52
GB
MHC-M20D.GB.4-736-071-
13
(1)
Additional Information
Troubleshooting
Should you encounter a problem
with your system, find your problem
in the troubleshooting checklist
below and take the corrective
action.
If the problem persists, consult your
nearest Sony dealer.
Note that if the service personnel
changes some parts during repair,
these parts may be retained.
If “PROTECTX” (X is a number)
and “CHECK MANUAL” flashes
on the display
Immediately unplug the AC
power cord (mains lead), and
check the following items.
•
•
Are you using only the supplied
speakers?
•
•
Is anything blocking the
ventilation holes of the unit?
After you have checked and
found no problems, reconnect
the AC power cord (mains lead),
and turn on the system. If the
issue persists, contact your
nearest Sony dealer.
General
The power does not turn on.
•
•
Check that the AC power cord
(mains lead) is connected securely.
The system has entered standby
mode.
•
•
This is not a malfunction. The
system enters standby mode
automatically in about 15 minutes
when there is no operation or
audio signal output (page 51).
There is no sound.
•
•
Adjust the volume.
•
•
Check the speaker connections
(page 16).
•
•
Check the connection of the
optional equipment, if any
(page 16).
•
•
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 picture/sound when
connected to the HDMI OUT (TV)
ARC jack.
•
•
Change the setting in [HDMI
SETUP] – [HDMI RESOLUTION]. The
problem may be solved.
•
•
The equipment connected to
the HDMI OUT (TV) ARC jack
does not conform to the audio
signal format. In this case, set
[HDMI SETUP] – [AUDIO(HDMI)] to
[PCM] (page 31).
•
•
Try the following:
•
—Turn the system off and on
again.
•
—Turn the connected equipment
off and on again.
•
—Disconnect then connect the
HDMI cable again.
There is no microphone sound.
•
•
Adjust the microphone volume
level.
•
•
Make sure the microphone is
connected to the MIC jack on the
unit correctly.
•
•
Make sure the microphone is
turned on.
Microphone adaptor (not
supplied) cannot be removed.
•
•
Use a tool such as plier to
disconnect the microphone
adaptor from MIC jack on the unit.
