Sony KDL-32HX750 / KDL-40HX750 / KDL-46HX750 / KDL-55HX750 Service Manual ▷ View online
KDL-32/40/46/55HX750(K)
117
Far end
Video/Audio quality?
Network speed
or
far end system issue
Auto-Focus work?
Sound quality?
No video?
Manual Focus work?
Check Auto-Focus area
Enough network speed?
Skype unit
Call Skype sound test
Far end setting/system
Move unit away
from speaker
Skype unit
Sound
quality
quality
No video
Previous page
OK
NG
No
Yes
No
Yes
No
Yes
Yes
NG
3-11. Skype MALFUNCTION 2/2
TROUBLE SHOOTING
KDL-32/40/46/55HX750(K)
118
SEC 4. DIAGRAMS
4-1. BLOCK DIAGRAM
4M
41M
12M
48M
Push
GND
32.76
8K
[ASCOT2SR]
[Sil9287B]
[TPS2553DBV]
[TPS2553DBV]
[GL850G]
[RTL8201F]
[PST3629]
[LM75B]
One–
NAND
Muxed
4Gb
DDR3
–1333
2Gb
DDR3
–1333
2Gb
P
A
A
N
E
L
H / L
[YDA175]
(Service)
Aerial
HDMI1
(ARC)
X’tal
LNA
(GA only)
Silicon
Tuner
IF1
X_SYSTEM1_RST
HDMI2
HDMI3
HDMI4
TMDS1
DDC1
DDC1
HPD1
CEC1
TMDS2
TMDS2
DDC_5V_1
ARC
DDC2
HPD2
DDC_5V_2
CEC2
DDC3
HPD3
DDC_5V_3
TMDS3
CEC3
DDC4
HPD4
DDC_5V_4
TMDS4
CEC4
HDMI_ARC
3.3->1
EQ SW
I2CA
I2CB
DMD_RST
DMD_CLK_ENABLE1
DMD_CLK_ENABLE2
TS
X’tal
IF1
TMDS
DDC
CEC
VIDEO_CV
COMP_Y
SPDIF
PC
COMP
HP/Line
Out
CVBS
VideoA_Det
VIDEO_CV
VIDEO1_LR
COMP_LR
COMP_Y, Pb, Pr
VideoB_Det
VideoB_Det
Cr_Det
HOTEL_IR_SW
SW
For HOTEL IR Pass through
(GA/CH/HK/TW)
SIRCS
PC_R,PC_G,PC_B,PC_H,PC_V
PC_LR
PC_5V, PC_DDC
PC_CON_Det
HP/Line Out LR
HP_/ Line Out Det
SPDIF
Main
SPEAKER
Main Speaker_Out_LR
X_FAULT
X_AUDIO_MUTE1
Analog Video
Digital Video/TS/TMDS
UART
Digital Audio
Analog Audio
Analog Signal
PWM
I2C
SPI
X_SYSTEM1_RST
AUDIO_MON
Main Speaker_Out_LR
Atreyu_SPDIF
Audio
Power AMP
Line Out_LR
COMP_LR
Tuner_LR
PC_LR
OPAMP
[TPA6138A2]
COMP_Y
COMP_Pb
COMP_Pr
COMP_Pb
COMP_Pr
PC_
R
GB_E
N
LPF
PC_V
PC_G
PC_B
PC_R
PC_H
PC_B
PC_R
PC_H
VIDEO1_LR
Tuner_LR
MS
USB2
USB1
USB3
Wifi
Wifi
H Con.
