Sony HT-ST9 Manuel D'instructions page 45

Wireless sound (Subwoofer)
No sound is heard from the subwoofer.
 Make sure the AC power cord (mains lead) of the subwoofer is
connected properly (refer to the supplied Startup Guide).
 The on/standby indicator on the subwoofer does not light.
 Make sure the AC power cord (mains lead) of the subwoofer is
connected properly.
 Press  (on/standby) of the subwoofer to turn on the
power.
 The on/standby indicator on the subwoofer flashes slowly in
green or lights in red.
 Move the subwoofer to a location near the Bar Speaker so that
the on/standby indicator on the subwoofer lights in green.
 Follow the steps in "Further Setting for the Wireless System
(Subwoofer)" (page 35).
 Check the connection status of the wireless sound system
(page 35).
 The on/standby indicator on the subwoofer flashes quickly in
green.
 Consult your nearest Sony dealer.
 The on/standby indicator on the subwoofer flashes in red.
 Press  (on/standby) of the subwoofer to turn off the power
and check whether the ventilation opening of the subwoofer
is blocked or not.
 The subwoofer is designed for playback of bass sound. When the
input source does not contain much of bass sound, as is the case
with most TV programs, the bass sound may not be audible.
 Press SW  + on the remote control to increase the volume of the
subwoofer (page 48).
Sound skips or has noise.
 If there is a device nearby that generates electromagnetic waves,
such as a wireless LAN or a microwave oven in use, locate the
system apart from it.
 If there is an obstacle between the Bar Speaker and the
subwoofer, move or remove it.
 Locate the Bar Speaker and the subwoofer as close as possible.
 Switch the wireless LAN frequency of any nearby Wi-Fi router or PC
to 2.4 GHz range.
 Switch the network connection of the TV or Blu-ray Disc Player
from wireless to wired.
Remote control
The remote control of this system does not function.
 Point the remote control at the remote control sensor on the Bar
Speaker (page 47).
 Remove any obstacles in the path between the remote control
and the system.
 Replace both batteries in the remote control with new ones, if they
are weak.
 Make sure you are pressing the correct button on the remote control.
TV remote control does not work.
 This problem might be solved by enabling the IR repeater function
(page 34).
Others
The Control for HDMI function does not work properly.
 Check the HDMI connection (refer to the supplied Startup Guide).
 Set up the Control for HDMI function on the TV. Refer to the
operating instructions supplied with the TV regarding how to set
the TV.
 Make sure that any device connected is compatible with "BRAVIA"
Sync.
 Check the Control for HDMI settings on the connected device.
Refer to the operating instructions supplied with the connected
device.
 If you connect/disconnect the AC power cord (mains lead), wait
more than 15 seconds before operating the system.
 If you connect the audio output of video device with the system
using a cable other than an HDMI cable, no sound may be output
because of "BRAVIA" Sync. In such a case, set [Control for HDMI] to
[Off] or connect the cable from the audio output jack of the video
device directly to the TV (page 25).
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