Sony KDL-32EX421 / KDL-32EX425 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-32EX524 / KDL-32EX525 / KDL-37EX521 / KDL-37EX524 / KDL-37EX525 / KDL-40EX520 / KDL-40EX521 / KDL-40EX523 / KDL-40EX524 / KDL-40EX525 / KDL-46EX520 / KDL-46EX521 / KDL-46EX524 / KDL Service Manual ▷ View online
KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
49
TROUBLE SHOOTING
2) USB Wireless Network malfunction
Wireless Network
on the TV
Is the radio field
Strength too weak
or even No signal?
or even No signal?
Access Point
B* Board
Error Message appear
when the Wireless
Network is selected?
USB Dongle
NO
YES
NO
YES
3) Internal Wireless Network malfunction
Wireless Network
on the TV
Is the radio field
Strength too weak
or even No signal?
or even No signal?
Access Point
B* Board
Error Message appear
when the Wireless
Network is selected?
Wireless Module, Harness
NO
YES
NO
YES
KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
50
3-9. HDD-Rec MALFUNCTION
TROUBLE SHOOTING
HDD Rec
Malfunction
B board
HDD is connected
to the appropriate
USB port?
Connect to the
appropriate port
No
Yes
USB Hub is inserted
in between the
USB port and HDD?
USB Hub is
not supported
Yes
No
Is the drive size larger
than 32GB and
Smaller than 2TB??
Only 32GB~2TB
is supported
No
Yes
All the setups and
restrictions listed in
iManual are cleared?
Check the iManual
No
Yes
KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
51
4-1. BLOCK DIAGRAM
SEC 4. DIAGRAMS
4-1-1. KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525
27M
4M
41M
41M
[HORUS3]
[ASCOT2Sip]
[ZHUI]
[Sil9287B]
[SEKITO2]
[LNBH23]
[NJM2561]
0
0
[NJU72040V]
[D–510D]
[D–510D]
[NJU72011RB]
0
0
H/L
[TPS2553DBV]
[TPS2553DBV]
[RTL8201E]
[GL850G]
12M
One–
NAND
DDR3
Muxed
2Gb
–1333
2Gb
DDR3
–1333
2Gb
48M
GND
32.76
8K
[PST3629]
[LM75B]
P
A
A
N
E
L
Push
Cable
Satellite
Terrestrial
HDMI1
(ARC)
HDMI2
HDMI3
HDMI4
PC
COMP
SCART
SPDIF
HP/Line
Out
Main
SPEAKER
Analog Video
Digital Video/TS/TMDS
Analog Audio
UART
I2C
I2C
Analog Signal
PWM
SPI
X_AUDIO_MUTE1
X_AUDIO_MUTE2
X_FAULT
Main Speaker_Out_LR
SPDIF
HP/Line Out LR
HP_/ Line Out Det
PC_R,PC_G,PC_B,PC_H,PC_V
PC_LR
PC_5V, PC_DDC
PC_CON_Det
COMP_LR
VideoB_Det
ASPECT1
TV_Out
Scart_CV,R,G,B,FB
Scart_LR
Scart_LR
TV_Out_LR
ASPECT1
VideoA_Det
S_Det
CEC3
DDC4
HPD4
CEC4
DDC_5V_4
TMDS4
CEC2
DDC3
HPD3
DDC_5V_3
TMDS3
TMDS1
DDC1
DDC1
HPD1
CEC1
TMDS2
DDC2
TMDS2
DDC2
HPD2
DDC_5V_1
DDC_5V_2
ARC
LNA
SW
X’tal
X’tal
LNA
Silicon
Tuner
Silicon
Tuner
Zero-IF
27MHz
Ext Demod
IFAGC
Ext Demod
IFAGC
X’tal
TS1
TS2
DiSEqC_Out
DiSEqC_In
DiSEqC_In
DDC
I2CB
DMD_RST
DMD_CLK_ENABLE1
DMD_CLK_ENABLE2
I2CB
CI/CI+
5V
Current
Limit
MS
Power
_
KE
Y
KE
Y
BD
_DI
S
C
1
,2
BD_
E
JECT
UAR
T
E
H Con.
