DOWNLOAD Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 (serv.man5) Service Manual ↓ Size: 29.14 MB | Pages: 127 in PDF or view online for FREE

Model
KDL-40NX720 KDL-46NX720 KDL-55NX720 KDL-60NX720 (serv.man5)
Pages
127
Size
29.14 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-40nx720-kdl-46nx720-kdl-55nx720-kdl-60nx720-sm.pdf
Date
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Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 (serv.man5) Service Manual ▷ View online

KDL-40/46/55/60NX720(K)
97
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
Is the camera
function OK?
See
Camera malfunction
No
Yes
See
3D malfunction
No
Yes
Is the 3D
function OK?
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?
Yes
KDL-40/46/55/60NX720(K)
98
TROUBLE SHOOTING
3-3. NO POWER
No Power
Check STBY 3.3V
at 10 pin of CN6001
on the B* Board
Harness
G* Board
Replace
Between G* Board to
B* Board Harness
B* Board
NG
OK
NG
OK
Turn on the Switch
Check
Power Saving Switch
SW OFF
SW ON
KDL-40/46/55/60NX720(K)
99
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-40/46/55/60NX720(K)
100
TROUBLE SHOOTING
2) 3 times blinking (DC Alert, Audio Error and Communication Error)
3 times blinking
Check D+1.2V at
JL6007
on the B* Board
F6001,IC6005,etc
(B* Board)
Speaker
Check +3.3V_MAIN
at JL9234 on
the B* Board
Check
Speaker Impedance
at SP Connector
F6003,IC6003,etc
(B* Board)
Check AUDIO+12.5V
at pin 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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