45
US
MHC-V21.US.4-736-607-
12
(1)
Additional Inf
orma
tion
Updating the software
The software of this system may be
updated in the future.
You can update your system’s pre-
installed software from the websites
below.
Follow the online instructions to
update the software.
For customers in the United States:
<https://esupport.sony.com/US/>
For customers in Canada:
<http://esupport.sony.com/CA/>
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 if anything is blocking the
ventilation openings 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 44).
There is no sound.
•
•
Adjust the volume.
