Onkyo TX-SV535 - Schematic Diagram: Part 5

Trouble shooting guide
NOTE: __
If a problem occurs while you are using the remote control first
operate the unit using the front panel controls to confirm that it
is not due to a malfunction (or worn out batteries) of the remote
control.
Trouble
Cause
Remedy
No power.
• Power cord is disconnected.
• There is external noise in the computer
circuits of the TX-SV535.
• AC fuse blown.
• Connect power cord.
• Turn the power button off and then on again or
remove the AC plug from the outlet and then plug it
again.
• Contact your ONKYO service center.
Power but no sound.
• Tape-2 monitor switch on.
• Audio muting switch on.
• Bad connections.
• Amplifier protection circuitry has been
activated. {‘PROTECT’ will be displayed.)
• Switch to off.
• Switch to off by remote control transmitter
• Check connections, speaker leads, etc.
• Contact your ONKYO service center.
Hum, low-frequency noise.
• Poor or no input ground.
• Poor or no phono motor ground.
• The placement of the audio connection
cable on the rear panel is not correct.
• Check outer conductor of input plugs.
• Check for proper ground connection.
• Adjust the placement of the cables to reduce hum.
Howling when the volume is turned up.
• Turntable and speakers are too close
together.
• Move them farther apart.
Rough or scratchy sound. High range is
not clear.
• Stylus of pick-up is worn.
• Stylus tip is dirty.
• Treble control too high.
• Replace.
• Clean.
• Turn treble control down.
AM stations cannot be received.
• AM loop antenna is not attached.
• Connect the included AM loop antenna to the AM
antenna terminals.
Buzzing noise on AM (particularly con¬
spicuous at night or with weak stations).
• Noise from electrical apparatus such as
fluorescent lamp.
• Move AM loop antenna to different position.
• Set up outdoor AM antenna.
High-pitched noise or buzzing noise on
AM.
• Noise from TV set.
• Place the AM loop antenna as far as possible from
the TV.
• Move unit away from TV set.
Crackling noise on AM, FM.
• Noise caused by turning fluorescent
lamp on and off.
• Noise from automobile ignition.
• Move antenna as far as possible from the fluores¬
cent lamp.
• Install an FM outdoor antenna as far as possible
from the road.
• Change the position or direction of the outdoor
antenna.
FM tuned and stereo indicators light but
sound is distorted and stereo separation
is bad.
• Station is too strong.
• Multiple reflection of the radio waves
because of tall buildings or mountains.
• Change to T-shaped antenna.
• Use antenna which has better directivity and select
a point where the distortion is least.
FM tuned indicator and stereo indicator
flicker and hiss is heard on FM.
• Station is too weak.
• Stereo FM broadcasts cover only about
half the distance of an ordinary broad¬
cast.
• Install an outdoor FM antenna.
• Change the position or direction of the outdoor
antenna.
No station is recalled when a preset key is
pressed.
• The power cord has been unplugged for
a long time.
• The memory contents are lost. Store all stations
again.
The multiple room remote system does
not operate.
• Connection is wrong.
• The MR OFF button on the TX-SV535
is engaged. (The MR OFF indicator will
light.)
• Check the connection again.
• Press the MR OFF button. (The MR OFF indicator
will be turned OFF.)
Front panel controls function but remote
control transmitter does not.
• No batteries in remote control transmit¬
ter.
• Batteries have worn out.
• Insert batteries.
• Replace batteries.
Also refer to the respective instruction manuals of the video disc player, video cassette recorder, TV monitor, etc., being used.
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