Read Sony KDL-55W950B Service Manual online
KDL-55W950B 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
CN6401
CN9101
POWER_ON
28
21
3
30
BL_ERR
10
29
GND
STBY3.3V
23
12
5
28
BL_ON
GND
21
14
12
27
GND
REG12V
18
8
7
26
GND
REG12V
17
16
14
25
REG12V
REG12V
16
23
9
24
GND
REG12V
15
18
16
23
REG12V
REG12V
14
25
11
22
GND
REG12V
13
20
28
21
POWER_ON
GND
12
27
13
20
+19.5V
GND
11
22
15
18
+19.5V
GND
10
29
17
16
+19.5V_SS
GND
9
24
21
14
GND
GND
7
26
23
12
STBY3.3V
BL_ON
5
28
27
10
AC_OFF_DET
BL_ERR
3
30
18
8
+19.5V_HOLD
T-CON_ON
26
NC
GND
10
19
10
19
GND
PS_STATUS
25
NC
GND
9
17
9
17
GND
GND
24
NC
LD_STDBY
8
15
8
15
LD_STBY
GND
22
NC
TS_OUT
6
11
6
11
TEMP_SENSOR
T-CON_VCC12V
20
NC
SPI_CLK
5
9
5
9
LD_PWM_3 (0_SPI_CLFK)
T-CON_Vcc12V
19
NC
SPI_DATA
4
7
4
7
LD_PWM_2 (0_SPI_DATAF)
GND
8
NC
SPI_LAT
3
5
3
5
LD_PWM_1 (0_SPI_LATF)
DIGITAL_STBY
6
NC
EMIT_IN
2
3
2
3
LD_PWM_0 (0_EMT__IN)
BLINKING
4
NC
SA_MODE
1
1
1
1
LD_MODE_SW
PWM_DIMMER
2
NC
BL_TYPE3
7
NC
NC
13
FB_REF
DC_DIMMER
1
NC
CN2001
NC
6
IP_REF
CN6601
NC
4
TCON_ON
VLED_VCC
1
14
1
14
VLED_VCC
NC
2
DIGITAL_STBY(NC)
VLED_VCC
2
13
2
13
VLED_VCC
VLED_VCC
3
12
3
12
VLED_VCC
VLED_VCC
4
11
4
11
VLED_VCC
VLED_GND
6
9
6
9
VLED_GND
VLED_GND
7
8
7
8
VLED_GND
VLED_GND
8
7
8
7
VLED_GND
VLED_GND
9
6
9
6
VLED_GND
SIGNAL_GND
10
5
10
5
VLED_GND
LD_ERR
11
4
11
4
LD_ERR
GL_CTRL
12
3
12
3
GL_CTRL
REG12V
14
1
14
1
SET_12V
NC
5
NC
NC
10
NC
NC
13
NC
NC
2
NC
CN2002
CN6101
1
AC-N
2
AC-L
POWER SUPPLY BOARD
AC_IN
LD BOARD
LD
G1A
MAIN BOARD
AC_OFF_DET
27
10
BAX
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