46
US
MHC-V21.US.4-736-607-
12
(1)
•
•
Check the connection of the
optional equipment, if any
(page 15).
•
•
Turn on the connected equipment.
•
•
Unplug the AC power cord (mains
lead), then plug in the AC power
cord (mains lead) again and turn
on the system.
There is no microphone sound.
•
•
Adjust the microphone volume
level.
•
•
Make sure the microphone is
connected to the MIC1 or MIC2/
GUITAR jack on the unit correctly.
•
•
Make sure the microphone is
turned on.
There is severe hum or noise.
•
•
Move the system away from
sources of noise.
•
•
Connect the system to a different
wall outlet.
•
•
Install a noise filter (not supplied)
to the AC power cord (mains lead).
•
•
Turn off surrounding electrical
equipment.
•
•
The noise generated by the
cooling fans of the system may be
heard when the system is turned
on. This is not a malfunction.
•
•
Move the unit away from the neon
signs or fluorescent light.
The remote control does not
function.
•
•
Remove the obstacles between
the remote control and the unit.
•
•
Move the remote control closer to
the unit.
•
•
Point the remote control at the
unit’s sensor.
•
•
Replace the batteries (R03/size
AAA).
•
•
Move the unit away from the
fluorescent light.
There is acoustic feedback.
•
•
Reduce the volume.
•
•
Move the microphone and guitar
away from the system or change
the direction of the microphone.
“CHILD LOCK” appears when you
press any button on the unit.
•
•
Set the Child Lock function to off
(page 44).
A clicking sound is heard when the
system is turned on.
•
•
This is the operating sound and it
occurs when the system is turned
on or off, for example. This is not a
malfunction.
The sound loses stereo effect
during playback.
•
•
Turn off the Vocal Fader
(page 41).
•
•
Make sure the system is
connected properly.
Disc player
The disc tray does not open and
“LOCKED” appears on the display.
•
•
Consult your nearest Sony dealer
or local authorized Sony service
facility.
The disc tray does not close.
•
•
Load the disc correctly.
The disc does not eject.
•
•
You cannot eject the disc during
Synchronized Transfer or REC1
Transfer. Press
to cancel the
transfer, then press
on the unit
to eject the disc.
•
•
Consult your nearest Sony dealer.
Playback does not start.
•
•
Wipe the disc clean (page 52).
•
•
Reload the disc.
•
•
Load the disc that this system can
play back (page 8).
