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Model
KDL-32EX720 KDL-32EX721 KDL-32EX723 KDL-32EX724 KDL-32EX725 KDL-32EX726 KDL-32EX727 KDL-32EX728 KDL-32EX729 KDL-37EX720 KDL-37EX723 KDL-37EX725 KDL-40EX720 KDL-40EX721 KDL-40EX723 KDL-40EX724 KDL-40EX725 KDL-40EX726 KDL
Pages
127
Size
26.46 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / S/N RANGE 3,000,001-5,500,000
File
kdl-32ex720-kdl-32ex721-kdl-32ex723-kdl-32ex724-kd.pdf
Date
PREV: Sony KDL-32EX720 / KDL-32EX723 / KDL-40EX720 / KDL-40EX723 / KDL-46EX720 / KDL-46EX723 / KDL-55EX720 / KDL-55EX723 (serv.man2) Service Manual

Sony KDL-32EX720 / KDL-32EX721 / KDL-32EX723 / KDL-32EX724 / KDL-32EX725 / KDL-32EX726 / KDL-32EX727 / KDL-32EX728 / KDL-32EX729 / KDL-37EX720 / KDL-37EX723 / KDL-37EX725 / KDL-40EX720 / KDL-40EX721 / KDL-40EX723 / KDL-40EX724 / KDL-40EX725 / KDL-40EX726 / KDL Service Manual ▷ View online

KDL-32/37/40/46/55EX720,721,723,724,725,726,726,727,728,729(AEP/UK/RUSS)
105
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
KDL-32/37/40/46/55EX720,721,723,724,725,726,726,727,728,729(AEP/UK/RUSS)
106
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
KDL-32/37/40/46/55EX720,721,723,724,725,726,726,727,728,729(AEP/UK/RUSS)
107
TROUBLE SHOOTING
6) 7 times blinking (Temperature Error)
7 times blinking
Setting circumstance
is OK?
Temperature,
Ventilation, etc.
Set to another
Location, etc.
NO
YES
Change B* Board,
and Aging a few hours
B* Board
OK
Panel
7) 8 times blinking (Software Error)
8 times blinking
If the Symptom
Improved by changing
the WIFI module
B* Board
NO
WIFI Module
YES
KDL-32/37/40/46/55EX720,721,723,724,725,726,726,727,728,729(AEP/UK/RUSS)
108
TROUBLE SHOOTING
8) 10 times blinking (Emitter Error)
10 times blinking
Check
the harness between
the T-con Board and
the HEM2 Board
Harness
NG
OK
Change HEM2 Board
HEM2 Board
OK
T-CON Board
NG
Page of 127
Display

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