USB4
BD
USB3
Wifi
5V
USB2
USB1
Current
Limit
USB
HUB
HUB
Crystal
X_SYS
T
EM1_
RS
T
5V
Current
Limit
X_
S
Y
S
T
EM
1
_
R
S
T
Ether
Ether
PHY
BACKLIGHT
TCON
SA
_MODE/L
U
T
_
SEL0
PE
M
_
WDT/XBUSY/BI
NT
X
_
PE
M
_
RST/LUT_SEL2/X_FRC_RS
T
MO
DE_PEM/TCON_RDY
LUT_SEL1/X_TCO
N
_RST/LR_FL
A
G
T_P
A
NE
L_SEL
I2C_C
1.5V
SYSTEM2_PWR
DDC
REG_12V
REG_12V
1.2V
SYSTEM1_PWR
DDC
STBY 3.3V
T-CON_VCC
REG12V
AUDIO_12V
AUDIO_12V
AUDIO_12V
REG12V
Power
SYSTEM2_PWR
DDC
REG_12V
3.3V
5V
SYSTEM2_PWR
DDC
REG_12V
SYSTEM2_PWR
S1.8V
LDO
3.3V
LDO
LDO
S1.2V
LDO
3.4V
LDO
LDO
2.5V
LDO
LDO
Power_Control
MAIN_PWR
BACKLIGHT_ON
DIMMER
BACKLIGHT_MON
PFC_PWR
AC_MON
DIMMER_DC
TCON-ON
UARTA(LOG)
UARTC(Hotel/ECS)
UARTD
PEM_LOG
MODE_PEM
Reset
DIMMER2
I2CA(Hotel_Clock)
SIRCS
TL-JIG
Hotel /ECS
Temp Sensor
X’tal
Reset
X’tal
AC_MON
Reset
I2CA (EQSW, Temp Sensor, Hotel Clock)
I2CB (Ext Demod)
I2CC (Panel, RGB Sensor)
I2CB (Ext Demod)
I2CC (Panel, RGB Sensor)
UARTA (LOG)
UARTB (RF-Remote)
UARTC (IR Blaster/ECS)
UARTC (IR Blaster/ECS)
I2CA
X_Hotel_PWR_CTRL
Temp
Sensor
Sircs
KEY
LED
Human Sensor
Light Sensor
STBY_LED
POWER_LED
TIMER_LED
PIC_MUTE_LED
REC_LED
Light_Sensor_Det
Human_Sensor_Det
Power_KEY
KEY
UARTE
SIRCS
DIMMER
LOGO
DIMMER_DC
DMD_CLK_ENABLE2
DMD_RST
DEBUG_LED2
DEBUG_LED3
DMD_CLK_ENABLE1
PANEL_PWR
HP_DET
X_WIFI_RST
SPDIF_SEL
X_AUDIO_MON
HDMIEQ_INT
HDMIEQ_INT
DC
_MON
KEY
Light_Sensor_Det
AS
PE
CT1
PE
CT1
Hum
a
n_Sensor_Det
PANEL_
SEL
BACK
LIGHT_
M
ON
PANEL_
PWR_
Det
STBY_LED
TIMER_L
E
D
MA
IN_
P
WR
MA
IN_
S
S_
MON
MON
SYSTEM2_
P
W
R
R
SYSTEM1_
P
W
R
R
PIC_
MUTE
_LE
D
AC
_M
ON
PFC_MON
POWE
R_
KEY
KEY
DEB
U
G_LE
D1
X_
RF_
RF_
R
ST
X
_
H
O
T
E
L
_
P
W
R_
CT
R
R_
CT
R
L
POWE
R_
LED
LED
RE
C_
LED
C_
LED
X_
SYSTEM1_R
SYSTEM1_R
S
T
PFC_PWR
X_
AUDIO
AUDIO
_
MUTE1
X_
AUDIO
AUDIO
_
MUTE2
VI
DE
OA
DE
OA
_DET
VI
DE
DE
OB_DE
T
BACK
LIGHT_
O
N
NMI
PC
_C
ON_
_C
ON_
D
ET
CR
_D
ET
ET
LUT_SE
L2
LUT_SE
L1
LUT_SE
L0
BI
N
N
T
TC
O
O
N
_RDY
DATA
1
Panelless
BT
V
V
_
P
IN
T
NAND_
W
P
P
BTV
_
G
PIO
x
6
X_
RF
_
RF
_
R
S
T
SYSTEM
1_PWR
ASURA
UARTB
BTV_SE
L
I2S_D
0
BTV_SPD
IF
I2CA
UART_E
BT
V
V
_
F
ID
ASURA
Audio
Power AMP
TV_Out_LR
Tuner_LR
Main Speaker_Out_LR
Atreyu_SPDIF
Line Out_LR
PC_LR
COMP_LR
AV3_LR
Scart1_LR
Tuner_LR
PC_G
PC_B
PC_R
PC_H
PC_V
PC_R
PC_H
PC_V
COMP_Y
COMP_Pb
COMP_Pr
Scart_CV
Scart_G
Scart_B
Scart_R
Scart_R
Scart_FB
75
Ω
Drv
TV_Out
TMDS
DDC
CEC
X’tal
IF1
TS
EQ SW
I2CA
3.3->1
Atreyu
OPAMP
OPAMP
AUDIO_MON
X_SYSTEM1_RST
LVDS_ODD
LVDS_EVEN
LVDS_EVEN
Digital Audio
X_SYSTEM1_RST
IF2
IF1
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