Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 Service Manual ▷ View online
KDL-40NX720/46NX720/55NX720/60NX720
36
SECTION 3 - CHASSIS OVERVIEW
(Only Interface between board and board)
V
2
1
1
8
2
V
2
1
2
6
2
D
N
G
3
7
2
25
25
4
GND
JST(VA)
1-842-566-11
1-842-566-11
1
1
12V
V
2
1
2
2
3
3
3
GND
D
N
G
4
4
L
R
T
C
_
S
L
G
5
5
1
D
N
G
2
L
R
T
C
_
S
L
G
6
6
2
X
T
_
D
T
R
A
U
L
I
A
F
_
I
M
E
7
7
3
X
R
_
D
T
R
A
U
C
N
8
8
4
T
E
S
E
R
STBY_+3.3V
STBY_+3.3V
5
Molex
MODE_TVM
6
1-842-558-11
7
X
R
_
A
T
R
A
U
8
)
2
D
M
(
C
N
9
X
R
_
C
T
R
A
U
0
1
X
T
_
C
T
R
A
U
1
1
D
N
G
1
1 VLED_VCC
2
1
X
T
_
A
T
R
A
U
2
2 VLED_VCC
3
1
X
I
R
T
A
M
_
S
C
E
3
3 VLED_VCC
4
1
V
3
.
3
+
_
Y
B
T
S
4
4 VLED_VCC
5
1
M
E
P
_
E
D
O
M
NC 5
5 NC
6
1
X
R
_
G
O
L
_
M
E
P
6
6 VLED_GND
7
1
X
T
_
G
O
L
_
M
E
P
7
7 VLED_GND
8
1
D
N
G
8
8 VLED_GND
CN9004
9
9 VLED_GND
1-774-667-51
Connect 10
10 VLED_GND
TL-EX1 Connector,FFC/FPC 18P
11
11 LD_ERR
10
10 STBY_+3.3V
NC 12
12 NC
12
9
AUDIO+12.5V
Connect 13
13 GL_CTRL
14
8
AUDIO+12.5V
14
14 LED_ON
11
7
AUDIO+12.5V_GND
13
6
AUDIO+12.5V_GND
15
5
REG+12.5V_GND
17
4
REG+12.5V_GND
16
3
REG+12.5V
18
2
REG+12.5V
NC
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
N
O
_
N
O
C
T
3
8
1
1
V
2
1
2
2
V
2
1
r
e
tt
i
m
E
D
3
3
2
PFC_PWR
3
3
D
N
G
V
-
a
3
9
1
GND
4
4
D
N
G
CN6002
GLS_CTRL
5
5
1-842-559-11
GLS_CTRL2
6
6
EMI_FAIL
7
7
8
8
8
C
N
1-821-135-11
1-821-135-11
CN6101
SJM20-28WLB
To B board (100106)
T-CON_Vcc12V
28
1
GND
27
3
T-CON_VCC12V
26
2
GND
25
4
T-CON_VCC_12V To B
24
NC
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
REG_12V
1
1
1
1
REG_12V
VLED_VCC
1
1
GND
2
2
2
2
GND
VLED_VCC
2
2
3
3
C
N
3
3
NC
VLED_VCC
3
3
BL_ERR
4
4
4
4
BL_ERR
VLED_VCC
4
4
5
5
C
N
5
5
NC
NC
5
5
6
6
C
N
6
6
NC
VLED_GND
6
6
AC_OFF_DET
7
7
7
7
AC_OFF_DET
VLED_GND
7
7
CN6102
1-821-888-11
1-821-888-11
VLED_GND
8
8
JST L 7p
JST L 7p
CN6701
VLED_GND
9
9
VLED_GND
10
10
PRI_VCC
1
1
1
1
PRI_VCC
LD_ERR
11
11
PRI_GND
2
2
2
2
PRI_GND
NC
12
12
CN6502
1-817-207-11
1-817-207-11
CN6601
GL_CTRL
13
13
JST
JST
LED_ON
14
14
PFC_GND
1
1
1
1
PFC_GND
PFC_OUT
2
2
1
1
-
9
3
3
-
2
2
8
-
1
T
U
O
_
C
F
P
2
2
SFP79-02WLB JAM
CN6600
JST XA 14P
CN6700
SFP79-02WLB JAM
1-822-908-11
CN6501
1-822-908-11
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
CN6003
SFP79-02WLB JAM
1-822-908-11
SFP79-02WLB JAM
1-822-908-11
Energy_Saving_SW
AC(L)-OUT
AC(L)-OUT
1
1
AC(N)-OUT
2
2
CN6002
SFP79-02WLB JAM
1-822-908-11
SFP79-02WLB JAM
1-822-908-11
HEM2 Board
TCON Board(PEL3)
TC-EM Harness
PEL3-HEM2
LD Board
BAT-L Board
ES SW
B Board
TCON
Option
TCON
B Board
TL-EX1JIG Board
AC pigtail
FIGURE 3-12. CONNECTOR DIAGRAM FOR KDL-55NX720/60NX720 MODELS ONLY (PAGE 2 OF 2)
KDL-40NX720/46NX720/55NX720/60NX720 37
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-40NX720/46NX720/55NX720/60NX720 38
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 8X 10X
No
WIFI
Dead set
No Video
Whole
Screen
Distortion
Isolated
Area
Distortion
No 3D
No Audio
Main Board
*
▲
▲
▲
▲
Power Supply
▲
HEM2 Board
LD Board
Service Bulletin
See Appendix Section
Software Update
LCD Panel
TCON
WLAN
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board Reference
* 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
Protection Modes
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-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 service manuals if exist.