Current
Limit
5V
5V
X_SYS
TEM1_
R
S
T
Current
Limit
USB
HUB
HUB
Crystal
Ether
X
_
SYSTEM1_
RST
Ether
PHY
LVDS_ODD
LVDS_EVEN
LVDS_EVEN
TCON
PEL4
SA
_MODE
I2
C
C
BINT(
WP)
PW
M_
DI
MMER
DC_DIMMER
GRS_CTRL1
GRS_CTRL2
B
linking(EL_TIM)
EM
I_
F
A
IL
T-CON_V
C
C (12V)
SYSTEM2_PWR
DDC
REG_12V
1.5V
3.3V
2.5V
LDO
LDO
SYSTEM2_PWR
5V
DDC
REG_12V
1.2V
SYSTEM1_PWR
DDC
REG_12V
3.3V
LDO
LDO
3.4V
LDO
LDO
S1.8V
LDO
S1.2V
LDO
SYSTEM2_PWR
Power
T-CON_VCC
REG12V
AUDIO_12V
AUDIO_12V
REG12V
Power_Control
MAIN_PWR
BACKLIGHT_ON
PWM_DIMMER
BACKLIGHT_MON
ACT_STBY
AC_MON
DC_DIMMER
STBY 3.3V
TCON-ON
Blinking(EL_TIM)
TL-JIG
UARTA(LOG)
UARTC(ECS)
UARTC(ECS)
Reset
UARTD(VPC_LOG)
Temp Sensor
Sircs
X’tal
X’tal
Reset
AC_MON
Reset
/RST
JTAG
UARTA (LOG)
I2CA (EQSW, Temp Sensor)
I2CB (Ext Demod/AudioAMP)
I2CC (Panel)
I2CB (Ext Demod/AudioAMP)
I2CC (Panel)
UARTC (ECS/Hotel)
UARTD (VPC_LOG)
UARTD (VPC_LOG)
Temp
Sensor
I2CA
SIRCS
For HOTEL IR Pass through
DMD_RST
X_AUDIO_MON
DEBUG_LED2
DEBUG_LED3
DMD_CLK_ENABLE1
PANEL_PWR
DMD_CLK_ENABLE2
HDMI_ARC
HP_DET
PC_RGB_EN
PC_RGB_EN
KEY
Power_KEY
KEY
Light_Sensor_Det
Light Sensor
LED
STBY_LED
POWER_LED
TIMER_LED
PIC_MUTE_LED
REC_LED
TD Emitter
EMI_FAIL
GRS_CTRL2
GRS_CTRL1
DC_MON
KEY
Light_
Sensor_Det
BACK
LIGHT_
MON
PANEL_
PWR_
Det
DC_5V_Det
STBY_LED
TIMER_
L
E
D
MA
IN_
P
WR
SYSTEM2_
P
W
R
R
SYSTEM1_
P
W
R
R
PIC
_
MUTE
_LE
D
AC
_M
ON
POWE
R_
KEY
KEY
DEBUG_LE
D1
PS_
STATUS (no use)
HOTEL_IR_
SW
POWE
R_LED
RE
C_
LED
C_
LED
X_
SYSTEM1_RST
SYSTEM1_RST
ACT_STBY
X_
AUDIO
AUDIO
_
MUTE1
X_
AUDIO
AUDIO
_
MUTE2
PC
_C
ON_
_C
ON_
DET
VI
DE
DE
OA
_DET
VIDE
OB
_DE
T
CR
_D
ET
ET
BACK
LIGHT_
ON
NMI
SA
_MODE
_MODE
B
INT
/P
/P
a
n
e
l le
s
s
s
Panelless
Atreyu
KDL-32/40/46/55HX750(K)
119
DIAGRAMS
4-2. CONNECTOR DIAGRAM
4-2-1. KDL-32HX750 (1/2)
3D Emitter
CN300
EMI_FAIL
GND
GLS_CTRL
NC
12V
1-821-132-11 JAM
1-822-693-11
JAM SZ15-03WLR
JAM SZ15-03WLR
1-821-138-11
JAM SYT10-11WS
JAM SYT10-11WS
1-819-334-11
JST SM05B-GHS-TB
JST SM05B-GHS-TB
1-821-119-11
SYT10-05WS
SYT10-05HG
CN2001
To BAP
Panel_Ctrl1 / VSYNC
1
5
1
Panel_Ctrl1 / LVDS_OPTION
Panel_Ctrl2 / EMI_FAIL
0
5
2
Panel_Ctrl2 / TCON_RDY
Panel_Ctrl3 / GLS_CTRL2
9
4
3
Panel_Ctrl3 / NC
CN9006
Panel_Ctrl4 / GLS_CTRL
8
4
4
Panel_Ctrl4 / LUT_SEL2
WIFI GND
Panel_Ctrl5 / LRFLAG
7
4
5
Panel_Ctrl5 / LUT_SEL1
WIFI VBUS
Panel_Ctrl6 / SA_MODE
6
4
6
Panel_Ctrl6 / LUT_SEL0
SW
WIFI USB_P
Panel_Ctrl7 / DC_DIMMER
5
4
7
Panel_Ctrl7 / NC
GND
Panel_Ctrl8 / EL_TIM
4
4
8
Panel_Ctrl8 / PANEL_SEL
WIFI USB_N
4
5
2
3
1
6
3
1
7
1
10
2
4
2
1
2
1
2
1
2
3
4
2
1
3
3
1
5
5
4
9
8
NC
3
4
5
D
N
G
Panel_Ctrl9 / BINT
3
4
9
Panel_Ctrl9 / BUS_SW
WIFI GND
C
N
3
3
2
T
N
I
_
R
E
W
O
P
SW module
Panel_Ctrl10 / PWM_DIMMER
2
4
0
1
Panel_Ctrl10 / NC
EMI_FAIL
1
5
NC
5
3
3
1
Y
E
K
Panel_Ctrl11 / SDA
1
4
1
1
Panel_Ctrl11 / SDA
EMI_12V
GLS_CTRL1
EMI_GND
1
V
2
1
Panel_Ctrl12 / SCL
0
4
2
1
Panel_Ctrl12 / SCL
3
2
V
2
1
D
N
G
9
3
3
1
D
N
G
2
3
D
N
G
PANEL_EVEN4_P
8
3
4
1
PANEL_EVEN4_P
HL board
GLS_CTRL2
4
D
N
G
PANEL_EVEN4_N
7
3
5
1
PANEL_EVEN4_N
CN100
NC
NC
PANEL_EVEN3_P
6
3
6
1
PANEL_EVEN3_P
1-819-460-11
RF GND
C
N
9
2
1
V
3
.
