Sony KDL-40EX620 / KDL-40EX621 / KDL-46EX620 / KDL-46EX621 / KDL-55EX620 / KDL-55EX621 Service Manual ▷ View online
KDL-40EX620/40EX621/46EX620/46EX621/55EX620/55EX621 32
SECTION 3 - CHASSIS OVERVIEW
1
D
N
G
2
X
T
_
D
T
R
A
U
3
X
R
_
D
T
R
A
U
4
T
E
S
E
R
5
V
3
.
3
+
_
Y
B
T
S
6
M
V
T
_
E
D
O
M
7
X
R
_
A
T
R
A
U
8
)
2
D
M
(
C
N
UARTC_RX
UARTC_RX
9
1
1
VLED_VCC
10
10
STBY_+3.3V
UARTC_TX
10
2
2
VLED_VCC
12
9
AUDIO+12.5V
1
1
D
N
G
NC
3
NC
14
8
AUDIO+12.5V
UARTA_TX
12
NC
4
NC
11
7
AUDIO+12.5V_GND
ECS_MATRIX
13
7
5
VLED_GND
13
6
AUDIO+12.5V_GND
STBY_+3.3V
14
8
6
VLED_GND
15
5
REG+12.5V_GND
MODE_PEM
15
9
7
VLED_GND
17
4
REG+12.5V_GND
PEM_LOG_RX
16
10
8
VLED_GND
16
3
REG+12.5V
PEM_LOG_TX
17
11
9
LD_ERR
18
2
REG+12.5V
8
1
D
N
G
NC
10
NC
NC
1
T-CON_VCC
CN9004
13
11
GL_CTRL
CN6001
1-774-667-51
14
12
LED_ON
1-842-569-11
TL-EX1 Connector,FFC/FPC 18P
CN1002
HEADER ASSEMBLY FOR PWB 10P
0-844-177-01
JST
SM12B-PBVSS-TB(LF)(SN)
7
9
AC_OFF_DET
1
8
POWERON
6
7
BL_ERR
NC
6
NC
NC
5
NC
NC
4
NC
1
1
V
2
1
8
3
TCON_ON
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
Except EX720 Model
4
4
D
N
G
CN6002
GLS_CTRL
5
5
1-842-559-11
GLS_CTRL2
6
6
EMI_FAIL
7
7
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
POWER_ON
1
8
REG_12V
1
1
1
1
REG_12V
VLED_VCC
1
1
2
2
D
N
G
2
2
GND
VLED_VCC
2
2
3
3
C
N
3
3
NC
NC
3
NC
BL_ERR
4
4
4
4
BL_ERR
NC
4
NC
5
5
C
N
5
5
NC
NC
5
NC
6
6
C
N
6
6
NC
NC
6
NC
AC_OFF_DET
7
7
7
7
AC_OFF_DET
VLED_GND
7
5
CN6102
1-821-888-11
1-821-888-11
VLED_GND
8
6
JST L 7p
JST L 7p
CN6701
VLED_GND
9
7
VLED_GND
10
8
PRI_VCC
1
1
1
1
PRI_VCC
LD_ERR
11
9
PRI_GND
2
2
2
2
PRI_GND
NC
12
NC
CN6502
1-817-207-11
1-817-207-11
CN6601
GL_CTRL
13
11
JST
JST
LED_ON
14
12
PFC_GND
1
1
1
1
PFC_GND
PFC_OUT
2
2
2
2
PFC_OUT
1-822-339-11
SFP79-02WLB JAM
JST XA 14P
CN6700
SFP79-02WLB JAM
1-822-908-11
CN6600
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
B board
T- con
Option
HEM2 Board
T- con
B board
TL- EX1JIG board
BLK board
AC pigtail
B board
T- con
Option
BLK board
AC pigtail
BLK Board
BLK Board
28
1
12V
26
2
12V
27
3
GND
D
N
G
4
5
2
SM04B-PASS-TBT(LF)(SN)
1
1
-
0
6
4
-
9
1
8
-
1
1-819-468-11
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
L
I
A
F
_
I
M
E
7
7
C
N
8
8
B
T
-
S
H
G
-
B
8
0
M
S
T
S
J
T- con Board(PEL3)
BAT- V board
[3a-2 55 2/2]
FIGURE 3-12. CONNECTOR DIAGRAM FOR KDL-55EX620/55EX621 ONLY (2 OF 2)
KDL-40EX620/40EX621/46EX620/46EX621/55EX620/55EX621 33
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 17
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 19
.
SECTION 4 - TROUBLESHOOTING
Self Diagnosis
Supported model
KDL-40EX620/40EX621/46EX620/46EX621/55EX620/55EX621 34
SECTION 4 - TROUBLESHOOTING
TRIAGE CHART
Use the Triage Chart to determine what may possibly be causing the error before going out to the customers location.
Before you make the service call…
5. Chart Color Code
1. Confirm the symptom from the customer.
RED DOT: (Primary) Most likely defective part
2. Select that symptom from the chart.
▲
BLUE Triangle: (Secondary) Possible defective part
3. Bring all the boards listed for that symptom.
Power
Audio
2X
Power
3X
Audio
4X
Balancer
5X
TCON/HFR
6X**
BL
6X*
BL
7X
Temp
8X
No RED
STBY LED
(Dead Set)
No Video
(BL OK)
Distorted
Video
(BL OK)
No Audio
Main Speakers
MAIN BOARD
▲
▲
▲ ▲
*
▲
▲
POWER SUPPLY BOARD
▲
▲
HLR2
Switch Unit
LD
Service Bulletin
(See Appendix Section)
Software Update
LCD Panel
▲*
TCON
LVDS Cable
▲
▲
AC Outlet
Ventilation
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board Reference
Video
* Immediate Shutdown After Power ON & 7X
Protection Modes
*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
6X* Momentary Backlight before Shut OFF
6X** No Backlight before Shut OFF
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-40EX620 / KDL-40EX621 / KDL-46EX620 / KDL-46EX621 / KDL-55EX620 / KDL-55EX621 service manuals if exist.