Sony HT-Z9F Operating Instructions Manual page 70

Internet Connection
You cannot connect the system to
the Internet.
 Check the wired or wireless LAN
connection.
 Restart the router or wireless LAN
router.
Remote Control
The remote control of this system
does not function.
 Point the remote control at the
remote control sensor on the main
unit (page 10).
 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 33).
Others
The Control for HDMI function does
not work properly.
 Check the connection with the
system (refer to the supplied Startup
Guide).
 Enable the Control for HDMI function
on the TV. For details, refer to the
operating instructions of your TV.
 Wait a while, and then try again. If
you unplug the system, it will take a
while before operations can be made.
Wait for 15 seconds or longer, and
then try again.
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 Make sure the devices connected to
the system support the Control for
HDMI function.
 Enable the Control for HDMI function
on the devices connected to the
system. For details, refer to the
operating instructions of your device.
 The type and number of devices that
can be controlled by the Control for
HDMI function is restricted by the
HDMI CEC standard as follows:
– Recording devices (Blu-ray Disc
recorder, DVD recorder, etc.): up to
3 devices
– Playback devices (Blu-ray Disc
player, DVD player, etc.): up to 3
devices (this system uses one of
them)
– Tuner-related devices: up to 4
devices
– Audio system (receiver/
headphones): up to 1 device (used
by this system)
"PRTCT" flashes in the front panel
display and the system is turned
off.
 Disconnect the AC power cord (mains
lead) and make sure nothing is
obstructing the ventilation holes of
the system.
"PRTCT," "PUSH," speaker name
("SUB," "SUR L," or "SUR R"), and
"POWER" flash alternately in the
front panel display.
 Press  (power) on the
corresponding speaker ("SUB":
subwoofer, "SUR L": left rear speaker,
"SUR R": right rear speaker) to turn
off. For the subwoofer, disconnect
the AC power cord (mains lead) and
make sure nothing is obstructing the
ventilation holes of the subwoofer,
then restart the system. For the rear
speaker, disconnect the AC power
cord (mains lead), then restart the
system. If they are reconnected
properly, the display in the front