47
CAUSE
AC supply lead is not plugged in.
Loose speaker connections.
Internal protection circuit is functioning.
Interference from starting motor of nearby car.
Interference from thermostat of nearby electrical
appliance.
Antenna input is too weak due to obstructions or
excessive distance from broadcasting station.
Insufficient antenna input.
Preset memory has been erased.
Interference from source such as lightning,
flourescent lights, electric motors or thermostat
of nearby electrical appliance.
TV or microprocessor is being used nearby.
Radio signal is weak or antenna is not properly
connected.
Current time is not set.
The internal microcomputer has been frozen by
an external electric shock (lightning, excessive
static electricity, etc.) or power supply with low
voltage.
Disc is upside down.
Disc is dirty.
Input selector setting is incorrect.
Disc is dirty.
Volume set too high.
Slack tape wrapped around pinch roller.
Erasure prevention tab is broken off.
Head is dirty.
Head is dirty.
Head has become magnetized.
Tape is worn.
Dolby NR switch is set to wrong position.
Head is dirty.
Head is dirty.
Head has become magnetized.
Tape is worn.
Slack tape coming out of cassette shell.
Tape is creased or torn.
Endless tape is being used.
Silent gaps between selections are too short.
Excessively soft passages in middle of
selections.
Conversation etc. is recorded.
Batteries are dead.
Remote control is too far away or is being used
at incorrect angle.
Direct sunlight or lighting (of an inverter type of
flourescent lamp etc.) is striking the remote
control sensor of the main unit.
Remote control is being used near TV set with a
remote control sensor.
SYMPTOM
No power even if the POWER switch is
pressed.
No sound from one speaker
No sound from speakers.
Excessive static in FM broadcasts.
Noise increases during stereo broadcasts.
Stereo broadcasts are noisy and STEREO
indicator blinks on and off.
Cannot select preset stations.
Buzzing or static during AM (LW or MW)
broadcasts.
AM (LW or MW) broadcast sensitivity is poor.
Can’t set timer.
This unit will not operate properly.
Play does not begin even if disc is loaded.
No sound.
Sound stops suddenly (always at same spot).
Tape won’t move during playback or
recording.
Can’t record.
Sound is distorted or fades out.
Poor sound quality.
Stereo balance is poor.
Excessive noise.
Tape travel stops in middle of playback or
recording.
Can’t find the beginning of desired selections
on tape.
Remote control doesn’t work.
TV functions strangely when the remote
control is used.
TROUBLESHOOTING
If your unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your
authorized YAMAHA dealer or service center for help.
Should be service required, the servicer will need all three pieces [RX-S70, CDC-S90, (KXW-S70 or KX-S90)].
REMEDY
Plug in the AC supply lead.
Connect properly.
Unplug the AC supply lead from the wall AC outlet, and then
plug in again.
Position the FM antenna as high and as far away from
nearby roads as possible. Connect using a coaxial cable.
Check antenna connections.
Install a multi-element type FM antenna if possible.
Install an antenna appropriate for the electric field strength of
your area.
Reprogram memory presets.
Problem is difficult to eliminate but can be lessened by
grounding MW/LW (AM) loop antenna.
Move away from TV or microprocessor.
Properly connect MW/LW (AM) loop antenna.
Change orientation of MW/LW (AM) loop antenna.
Install an external MW/LW (AM) antenna.
Set current time.
Unplug the AC supply lead from the wall AC outlet, and then
plug in again after about one minute.
Load disc label side up.
Clean disc.
Select the CD input selector button.
Clean disc.
Lower volume.
Take up slack with a pencil before using.
Replace tape or cover erasure prevention hole with
cellophane tape.
Clean heads.
Clean heads.
Demagnetize heads with head eraser.
Replace tape.
Set to positions matching those used when tape was
recorded.
Clean heads.
Clean heads.
Demagnetize heads with head eraser.
Replace tape.
Take up slack by turning reels with a pencil.
Replace with new tape.
Don’t use endless tapes.
The function for searching the beginning of desired
selections won’t operate unless the silent gaps between
selections are at least four seconds long.
Replace batteries.
Use within 6 m and 60° radius.
Change position of the main unit.
Move TV farther away or cover its remote control sensor.
RECEIVERCD PLAYER
REMOTE CONTROL
TAPE DECK
