Sony MHC-V43D Help Manual page 29

Each time you perform the procedure below, the color system changes as follows:
NTSC PAL
Use the controls on the system to perform this operation.
1.
Press (power) to turn on the system.
2.
Press FUNCTION repeatedly to select [DVD/CD].
3.
Hold down MIC ECHO and MEGA BASS for more than 3 seconds.
[NTSC] or [PAL] appears on the display.
Hint
You can also enjoy the sound of audio/video equipment via the system. (See
If the audio output level from the system is low when connecting the optional equipment, try adjusting the audio output settings on
the connected equipment. It may improve the audio output level. For details, refer to the operating instructions of your equipment.
Note
Do not connect this system to the TV through the video deck.
When the audio signals input to the HDMI OUT (TV) ARC connector of the system are other than 2-channel Linear PCM signals,
the messages [CODE 01] and [SGNL ERR] appear on the display of the system. (See
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29
Listening to music of an external audio device,
About messages.)
etc..)