Sony KDL-32EX40B / KDL-32EX43B / KDL-40EX40B / KDL-40EX43B Service Manual ▷ View online
KDL-32/40EX4xB Series(AEP/UK)
33
3-7. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
B* to Switch Unit
harness check
Switch Unit
Harness
Switch Unit change
BAL Board
OK
NG
OK
NG
KDL-32/40EX4xB Series(AEP/UK)
34
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
BAL Board
OK
NG
Mechanical
(ex. bezel)
Green LED blinks
at power indicator
when using commander
near sensor’s window
Check the Harness
between the BAL Board
and the HLR Board
Exchange the Harness
Exchange the
HLR Board
Harness
OK
NG
OK
OK
NG
NG
KDL-32/40EX4xB Series(AEP/UK)
35
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
BAL Board
OK
NG
OK
NG
Connection result
Internet Access
Proxy setting
NG
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
BAL Board
Error Message appear
when the Wireless
Network is selected?
USB Dongle
NO
YES
NO
YES
KDL-32/40EX4xB Series(AEP/UK)
36
SEC 4. DIAGRAMS
4-1. BLOCK DIAGRAM
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