3
+
Y
B
T
S
PANEL_EVEN3_N
5
3
7
1
PANEL_EVEN3_N
JST
SM04B-PASS-TBT(LF)(SN)
SM04B-PASS-TBT(LF)(SN)
D
N
G
4
3
8
1
D
N
G
RF Rx / HOTEL_VOL_UP
C
N
7
2
2
D
N
G
LED/IR/OPT_Sensor
1
PANEL_EVEN_CLK_P
RF RST / HOTEL_SP_MUTE
C
N
5
2
3
C
E
R
_
D
E
L
IR Capture
PANEL_EVEN_CLK_P
3
3
9
PANEL_EVEN_CLK_N
2
3
0
2
PANEL_EVEN_CLK_N
RF Tx / HOTEL_VOL_Down
C
N
1
2
4
Y
B
T
S
_
D
E
L
D
N
G
1
3
1
2
D
N
G
RF STBY3.3V / HOTEL_CL_STBY_+3.3V
C
N
9
1
5
R
E
M
I
T
_
D
E
L
RF UART_SEL
C
N
3
2
6
R
E
W
O
P
_
D
E
L
PANEL_EVEN2_P
0
3
2
2
PANEL_EVEN2_P
PANEL_EVEN2_N
9
2
3
2
PANEL_EVEN2_N
HLR LED_ON_TIMER
5
6
2
7
E
T
U
M
_
C
I
P
_
D
E
L
HLR SIRCS
0
1
8
2
8
S
N
E
S
_
T
P
O
PANEL_EVEN1P
8
2
4
2
PANEL_EVEN1P
PANEL_EVEN1_N
7
2
5
2
PANEL_EVEN1_N
HLR LED_STBY
4
0
3
9
V
3
.
3
+
D
V
PANEL_EVEN0_P
6
2
6
2
PANEL_EVEN0_P
WIFI VBUS / HOTEL_CL_I2CA_SDA
C
N
0
2
0
1
S
C
R
I
S
PANEL_EVEN0_N
5
2
7
2
PANEL_EVEN0_N
HLR LED_POWER
6
C
N
1
1
E
R
U
T
P
A
C
_
R
I
D
N
G
4
2
8
2
D
N
G
WIFI GND / HOTEL_CL_I2CA_SCL
C
N
HLR LED_REC
3
PANEL_ODD4_P
3
2
9
2
PANEL_ODD4_P
PANEL_ODD4_N
2
2
0
3
PANEL_ODD4_N
HLR LED_PIC_MUTE
HLR GND
7
2
PANEL_ODD3_P
1
2
1
3
PANEL_ODD3_P
PANEL_ODD3_N
0
2
2
3
PANEL_ODD3_N
HLR OPT_SENS
8
D
N
G
9
1
3
3
D
N
G
HLR STBY_3.3V
1
9
9
HLR 3.3V
PANEL_ODD_CLK_P
8
1
4
3
PANEL_ODD_CLK_P
PANEL_ODD_CLK_N
7
1
5
3
PANEL_ODD_CLK_N
HOTEL_CL_MAIN_+3.3V
C
N
D
N
G
6
1
6
3
D
N
G
HOTEL_HTL_LINEOUT_L
C
N
PANEL_ODD2_P
5
1
7
3
PANEL_ODD2_P
SW_POWER_KEY
2
3
1
PANEL_ODD2_N
4
1
8
3
PANEL_ODD2_N
HOTEL_CL_AC_MON
C
N
SW_KEY
PANEL_ODD1P
3
1
9
3
PANEL_ODD1P
SW GND
PANEL_ODD1_N
2
1
0
4
PANEL_ODD1_N
PANEL_ODD0_P
1
1
1
4
PANEL_ODD0_P
HOTEL_HTL_REG+12V
C
N
SONY LOGO
PANEL_ODD0_N
0
1
2
4
PANEL_ODD0_N
LOGO 5V
D
N
G
9
3
4
D
N
G
D
N
G
8
4
4
D
N
G
LOGO GND / HOTEL_CL_GND
C
N
C
N
C
N
1-819-538-11
1-818-692-22
D
N
G
7
5
4
Panel_Ctrl13
SHLDP-40V-S(B)
JST
C
N
6
6
4
D
N
G
PANEL_VCC_SW
5
7
4
PANEL_VCC_SW
PANEL_VCC_SW
4
8
4
PANEL_VCC_SW
PANEL_VCC_SW
3
9
4
PANEL_VCC_SW
PANEL_VCC_SW
2
0
5
PANEL_VCC_SW
1
2
3
2
3
4
5
6
7
8
V
2
1
PANEL_VCC_SW
1
1
5
PANEL_VCC_SW
12V
