.pdf
Errors and omissions excepted. Copyright© 2021.
AVSL Group Ltd. Unit 2-4 Bridgewater Park, Taylor Rd. Manchester. M41 7JQ
AVSL (EUROPE) Ltd, Unit 3D North Point House, North Point Business Park, New Mallow Road, Cork, Ireland.