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

Page 54

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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Contents RD-7502 Safety Instructions Read this Before Operating Your Unit For Your SafetyIntroduction FCC InformationContents Connecting Antennas System ConnectionsConnecting Video Components HDMIHigh Definition Multimedia Interface connectionConnecting Audio Components Connecting External INS Connecting Digital INS and OUTDigital input default settings Connecting XM only for North America Connecting Subwoofer PRE OUTConnecting DIGI-LINK Connecting SpeakersSwitched AC Outlets AC Input CordFront Panel Controls Fluorescent DisplayRemote Sensor Setup MIC Jack AUX in JackVideo 3 in Jacks Remote Controls Display buttonRemote Control Operation Range Loading BatteriesWhen selecting the External in as desired OperationsBefore operation When CD, AUX, Video 1~2 is selected as an input source Reproduced through the headphonesTone mode is displayed for several seconds Adjusting the tone bass and trebleEnter the tone mode Sources are input or the External in is selected canSurround Sound Dolby Virtual Speaker Dolby Pro Logic IIx surroundDolby Pro Logic II surround Dolby Pro LogicSelect the desired surround mode Enjoying Surround SoundTo cancel the surround mode for stereo operation 2CH downmix modeSP When using 2 front and center speakers Pressed, the parameter mode changes as followsControl can be set it 8 steps from 0 to 7 default value Dolby Pro Logic II/Dolby Pro Logic IIx Music ParametersDolby Headphone Parameters Adjusting each channel level with test toneEnter the test tone mode SB orAdjusting the current channel level BL BRMemorizing the adjusted channel levels Recalling the memorized channel levels1 of REF 1 indication flickers for several seconds Auto presetting Auto tuningManual tuning Listening to Radio BroadcastsTuning to preset stations Manual presettingMemory Backup Function Scanning preset stations in sequenceXM Satellite Radio only for North America Signing up for XM Satellite RadioSelect XM Category search Channel searchDirect search For 27 2Signal strength display mode Presetting channelsPreset search Error message and statusRecording with Tape Dubbing the audio and video signals separately onto VideoRecording Dubbing from video components onto VideoDigital Audio Recording with MD Recorder Start recording on the component connected toOptical Digital OUT Other Functions Operating the sleep timerAdjusting the brightness of the fluorescent displays Displaying the operation statusSystem Setup Navigating through the setup menuDown System Setup menu flowSetup menu flow is as follows Input SPK SETCH Level Paramtr ExitSetting the System When selecting the AMP AssignWhen selecting the Subwoofer mode When selecting the Tone When selecting the Cinema EQPress the Cursor Left /RIGHT Setting the Input When selecting the DigitalInput When selecting the Remaster When selecting the Video ModeWhen selecting the Auto Surround When selecting the AV SyncSetting the Speaker Setup When selecting the Auto SetupAbout the first listening position PreparationsWhen performing the auto setup When the auto setup has been completedWhen selecting the Speaker Configuration When setting the speaker size by performing the auto setupSpeaker types When setting the distance When selecting the Speaker DistanceWhen selecting the desired unit About the speaker sizeButtons to select the desired speaker When selecting the Speaker CrossoverAbout the crossover frequency 40 ~ 200 Hz in 10 Hz intervalsOFF When turning off the room EQ mode On When turning it onSetting the CH Level CH LevelUP /DOWN RightSetting the Sound Parameter Lower compression Higher compressionWhen selecting the Dolby Plii Music When selecting the Pano Panorama modeWhen selecting the C. Width Center width control When selecting the Dolby Headphone Each time the Cursor UP / Down buttons are pressedDH 1 Dolby Headphone 1, DH 2 or DH 3 is selected Reference mode When selecting the Dolby Virtual SpeakerWhen selecting the REF Dolby Virtual Speaker When selecting the Wide Dolby Virtual SpeakerTroubleshooting Guide Problem Possible Cause RemedySpecifications RD-7502
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