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Optional components
There is no sound.
• Refer to General item “There is no sound.”
(page 85) and check the condition of the system.
• Connect the component properly (page 81) while
checking:
– if the cords are connected properly.
– if the cord plugs are firmly inserted all the way.
• Turn on the connected component.
• Refer to the operating instructions supplied with
the connected component and start playing.
If the system still does not
operate properly after performing
the above measures or other
troubles not described above
occur, reset the system as
follows:
Use the buttons on the unit for the operation.
1 Unplug the power cord.
2 Plug the power cord back in.
3 Press ?/1 to turn on the unit.
4 Press x, ILLUMINATION and ?/1 at the
same time.
“COLD RESET” appears in the display.
The system is reset to the factory settings except
for DVD settings. You need to readjust all the
settings you made, such as the preset stations,
clock and timer.
To return the DVD setup to the
default settings*, perform reset
as follows:
1 Press DISPLAY when playback is
stopped.
The Control Menu appears on the TV
screen.
2 Press V or v repeatedly to select
(SETUP), then press ENTER.
3 Press V or v repeatedly to select
“RESET”, then press ENTER.
4 Press V or v repeatedly to select
“YES”, then press ENTER
It takes a few seconds to complete. Do not
press ?/1 when resetting the system.
* Except for Parental Control settings
Notes
• (MHC-GN999D/MHC-GN999DS only)
Turn off the subwoofer before you reset the system.
• (MHC-GNZ88D/MHC-GNZ77D only)
If you have connected an optional subwoofer, turn
off the subwoofer before you reset the system.
(When letters/numbers appear in the
display)
When the self-diagnosis function is activated to
prevent the system from malfunctioning, a
5-character service number (e.g. C 13 50) with a
combination of a letter and 4 digits appears on
the TV screen and the front panel display. In this
case, check the following table.
Self-diagnosis Function
First 3
characters of
the service
number
Cause and corrective action
C 13 This disc is dirty.
• Clean the disc with a soft cloth
(page 93).
C 31 The disc is not inserted correctly.
• Restart the system, then re-insert
the disc correctly.
E XX
(XX is a
number)
To prevent a malfunction, the system
has performed the self-diagnosis
function.
• Contact your nearest Sony dealer or
local authorized Sony service
facility and give the 5-character
service number.
Example: E 61 10