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  • KDL-32EX421, KDL-32EX425, KDL-32EX520, KDL-32EX521, KDL-32EX523, KDL-32EX524, KDL-32EX525, KDL-37EX521, KDL-37EX524, KDL-37EX525, KDL-40EX520, KDL-40EX521, KDL-40EX523, KDL-40EX524, KDL-40EX525, KDL-46EX520, KDL-46EX521, KDL-46EX524, KDL

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Model
KDL-32EX421 KDL-32EX425 KDL-32EX520 KDL-32EX521 KDL-32EX523 KDL-32EX524 KDL-32EX525 KDL-37EX521 KDL-37EX524 KDL-37EX525 KDL-40EX520 KDL-40EX521 KDL-40EX523 KDL-40EX524 KDL-40EX525 KDL-46EX520 KDL-46EX521 KDL-46EX524 KDL
Pages
67
Size
3.99 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / S/N RANGE 1,000,001 - 1,999,999
File
kdl-32ex421-kdl-32ex425-kdl-32ex520-kdl-32ex521-kd.pdf
Date
PREV: Sony KDL-22PX300 / KDL-32EX403 / KDL-32EX40B / KDL-32EX43B / KDL-32EX500 / KDL-32EX501 / KDL-32EX503 / KDL-32EX504 / KDL-32EX505 / KDL-32EX508 / KDL-32EX603 / KDL-32EX605 / KDL-32EX700 / KDL-32EX701 / KDL-32EX703 / KDL-32EX705 / KDL-32EX706 / KDL-32EX707 / KDL Service Manual

Sony KDL-32EX421 / KDL-32EX425 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-32EX524 / KDL-32EX525 / KDL-37EX521 / KDL-37EX524 / KDL-37EX525 / KDL-40EX520 / KDL-40EX521 / KDL-40EX523 / KDL-40EX524 / KDL-40EX525 / KDL-46EX520 / KDL-46EX521 / KDL-46EX524 / KDL Service Manual ▷ View online

KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
37
TROUBLE SHOOTING
3-2. FLOW CHART
START
Does the Power Led
stay on when the 
TV is switched on ?
Is the Standby Led
blink ?
Is the Picture and
Sound OK ?
END
See
No Power
See
Standby LED Blink
See
No Picture / No Sound
Is the network
connection OK?
See
Can’t connect network
No
Yes
Yes
No
No
Yes
Do the buttons
on the TV & Remote
Commander work
properly?
See
TV/ Commander 
button malfunction
No
No
Yes
No
Yes
See
Skype malfunction
No
Is the Skype
function OK?
See
HDD Rec malfunction
No
Is the HDD Rec
function OK?
Yes
Yes
KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
38
TROUBLE SHOOTING
3-3. NO POWER
No Power
Check STBY 3.3V
at pin 10 of CN6001
on the B* Board
Harness
G* Board
Replace
Between G* Board to
B* Board Harness
B* Board
NG
OK
NG
OK
KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
39
1) 2 times blinking (Main Power Error)
TROUBLE SHOOTING
3-4. STANDBY LED BLINK
2 times blinking
Check REG12V at
pins 2/3 of
CN6001 on
the B* Board
B* Board
Harness
G* Board
Replace
Between G* Board to
B* Board Harness
12V NG
12V OK
NG
OK
KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
40
TROUBLE SHOOTING
2) 3 times blinking (DC Alert, Audio Error and Communication Error)
3 times blinking
Check D+1.2V at
pin 14 of IC6005
on the B* Board
F6001,IC6005,etc
(B* Board)
Speaker
Check +3.3V_MAIN
at pins 9/10 of CN9003
on the B* Board
Check
Speaker Impedance
at SP Connector
F6003,IC6003,etc
(B* Board)
Check AUDIO+12.5V
at pins 8/9 of
CN6001 on
the B* Board
G* Board
Check +12.5V
at F4601 on
the B* Board
F4601,IC4601,etc
(B* Board)
IC4601,etc
(B* Board)
DC_ALERT
NG
OK
AUDIO
AUDIO
FE/BE Communication
NG
OK
NG
OK
NG
OK
NG
OK
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