Parasound 2250 manual Problems and Remedies, No sound

Page 12

10PROBLEMS AND REMEDIES

No sound

-Check that AC is live.

-Is the unit on? Check the setting of the Auto Turn On switch.

-Doesn’t turn on with the Auto Turn On - Audio. Try the 12V trigger instead.

-Check that input cables and speaker wires are secure at both ends.

-Make sure the control preamp/receiver is switched to the correct input.

-If using Auto turn on, increase the sensitivity of the audio trigger.

-Is the Hi-Temp or Protect (or both) illuminated? Check for excessive temperature, short circuited speaker wires, low impedance speaker load, and inadequate ventilation to remove heat.

Background Hum

-Move the Ground switch to Lift.

-Move audio cables and AC cords away from each other.

-Try different routes for the audio cables and AC cords.

-Make sure insulating shoulder washers are used if unit is rack mounted.

-Try reversing the direction of each other component’s AC plug, one by one.

Overheating

-Remove any external sources of heat.

-Increase ventilation around the Model 2250.

-Reset the Load Impedance switch to 2-3 Ohms.

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Contents Model Important Safety Instructions Table of Contents Introduction Unpacking115v 230v AC Voltage Selector Switch Installation and Ventilation RequirementsRack Mounting Connection Precautions Rear Panel Connections and ControlsJacks Loop JacksHigh Pass Filter Switch Speaker ConnectionsBridging Switch Stereo Mono Load Impedance SwitchCorrect Speaker Polarity is Important Mono OperationAuto Turn On Switch Automatic Turn On and OffGround Switch AC Power Connections and AC GroundingFront Panel Buttons and Display Problems and Remedies No soundBefore You Return Any Unit to Parasound for Service If YOU Require AssistanceParasound Model 2250 Specifications Connection and Setup Notes Rev
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