Sony KDL-52LX900 / KDL-60LX900 Service Manual ▷ View online
KDL-52/60LX900(Hong Kong,Australia,New
Zealand,South Africa,,GA-Analog Area)
33
TROUBLE SHOOTING
3-6. NO SOUND
No Sound
Check the Speaker
Harness
Speaker Harness
Replace
the BUHS Board
BUHS Board
Speaker
NG
OK
NG
OK
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
KDL-52/60LX900(Hong Kong,Australia,New
Zealand,South Africa,,GA-Analog Area)
34
3-7. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
BUHS to Switch Unit
harness check
Switch Unit
Harness
Switch Unit change
BUHS Board
OK
NG
OK
NG
KDL-52/60LX900(Hong Kong,Australia,New
Zealand,South Africa,,GA-Analog Area)
35
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
BUHS Board
OK
NG
Mechanical
(ex. bezel)
Green LED blinks
at power indicator
when using commander
near sensor’s window
Check the Harness
between the BUHS Board
and the HLR Board
Exchange the Harness
Exchange the
HLR Board
Harness
OK
NG
OK
OK
NG
NG
KDL-52/60LX900(Hong Kong,Australia,New
Zealand,South Africa,,GA-Analog Area)
36
TROUBLE SHOOTING
3-8. NETWORK MALFUNCTION
1) Wired Network malfunction
Wired Network
on the TV
Connection result
Local Access
Ether net cable
Connection result
Cable Connection
BUHS Board
OK
NG
OK
NG
2) Internal Wireless Network malfunction
Wireless Network
on the TV
Is the radio field
Strength too weak
or even No signal?
Access Point
BUHS Board
Error Message appear
when the Wireless
Network is selected?
Wireless Module, Harness
NO
YES
NO
YES
Connection result
Internet Access
Proxy setting
NG
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