Yamaha EM-202VCD - Manual (Page 49)

E-41
English
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.
CAUSE
AC supply lead is not plugged in.
There is an influence of strong external noise
(lightning, excessive static electricity, etc.) or a
misoperation on this unit while using this unit.
Loose speaker connections.
Internal protection circuit is functioning.
One rear speaker connection is loose or bad.
The sound output level to the rear speakers is
set to minimum.
No sound field program is selected.
The sound output level to the center speaker is
set to minimum.
The center channel mode is in PHANTOM
mode.
Incorrect sound field program selection.
No sound field program is selected.
Incorrect cord connections.
Input source selection is not proper.
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.
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.
A nonstandardized disc is played back.
Disc is upside down.
Disc is dirty.
Setting of the INPUT SELECTOR.
Disc is dirty.
Volume is set too high.
Setting of the TV MODE switch on the rear panel
is improper.
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.
It happens that this unit does not work
normally.
No sound from one speaker
No sound from speakers.
No sound from the rear speakers.
No sound from the center speaker.
No sound (or no picture) from an external
unit connected with this unit.
Can’t set timer.
This unit will not operate properly.
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 broadcasts.
AM broadcast sensitivity is poor.
A disc cannot be played back normally, or
there is a noise during playback.
Playback will not begin even if disc is loaded.
No sound (or no picture).
Sound stops suddenly (always at same spot).
A picture is disturbed or unstable.
Remote control doesn’t work.
TV functions strangely when the remote
control is used.
REMEDY
Plug into the AC supply lead.
Turn this unit in the standby mode and disconnect the AC
power cord from the AC outlet. After about 30 seconds have
passed, connect the power and operate this unit again.
Connect properly.
Unplug the AC supply lead from the wall AC outlet, and then
plug in again.
Connect it properly.
Raise the sound output level to the rear speakers.
Select the appropriate program.
Raise the sound output level to the center speaker.
Select NORMAL mode.
Select the appropriate program.
Connect the cords properly. If the problem persists, the
cords may be defective.
Make a proper input source selection.
Set current time.
Unplug the AC supply lead from the wall AC outlet, and then
plug in again after about one minute.
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 AM loop antenna.
Move away from TV or microprocessor.
Properly connect AM loop antenna.
Change orientation of AM loop antenna.
Install an external AM antenna.
Play back another disc.
Load disc label side up.
Clean disc.
Select the CD player by turning the INPUT SELECTOR.
Clean disc.
Lower volume.
Set the TV MODE switch to another proper position.
Replace batteries.
Use within 6 m and 60° radius.
Change position of the main unit.
Relocate this unit away from the TV or cover TV’s remote
control sensor.
THE SYSTEM
VIDEO CD PLAYER
REMOTE CONTROL