Sony MHC-S90D Operating Instructions Manual page 60

Troubleshooting (continued)
The radio presetting is canceled.
• The power cord is disconnected or a power
failure occurs for longer than half a day. Redo
"Presetting radio stations" (page 42).
There is no sound.
• Turn VOLUME clockwise.
• The headphones are connected.
• Insert only the stripped portion of the speaker
cord into the SPEAKER jack. Inserting the vinyl
portion of the speaker cord will obstruct the
speaker connections.
• The protective device on the amplifier has been
activated because of a short circuit.
("PROTECT" and "PUSH POWER" flash
alternately.) Turn off the power, eliminate the
short-circuit problem and turn on the power
again.
• The system is in pause mode or in Slow-motion
Play mode. Press N SELECT to return to
normal play mode.
• There is no audio output during Timer-recording.
There is no sound when playing a DVD, a VIDEO
CD or a CD.
• Check that the optical cable is connected
correctly and securely (page 11).
The sound loses stereo effect when you play a
VIDEO CD, or a CD.
• Set "AUDIO" to "STEREO" in the Control
Menu (page 34).
• Make sure you connect the system
appropriately.
The surround effect is difficult to hear when you
are playing a Dolby Digital or MPEG audio sound
track.
• Make sure the sound field function is on (page
48).
• Check the speaker connections and settings
(pages 14, 22).
• Depending on the DVD, the output signal may
not be the entire 5.1 channel but monaural or
stereo even if the sound track is recorded in
Dolby Digital or MPEG audio format.
There is severe hum or noise.
• A TV or VCR is placed too close to the unit.
Move the unit away from the TV or VCR.
60
"--:--" lights up in the display.
• A power interruption occurred. Set the clock and
timer settings again.
The timer does not function.
• Set the clock correctly.
• You cannot activate the Daily timer and the
Timer-recording simultaneously.
"DAILY 1", "DAILY 2", or "REC SELECT" does
not appear when you press TIMER SELECT (or
CLOCK/TIMER SELECT on the remote).
• Set the timer correctly.
• Set the clock.
The remote does not function.
• There is an obstacle between the remote and the
unit.
• The remote is not pointing in the direction of the
unit's sensor.
• The batteries have run down. Replace the
batteries.
There is acoustic feedback.
• Decrease the volume level.
• Move the microphone away from the speakers or
change the direction of the microphone.
The color irregularity on a TV screen persists.
• Turn off the TV set once, then turn it on after
15 to 30 minutes. If the color irregularity still
persists, place the speakers farther away from the
TV set.
"PROTECT" and "PUSH POWER" appear
alternately.
• A strong signal is input. Turn off the power,
leave the system turned off for a while, then turn
on the power again. If "PROTECT" and "PUSH
POWER" still appear alternately, check the
speaker cords.
"CANNOT USE" appears in the display when you
try to operate the system while recording.
• You cannot do the operation while recording.
MHC-S90D 4-235-983-13(2) GB