GND
GND
GND
GLS_CTRL
GLS_CTRL2
EM_DET
NC
wifi module(EXCEPT 3a Deri)
GND
DC 5V
USB_DATA+
EXCEPT 3a Deri
USB_DATA-
GND (S-GND)
1-819-495-11
GHR-05V-S
Faston #187
SPEAKER
L+ (Terminal # 187)
Front
L- (Terminal # 110)
Lch
Faston #110
Faston #110
SPEAKER
R- (Terminal # 110)
Front
R+ (Terminal # 187)
Rch
Faston #187
CN4601
1
1
L+
2
2
L-
2
3
R-
1
4
R+
1-842-593-11
1-842-566-12
JST PBVP-04V
JST SM04B-PBVSS-TB(LF)(SN)
PANEL FFC
68pin x4
SZ15-03HGR
1-821-900-11
1-821-900-11
51pin FFC
LVDS-FFC
B-PEL4
B-PEL4
BAP- H Harness
T-con Board
BAP board
1-819-468-11
JST / SM08B-GHS-TB
JST / SM08B-GHS-TB
JAE/FI-RNE51SZ-HF
1-842-546-11
FFC Direct Connector :I-PEX
FFC Direct Connector :I-PEX
1-821-125-11
SYT10-11HG
5
1
2
3
4
6
7
8
9
11
10
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
29
30
31
32
33
34
35
36
37
38
39
40
38
39
40
12
KDL-32/40/46/55HX750(K)
120
DIAGRAMS
4-2-1. KDL-32HX750 (2/2)
CN6401
To B board (100106)
POWER_ON
AC_OFF_DET
T-CON_ON
PS_STATUS
STBY_GND
STBY3.3V
D
N
G
D
N
G
T-CON_VCC12V
T-CON_Vcc12V
AU_12V
AU_12V
BTV12V
BTV12V
REG12V
REG12V
D
N
G
D
N
G
D
N
G
D
N
G
AU_GND
AU_GND
DIGITAL_STBY
BL ON
BLINKING
BL_ERR
PWM_DIMMER
DC_DIMMER
1-842-551-11
1-842-598-11
SJM20-28HG
JAM SJM20-28WLB
MOLEX L4P
1-822-359-11
MOLEX L5P
1-822-360-11
+OUT1
1
NC
2
NC
3
+OUT2
4
CN6802
CN6801
-OUT1
1
NC
2
NC
3
-OUT2
4
NC
5
AC_IN
AC-N
1
1
AC-L
2
2
CN6101
SFP79-02WLB JAM
1-822-908-11
CN6001
1-843-150-11 1-843-151-11(JST)
PBDP-20V-S SM20B-PBDSS-TF
G-B Harness
AC pigtail
LS
FY12 GL2A
Board
BAP board
28
27
19
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
13
20
NC
11
10
NC
NC
NC
1
4
2
NC
NC
5
3
9
7
NC
NC
8
6
15
17
12
18
14
16
TCON_VCC
AUDIO+12.5V
REG+12.5V
AUDIO+12.5V
REG+12.5V
AUDIO+12.5V_GND
REG+12.5V_GND
AUDIO+12.5V_GND
REG+12.5V_GND
STBY3.3V
GND/PS_STATUS
BLINKING
POWER_ON
PWM_DIMMER
DIGITAL_STBY
DC_DIMMER
BL_ON
BL_ERR
AC_OFF_DET
TCON_ON
19
1
17
2
13
3
18
4
14
5
7
6
11
7
8
8
12
9
23
10
24
11
4
12
28
13
2
14
6
15
1
16
5
17
3
18
27
19
26
20
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