Sony KDL-40EX725 Service Manual ▷ View online
KDL-40EX725 24
SECTION 3 - CHASSIS OVERVIEW
NC
1
12V
NC
2
12V
NC
3
GND
D
N
G
4
C
N
SM04B-PASS-TBT(LF)(SN)
1
1
-
0
6
4
-
9
1
8
-
1
V
2
1
1
1
V
2
1
2
2
D
N
G
3
3
D
N
G
4
4
L
R
T
C
_
S
L
G
5
5
2
L
R
T
C
_
S
L
G
6
6
1
D
N
G
L
I
A
F
_
I
M
E
7
7
2
X
T
_
D
T
R
A
U
V
3
.
3
+
_
Y
B
T
S
0
1
0
1
C
N
8
8
3
X
R
_
D
T
R
A
U
V
5
.
2
1
+
O
I
D
U
A
9
2
1
B
T
-
S
H
G
-
B
8
0
M
S
T
S
J
4
T
E
S
E
R
V
5
.
2
1
+
O
I
D
U
A
8
4
1
11
1-819-468-11
5
V
3
.
3
+
_
Y
B
T
S
D
N
G
_
V
5
.
2
1
+
O
I
D
U
A
7
6
M
V
T
_
E
D
O
M
D
N
G
_
V
5
.
2
1
+
O
I
D
U
A
6
3
1
1
1
VLED_VCC
15
7
X
R
_
A
T
R
A
U
D
N
G
_
V
5
.
2
1
+
G
E
R
5
2
2
VLED_VCC
8
)
2
D
M
(
C
N
D
N
G
_
V
5
.
2
1
+
G
E
R
4
7
1
NC
3
NC
16
9
X
R
_
C
T
R
A
U
V
5
.
2
1
+
G
E
R
3
NC
4
NC
0
1
X
T
_
C
T
R
A
U
V
5
.
2
1
+
G
E
R
2
8
1
7
5
VLED_GND
24
1
1
D
N
G
C
C
V
_
N
O
C
-
T
1
8
6
VLED_GND
2
1
X
T
_
A
T
R
A
U
1
0
0
6
N
C
9
7
VLED_GND
3
1
X
I
R
T
A
M
_
S
C
E
1
1
-
9
6
5
-
2
4
8
-
1
10
8
VLED_GND
HEADER ASSEMBLY FOR PWB 10P
4
1
V
3
.
3
+
_
Y
B
T
S
11
9
LD_ERR
5
1
M
E
P
_
E
D
O
M
NC 10
NC
6
1
X
R
_
G
O
L
_
M
E
P
13 11
GL_CTRL
7
1
X
T
_
G
O
L
_
M
E
P
T
E
D
_
F
F
O
_
C
A
9
7
14 12
LED_ON
1
8
1
D
N
G
N
O
R
E
W
O
P
8
CN1002
4
0
0
9
N
C
R
R
E
_
L
B
7
6
0-844-177-01
NC
6
NC
1-774-667-51
JST
NC
5
NC
TL-EX1 Connector,FFC/FPC 18P
SM12B-PBVSS-TB(LF)(SN)
1
1
V
2
1
NC
4
NC
N
O
_
N
O
C
T
3
8
2
2
V
2
1
r
e
tt
i
m
E
D
3
3
3
D
N
G
V
-
a
3
3
2
PFC_PWR
Except EX720 Model
GND
4
4
9
1
GND
2
2
0
0
6
N
C
5
5
L
R
T
C
_
S
L
G
1
1
-
9
5
5
-
2
4
8
-
1
6
6
2
L
R
T
C
_
S
L
G
EMI_FAIL
EMI_FAIL
7
7
8
8
C
N
1-821-135-11
1-821-135-11
CN6704 (37" G10A)
To B board (100106)
T-CON_Vcc12V
28
NC
GND
27 NC
T-CON_VCC12V
26
NC
GND
25 NC
T-CON_VCC_12V To B
24
1
GND
23 NC
BDR_ASU_12V
22
NC
GND
21 NC
BDR_ASU_12V
20
NC
GND
19 NC
REG12V
18
2
GND
17
4
REG12V
16
3
GND
15
5
AU_12V
14
8
AU_GND
13
6
AU_12V
12
9
AU_GND
11
7
STBY3.3V
10
10
GND
9
1
T-CON_ON
8
3
AC_OFF_DET
7
9
BL_ERR
6
7
NC
5
NC
NC
4
NC
PFC_ON
3
2
NC
2
NC
POWER_ON
1
8
VLED_VCC
1
1
VLED_VCC
2
2
VLED_VCC
3
NC
VLED_VCC
4
NC
NC
5
NC
6
NC
VLED_GND
VLED_GND
7
5
VLED_GND
8
6
VLED_GND
9
7
VLED_GND
10
8
LD_ERR
11
9
NC
12
NC
GL_CTRL
13
11
LED_ON
14
12
CN6801 (40" G4B)
CN6705 (32" G10A)
1-822-339-11
JST XA 14P
JST XA 14P
AC_IN
AC-N
AC-N
1
1
AC-L
2
2
CN6001
SFP79-02WLB JAM
1-822-908-11
SFP79-02WLB JAM
1-822-908-11
CN6151 (40" G4B)
SJM20-28WLB
B board
T- con
Option
BLK board
BAT- V board
T- con Board(PEL3)
HEM2 Board
T- con
B board
TL- EX1JIG board
AC pigtail
BLK Board
BLK Board
BLK board
AC pigtail
FIGURE 3-5. CONNECTOR DIAGRAM (2 OF 2)
KDL-40EX725 25
OVERVIEW
This chapter provides information regarding the Self Diagnosis
feature in our TVs.
UPDATING THE SOFTWARE
As mentioned in
“Section 2 - Software Requirements” on page
14
there are several issues that may be resolved by updating
the software to the latest version. For a list of possible correctable
issues see
“Checking the Software Version” on page 15
.
SECTION 4 - TROUBLESHOOTING
Self Diagnosis
Supported model
KDL-40EX725 26
SECTION 4 - TROUBLESHOOTING
TRIAGE CHART
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
Before you make the service call…
1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
▲
3. Bring all the boards listed for that symptom.
3D LAN Power
Audio
2X
3X
4X*
4X** 5X 6X
7X
8X
No
3D
No
WIFI
Dead set
No Video
Whole
Screen
Distortion
Isolated
Area
Distortion
No Audio
Main Board
*
▲
▲
▲
▲
Power Supply
▲
HEM2
▲
LD
Service Bulletin
(See Appendix
Section)
Software Update
LCD Panel
TCON
WIFI
BLUE Triangle: (Secondary) Possible defective part
5. Chart Color Code
RED DOT: (Primary) Most likely defective part
*NOTE: REFER TO LCD PANEL SERVICE MANUAL IN REFERENCE
LIBRARY DATABASE FOR CORRECT REPLACEMENT PARTS BASED
ON SERIAL NUMBER.
▲*
Sharp Vertical or Horizontal Lines, Missing Pixels
4X* Momentary Backlight before Shut OFF
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board Reference
Video
* Immediate Shutdown After Power ON & 7X
4X** No Backlight before Shut OFF
Protection Modes
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