Sony SEN-280 - Page 16

Tmbleshooting Guide
The following checks will assist in the correction of most
problems which you may encounter with you set.
Should any problem persist after you have made these
checks, consult your nearest Sony service facility.
Before going through the check list below, first pay attention
to the following fundamental points.
• The power cord must be firmly connected.
• The speaker connection must be firmly made.
• The flat cord and other connecting cords must be firmly
connected.
Radio Program Reception
The STEREO indicator flickers.
• Adjust the antenna.
Severe hum or noise
• The signal strength is too weak. Connect the external antenna.
• Adjust the antenna.
• Connect the ground wire.
Cassette Deck Operation
The • button does not activate.
• No cassette in the cassette holder.
• The tab is removed from the cassette.
The • button or ^ button cannot be
activated.
• The tape is wound completely.
Tape does not run even when the ► button
is depressed.
• The II button is depressed.
• The cassette holder is not properly closed.
Noises increase while recording and
playback.
There is a decrease in sound level.
• Dirty heads.
• Magnetic built-up on the heads.
Excessive wow or flutter, or sound drop-out.
• Contamination of the capstan or pinch roller.
Insufficient erasure
• Dirty erase head.
Unbalanced tone in higher frequencies
• The DOLBY NR switch is set incorrectly. During playback, set the switch
to the same position as that used when the tape was recorded.
• Set the TAPE type selectors to the appropriate position.
Turntable Operation
Impaired tone quality
• Dusty stylus.
• Worn stylus.
No audio from one channel
• Loose connection of phono cord.
Groove skipping/tonearm skating/tonearm
•Turntable is not level.
not advancing
• Defective record.
Loud rumble or low-frequency howl
•The turntable is subjected to external vibration.
• The turntable is placed too near the speaker.
General
No audio
• Turn the VOLUME control clockwise.
• Check the SPEAKERS select buttons setting.
• Check the MUTING switch setting.
No audio from one channel or unbalanced
left and.right volume
• Adjust the BALANCE control.
• Check the speaker connections of the inoperative channel.
Reversed left and right sound
• Check the speaker cord connection and speaker location.
Lack of bass sound or apparently imprecise
physical location or musical instruments
• Check the © © speaker cord connection for proper phasing.
Sony Corporation
Printed in Japan