Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 (serv.man3) Service Manual ▷ View online
KDL-40/46/55/60NX720(CH)
109
3-7. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
Replace the Harness
between B* to
Switch Unit
Switch Unit
Harness
Switch Unit change
B* Board
OK
NG
OK
NG
KDL-40/46/55/60NX720(CH)
110
TROUBLE SHOOTING
2) IR remote commander malfunction
TV isn’t controlled
by remote commander
Green LED light
at power indicator
OK
NG
Sensor is broken
HLR Board
B* Board
OK
NG
Mechanical
(ex. bezel)
Green LED blinks
at power indicator
at power indicator
when using commander
near sensor’s window
Check the Harness
between the B* Board
and the HLR Board
Exchange the Harness
Exchange the
HLR Board
Harness
OK
NG
OK
OK
NG
NG
KDL-40/46/55/60NX720(CH)
111
TROUBLE SHOOTING
3-8. NETWORK MALFUNCTION
1) Wired Network malfunction
Wired Network
on the TV
Connection result
Local Access
Connection result
Cable Connection
OK
NG
OK
NG
Connection result
Internet Access
Proxy setting
NG
B* Board
Check the Ethernet Cable
Ethernet Cable
Check IP address
and Local router setting
Wired Set-up
IP address setting
Check Local router DHCP server
Auto
Manual
OK
NG
KDL-40/46/55/60NX720(CH)
112
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
3) Internal 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?
Wireless Module, Harness
NO
YES
NO
YES
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