Sony KDL-40NX720 / KDL-40NX723 / KDL-46NX720 / KDL-46NX723 / KDL-55NX720 / KDL-55NX723 / KDL-60NX720 / KDL-60NX723 Service Manual ▷ View online
3.5. NO SOUND
3.6. TV COMMANDER & BUTTONS MALFUNCTION
3-6-1. TV key Malfunction
KDL- 40, 46, 55, 60 NX720
RM-GD019
KDL- 40, 46, 55, 60 NX723
RM-GD019
Troubleshooting
No Sound
Button malfunction
on the TV
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
Replace the harness
between B*
to Switch Unit
Switch Unit
Switch Unit change
NG
Symptom
improvement
improvement
Change the Speaker
Harness
Replace
the B* Board
B* Board
NG
“TV Speakers”
Symptom
improvement
improvement
H
B* Board
NG
Symptom
improvement
improvement
Harness
the B Board
NG
Symptom
improvement
improvement
Harness
Speaker Harness
Speaker
Segment
Size
B* Board Type
3a-1
40
BAT-L
3a-1
46
BAT-L
-20-
3a-1
55
BAT-L
3a-1
60
BAT-L
3-6-2. IR remote commander malfunction
KDL- 40, 46, 55, 60 NX720
RM-GD019
KDL- 40, 46, 55, 60 NX723
RM-GD019
Troubleshooting
TV isn’t controlled
by remote commander
OK
Green LED light
at power indicator
Green LED blinks at power
Indicator when using commander
near sensor’s window
OK
Mechanical
(ex. bezel)
NG
Check the Harness
between the B* Board
NG
OK
Sensor is broken
between the B Board
and the H* Board
E h
H
H
NG
Sensor is broken
Symptom
improvement
Exchange Harness
Harness
NG
Exchange H* board
H* board
p
Symptom
improvement
Segment
Size
B*
H*
B* board
NG
Board
Type
Board
Type
3a-1
40
BAT-L
HLT2
3a-1
46
BAT-L
HLT2
-21-
3a-1
55
BAT-L
HLT2
3a-1
60
BAT-L
HLT2
3-6-3. RF remote commander malfunction
KDL- 40, 46, 55, 60 NX720
RM-GD019
KDL- 40, 46, 55, 60 NX723
RM-GD019
Troubleshooting
Commander
* Not applicable for these model
malfunction
Re‐Pairing action
NG
NG
Use new remote
d
b
i
Use new batteries
NG
RF remote commander is
Un‐registered
and new batteries
Remote
Batteries low power
Symptom improvement
Symptom improvement
Symptom improvement
Un registered
R
l
NG
Replace the Harness
NG
B* board
Replace
the RF Module
NG
between the B* Board
and the RF Module
Symptom
improvement
Symptom
improvement
NG
RF Module
Harness
improvement
improvement
-22-
3-7. Network MALFUNCTION
3-7-1. Wired Network malfunction
KDL- 40, 46, 55, 60 NX720
RM-GD019
KDL- 40, 46, 55, 60 NX723
RM-GD019
Troubleshooting
Wired Network
on the TV
Connection result
Cable Connection
OK
Connection result
Local Access
Connection result
Internet Access
NG
OK
NG
NG
Proxy setting
NG
Wired Set‐up
IP address setting
Auto Check Local router
DHCP server
Check cable
B board
OK
Ethernet Cable
Manual
Check IP address
&
NG
Local router setting
-23-
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