Sony MHC-M40D Operating Instructions Manual page 58

The unit becomes hot during
operation.
The heat buildup is caused by the
• •
electric circuit operation even if it
is operated at low volume. This is
not a malfunction.
Place the unit on an open shelf
• •
cabinet. Do not place it in a
confined space, such as a rack.
Place the unit at least 10 cm from
• •
the surrounding wall and objects.
Do not cover the ventilation holes
with newspapers, tablecloths,
curtains, etc.
There is no sound.
Adjust the volume.
• •
Check the speaker connections
• •
(page 19).
Check the connection of the
• •
optional equipment, if any
(page 19).
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 35).
Try the following:
• •
•
— Turn the system off and on
again.
•
— Turn the connected equipment
off and on again.
58
GB
•
— 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 MIC1 or MIC2/
GUITAR 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 MIC1 or MIC2/
GUITAR jack on the unit.
No TV sound is heard from the
system. "CODE 01" and "SGNL ERR"
appear on the display.
This system supports 2-channel
• •
Linear PCM formats only. Check
the audio output setting on the
TV and change it to PCM output
mode if automatic mode is
selected.
Check that the speaker output
• •
setting on the TV is set to use
external speakers.
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.