Sherwood RD-7502 manual Troubleshooting Guide, Problem, Possible Cause, Remedy

Models: RD-7502

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Troubleshooting Guide

Troubleshooting Guide

If a fault occurs, run through the table below before taking your receiver for repair.

If the fault persists, attempt to solve it by switching the receiver off and on again. If this fails to resolve the situation, consult your dealer. Under no circumstances should you attempt to repair the receiver yourself. This could void the warranty.

ENGLISH

 

 

 

 

 

 

 

PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

No power

• The AC input cord is disconnected.

• Connect cord securely.

 

 

• Poor connection at AC wall outlet or the outlet is

• Check the outlet using a lamp or another

 

 

dead or off.

appliance.

 

 

 

 

 

No sound

• The speaker wires are disconnected.

• Check the speaker connections.

 

 

• The master volume is adjusted too low.

• Adjust the master volume.

 

 

• The MUTE button is pressed to ON.

• Press the MUTE button to cancel the muting effect.

 

 

• Incorrect selection of input source.

• Select the desired input source correctly.

 

 

• Incorrect connections between the components.

• Make connections correctly.

 

 

 

 

 

No sound from the surround

• Surround mode is switched off(stereo mode).

• Select a surround mode.

 

speakers

• Master volume and surround level are too low.

• Adjust master volume and surround level.

 

 

• Monaural source is used.

• Select a stereo or surround source.

 

 

• Surround speaker setting is "N" (None).

• Select the desired surround speaker setting.

 

 

 

 

 

No sound from the center

• Dolby Virtual Speaker, stereo mode, etc is

• Select the desired surround mode.

 

speaker

selected.

 

 

 

• Center speaker setting is "N" (None).

• Select the desired center speaker setting.

 

 

• Master volume and center level are too low.

• Adjust master volume and center level.

 

 

 

 

 

No sound from the surround

• The input signal format or the current surround

• Under the proper situations, perform the 7.1(or

 

back speakers

mode cannot support the 7.1(or 6.1) surround.

6.1) surround playback.(For details, refer to

 

 

 

"ENJOYING SURROUND SOUND" on page 20.)

 

 

• Master volume and surround back level are too low.

• Adjust master volume and surround back level.

 

 

• Surround back speaker setting is "N" (None).

• Select the desired surround back speaker setting.

 

 

 

 

 

Stations cannot be received

• No antenna is connected.

• Connect an antenna.

 

 

• The desired station frequency is not tuned in.

• Tune in the desired station frequency.

 

 

• Antenna is in wrong position.

• Move antenna and retry tuning.

 

 

 

 

 

Preset stations cannot be

• An incorrect station frequency has been memorized.

• Memorize the correct station frequency.

 

received

• The memorized stations are cleared.

• Memorize the stations again.

 

 

 

 

 

Poor FM reception

• No antenna is connected.

• Connect an antenna.

 

 

• The antenna is not positioned for the best reception.

• Change the position of the antenna.

 

 

 

 

 

Continuous hissing noise during

• Weak signals.

• Change the position of the antenna.

 

FM reception, especially when a

 

• Install an outdoor FM antenna.

 

stereo broadcast is received.

 

 

 

 

 

 

 

Continuous or intermittent

• Noise is caused by motors, fluorescent lamps or

• Keep the receiver away from noise sources.

 

hissing noise during AM

lightning, etc.

 

 

reception, especially at night.

 

• Install an outdoor AM antenna.

 

 

 

 

 

Remote control unit does not

• Batteries are not loaded or exhausted.

• Replace the batteries.

 

operate.

• The remote sensor is obstructed.

• Remove the obstacle.

 

 

 

 

 

Other Sherwood components do

• DIGI LINK connections are not made properly.

• Make proper DIGI LINK connections.

 

not react to remote control

 

 

 

commands.

 

 

 

 

 

 

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Page 54
Image 54
Sherwood RD-7502 manual Troubleshooting Guide, Problem, Possible Cause, Remedy