Sherwood RD-7503 manual Troubleshooting Guide, Problem Possible Cause Remedy

RD-7503(A)2008.11.41:45PM페이지62

ENGLISH

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.

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.
	• The HDMI AUDIO OUT is set to ON.	• Set it to OFF. (For details, refer to "When
		selecting the HDMI AUDIO OUT" on page 42.)
	• The settings related to audio are set incorrectly.	• Set the settings correctly. (For details, refer to
		"SETTING THE INPUT SETUP" on page 45.)
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 "NO".	• 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.	• Select the desired center speaker setting.
	• Center speaker setting is "NO".
	• Master volume and center level are too low.	• Adjust master volume and center level.
No sound from the surround back	• The input signal format or the current surround	• Under the proper situations, perform the 7.1(or
speakers	mode cannot support the 7.1(or 6.1) surround.	6.1) surround playback.(For details, refer to
		"ENJOYING SURROUND SOUND" on page 25.)
	• The surround back channels' power amplifier is	• Assign the power amplifier to the surround back
	assigned to "BI-AMP" or "ROOM 2".	channels.(For details, refer to "When selecting
		the AMP ASSIGN"on page 41.)
	• Master volume and surround back level are too low.	• Adjust master volume and surround back level.
	• Surround back speaker setting is "NO".	• Select the desired surround back speaker setting.
No picture	• Video connections between this unit and the	• Make proper video connections.
	monitor TV are not made correctly.	• Select the input source correctly.
	• Incorrect selection of input source on the monitor
	TV.	• Set the settings correctly. (For details, refer to
	• The settings related to video are set incorrectly.
		"SETTING THE INPUT SETUP" on page 45.)
No picture with an HDMI	• HDMI connection between this unit and the	• Make proper HDMI connection.
connection	monitor TV are not made correctly.	• This unit will not output video signal unless the
	• The monitor TV or other equipments do not
	support HDCP.	connected equipments supports HDCP.
Noise or distorted picture	• Video format of your monitor TV, DVD player, etc.	• Change the video format to NTSC.
	is different from NTSC.
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.
	• Weak signals.	• Install an outdoor FM antenna.
Continuous or intermittent hissing	• Noise is caused by motors, fluorescent lamps or	• Keep the receiver away from noise sources.
noise during AM reception,	lightning, etc.	• Install an outdoor AM antenna.
especially at night.
Remote control unit does not	• Batteries are not loaded or exhausted.	• Replace the batteries.
operate.	• The remote sensor is obstructed.	• Remove the obstacle.
OSD function is not available.	• Video connections between this unit and the	• Make proper (composite) video connections.
	monitor TV are not made correctly.

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