Sony KDL-40NX725 Service Manual ▷ View online
KDL-40NX725
25
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
1
D
N
G
L
R
T
C
_
S
L
G
5
5
2
X
T
_
D
T
R
A
U
2
L
R
T
C
_
S
L
G
6
6
3
X
R
_
D
T
R
A
U
L
I
A
F
_
I
M
E
7
7
4
T
E
S
E
R
C
N
8
8
5
V
3
.
3
+
_
Y
B
T
S
B
T
-
S
H
G
-
B
8
0
M
S
T
S
J
6
M
V
T
_
E
D
O
M
7
X
R
_
A
T
R
A
U
8
)
2
D
M
(
C
N
1
1
VLED_VCC
9
X
R
_
C
T
R
A
U
2
2
VLED_VCC
0
1
X
T
_
C
T
R
A
U
NC
3
NC
1
1
D
N
G
NC
4
NC
2
1
X
T
_
A
T
R
A
U
7
5
VLED_GND
3
1
X
I
R
T
A
M
_
S
C
E
8
6
VLED_GND
4
1
V
3
.
3
+
_
Y
B
T
S
9
7
VLED_GND
5
1
M
E
P
_
E
D
O
M
10
8
VLED_GND
PEM_LOG_RX
16
11
9
LD_ERR
PEM_LOG_TX
17
NC
10
NC
8
1
D
N
G
13
11
GL_CTRL
4
0
0
9
N
C
V
3
.
3
+
_
Y
B
T
S
0
1
0
1
14
12
LED_ON
12
1
5
-
7
6
6
-
4
7
7
-
1
V
5
.
2
1
+
O
I
D
U
A
9
CN1002
P
8
1
C
P
F
/
C
F
F
,r
o
t
c
e
n
n
o
C
1
X
E
-
L
T
V
5
.
2
1
+
O
I
D
U
A
8
4
1
0-844-177-01
11
7
AUDIO+12.5V_GND
JST
13
6
AUDIO+12.5V_GND
SM12B-PBVSS-TB(LF)(SN)
15
5
REG+12.5V_GND
17
4
REG+12.5V_GND
16
3
REG+12.5V
18
2
REG+12.5V
24
1
T-CON_VCC
CN6001
1-821-620-11
HEADER ASSEMBLY FOR PWB 10P
1-821-620-11
HEADER ASSEMBLY FOR PWB 10P
7
9
AC_OFF_DET
1
8
POWERON
6
7
BL_ERR
NC
6
NC
NC
5
NC
NC
4
NC
8
3
TCON_ON
1
1
V
2
1
3
2
PFC_PWR
2
2
V
2
1
r
e
tt
i
m
E
D
3
9
1
GND
3
3
D
N
G
V
-
a
3
CN6002
4
4
D
N
G
1-842-559-11
GLS_CTRL
5
5
GLS_CTRL2
6
6
EMI_FAIL
7
7
8
8
8
C
N
1-821-135-11
1-821-135-11
CN6704 (32" G10AW)
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
POWERON
1
8
VLED_VCC
1
1
VLED_VCC
2
2
VLED_VCC
3
NC
VLED_VCC
4
NC
NC
5
NC
VLED_GND
6
NC
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" G4BW)
CN6705 (32" G10AW)
JST XA 14P
1-822-339-11
1-822-339-11
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
Energy_Saving_SW
AC(N)-IN
AC(N)-IN
1
1
AC(L)-IN
2
2
CN6002(40" G4BW /32" G10AW)
SFP79-02WLB JAM
1-822-908-11
1-822-908-11
Energy_Saving_SW
AC(L)-OUT
AC(L)-OUT
1
1
AC(N)-OUT
2
2
CN6003(40" G4BW /32" G10AW)
SFP79-02WLB JAM
1-822-908-11
1-822-908-11
CN6151(40" G4BW) SJM20-28W
ES SW
B board
T-con
Option
LD BLK board
HEM2
TC-EM Harness
PEL3-HEM2
T-con
B board
TL-EX1JIG board
AC pigtail
BAT-L board
(Only Interface between board and board)
T-con Board (PEL3)
LD BLK Board
FIGURE 3-7. CONNECTOR DIAGRAM (PAGE 2 OF 2)
KDL-40NX725 26
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 15
there
are several issues that may be resolved by updating the software
to the latest version. For a list of possible correctable issues see
“Examples of Software Correctable Symptoms” on page 17
.
SECTION 4 - TROUBLESHOOTING
Self Diagnosis
Supported model
KDL-40NX725 27
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 the primary component listed for that symptom.
3D LAN Power
Audio
2X 3X 4X*
4X** 5X 6X 7X 10X
No
WIFI
Dead set
No Video
Whole
Screen
Distortion
Isolated
Area
Distortion
No 3D
No Audio
Main Board
*
▲
▲
▲
Power Supply
▲
HEM2
LD
LCD Panel
TCON
WLAN
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board Reference
Protection Modes
* Immediate Shutdown After Power ON & 7X
4X** No Backlight before Shut OFF
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
Video
This Triage document is for general reference purposes. To access the most recent version of the Triage documents for the models listed in this
manual, login into the Sony Authorized Servicer Portal at
http://www.sony.com/asp
.
Click on the first or last page to see other KDL-40NX725 service manuals if exist.