Sony KDL-40EX720 / KDL-46EX720 / KDL-55EX720 Service Manual ▷ View online
KDL-40/46/55EX720(K)
77
TROUBLE SHOOTING
2) USB Wireless Network malfunction
Wireless Network
on the TV
Is the radio field
Strength too weak
or even No signal?
or even No signal?
Access Point
B* Board
Error Message appear
when the Wireless
Network is selected?
USB Dongle
NO
YES
NO
YES
KDL-40/46/55EX720(K)
78
3-9. 3D MALFUNCTION
TROUBLE SHOOTING
3D malfunction
HEM2 Board
No
No
NG
Yes
Change
Watching environment
Panel (T-con)
[How to confirm IR-output.]
ex) Look IR-LED through CCD/CMOS camera.
IR has been output
on HEM board,
during 3D displaying.
Replace HEM2 board
Symptom
improvement
Check
whether there is
interception thing
between Emitter
and glasses.
No
Yes
Yes
Is 3D glasses
power on?
Power on
or
Charge battery
3D glasses
KDL-40/46/55EX720(K)
79
Skype malfunction
USB plugged?
Insert USB
Able to run Skype App?
Spec. USB overload.
Connect to other
USB port
B* board
Insert other Skype unit
or
USB dongle
Skype unit
B* board
Network connected?
Do network setup
Yes
No
Yes
No
No
OK
NG
OK
NG
OK
NG
Next page
Yes
3-10. Skype MALFUNCTION 1/2
-Unplug other USB device
-AC OFF/ON
-AC OFF/ON
TROUBLE SHOOTING
KDL-40/46/55EX720(K)
80
Far end
Video/Audio quality?
Network speed
or
far end system issue
Auto-Focus work?
Sound quality?
No video?
Manual Focus work?
Check Auto-Focus area
Enough network speed?
Skype unit
Call Skype sound test
Far end setting/system
Move unit away
from speaker
Skype unit
Audio problem
Video problem
Previous page
OK
NG
Yes
No
Yes
No
No
Yes
Yes
NG
3-10. Skype MALFUNCTION 2/2
TROUBLE SHOOTING
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