DOWNLOAD Sony KDL-40HX720 / KDL-46HX720 / KDL-55HX720 / KDL-65HX720 Service Manual ↓ Size: 19.13 MB | Pages: 127 in PDF or view online for FREE

Model
KDL-40HX720 KDL-46HX720 KDL-55HX720 KDL-65HX720
Pages
127
Size
19.13 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-40hx720-kdl-46hx720-kdl-55hx720-kdl-65hx720.pdf
Date
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Sony KDL-40HX720 / KDL-46HX720 / KDL-55HX720 / KDL-65HX720 Service Manual ▷ View online

KDL-40/46/55/65HX720(CH)
81
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
KDL-40/46/55/65HX720(CH)
82
TROUBLE SHOOTING
3) 4 times blinking (Balancer Error)
4-time blinking
Check
PANEL_FAIL at
JL6017
on the B* Board
Panel
B* Board
Between 0.84V to 2.65V
Change G* Board
G* Board
Below 0.84V
Symptom 
improvement
NG
Change LED Driver Board
LED Driver Board
Symptom 
improvement
KDL-40/46/55/65HX720(CH)
83
TROUBLE SHOOTING
4) 5 times blinking (T-con Error)
5-time blinking
Check PANEL_VCC
at pin 1 of
CN6001 on
on the B* Board
G* Board
Replace the Harness 
Between G* and Panel
(a)
Replace
the LVDS Harness
Panel (T-con)
change
B* Board
Harness
LVDS Harness
Panel (T-con)
(a) exclude 60Hz Panel Model
12V NG
12V OK
NG
Symptom 
improvement
Symptom 
improvement
Symptom 
improvement
NG
NG
RGB sensor Change
RGB Sensor
(b) Only for Y* Models
Symptom 
improvement
KDL-40/46/55/65HX720(CH)
84
TROUBLE SHOOTING
5) 6 times blinking (Backlight Error)
6-time blinking
Check
the harness between
the T-con board and the
LED driver board.
Harness
Change G* board
G* Board
NG
Light Source
(Inside Panel Module)
Change LED driver
board
LED Driver Board
NG
Check FFC connection between
the LED driver board and
the light source 
(inside the panel module) 
FFC Connection
NG
NG
OK
OK
Symptom 
improvement
Symptom 
improvement
Change B*
board
B* Board
Symptom 
improvement
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