Sony KDL-26BX320 / KDL-26BX321 / KDL-32BX320 / KDL-32BX321 / KDL-32BX420 / KDL-37BX420 / KDL-40BX420 Service Manual ▷ View online
KDL-26/32/37/40BX320,321,420(AEP/UK)
25
SEC 2. ADJUSTMENT
HOW TO ENTERING SERVICE MODE
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode.
3) Service mode display.
Service Mode
Status Information
>>
Self diagnosis history
>>
Panel Selection
<[ SONY_WXGA_32_2 ]>
NO_SIGNAL_MUTE
<[
Off
]>
TUNING SYSTEM
<[
AUTO
]>
LVDS Spectrum (%o)
<[
20
]>
Low of HPD
<[
5
]>
[</>]Set[Home]Exit
5
Info
TV POWER
Channel
Volume
KDL-26/32/37/40BX320,321,420(AEP/UK)
26
ADJUSTMENT
4) How to use the remote commander.
5) After entering service mode, then turn off the power switch.
<Info><5><Vol Up><Power>
Service mode on
<Other> / <Power off + on>
Service mode off
/
/
The flow of control
Data Value up / down
Adjustment Item up / down
Function
KDL-26/32/37/40BX320,321,420(AEP/UK)
27
SEC 3. DIAGRAMS
3-1. BLOCK DIAGRAM
3-1-1. BLOCK
HDMI
Reciever
Reciever
Demod
Analog
Video In
Video In
Analog
Audio In
Audio In
HDMI
Contro
Contro
DRAM
Interface
Interface
Nand Flash
Interface
Interface
LVDS
Analog
Video Out
CLK/Crystal
IIS
PWM Audio Out
SPDIF
USB
Interface
Interface
I2C
UART
Servo ADC
GPIO
Power
DDR
512Mbit
DDR
512Mbit
Flash
512Mbit
USB Current
Limitter
RF
HDMI1
HDMI2
Video1
Comp1
Comp1
Video2
(Side)
(Side)
PC
SPDIF
Audio
Out
Out
USB
USB_DP
USB_DM
USB_PWR_EN0
USB_PWR_ERR
USB_DM
USB_PWR_EN0
USB_PWR_ERR
AIN1_L/R_AADC
AIN2_L/R_AADC
AIN3_L/R_AADC
AIN6_L/R_AADC
AIN2_L/R_AADC
AIN3_L/R_AADC
AIN6_L/R_AADC
CVBS1
CVBS3
Y0P/PB0P/PR0P/SOY0
Y1P/PB1P/PR1P/SOY1
BP/GP/RP/VSYNC/HSYNC
CVBS3
Y0P/PB0P/PR0P/SOY0
Y1P/PB1P/PR1P/SOY1
BP/GP/RP/VSYNC/HSYNC
RX0_0/1/2/C
RX1_0/1/2/C
RX1_0/1/2/C
SAW
Filter
ADCINN/P_DEMOD
TUNER_DATA/CLK
IF_AGC
TUNER_DATA/CLK
IF_AGC
Crystal
RA*/RBA*/RDQ
RDQM*
RDQM*
PDD*/etc
crystal in
crystal out
crystal out
Buffer
H?Board
IR
LED
Light
Sensor
Sensor
Key Pad
Speaker
Out
Out
Pa
ne
l
ne
l
Co
ntr
ol
ntr
ol
T?
Co
n
Co
n
TCON_RDY
Tx even/odd
LVDS_CTRL1
LVDS_CTRL2
LVDS_CTRL1
LVDS_CTRL2
VSYNC
V_Sync
LVDS_SEL(FFC:0,
othre:1)
PTSI_CLK
OPCTRL0
OPCTRL1
OPCTRL2
HDMI_HPD2
HDMI_SDA2
HDMI_SCL2
OPCTRL0
OPCTRL1
OPCTRL2
HDMI_HPD2
HDMI_SDA2
HDMI_SCL2
AOMCLK
AOBCK
AOLRCK
AODATA0
Audio
AMP
AL0/AR0_PWMDAC
ASPDIF
EEPROM
128Kbit
WS
DDC_LUT1
DDC_LUT0
DDC_LUT2
Mute
RESET_AMP
AMP_MUTE
OSDA0/
OSCL0
OSDA1/
OSCL1
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
Temp
Sensor
Sensor
AV_COMP_SEL
ADIN5_SRV
ADIN4_SRV
ADIN3_SRV
ADIN2_SRV
ADIN1 SR
ADIN4_SRV
ADIN3_SRV
ADIN2_SRV
ADIN1 SR
Key
Pad
Pad
Key
Pad
Pad
12V_SW
Balancer Error
12V_Audio
Audio AMP Error
T-Con Error
5V Det
BackLight Error
Balancer Error
12V_Audio
Audio AMP Error
T-Con Error
5V Det
BackLight Error
Error
Detction
Detction
12V
_S
W
12V
_A
MP
PA
NEL
_SE
L
Bal
anc
er
Err
PANEL_SEL
IR
Po
wer
Key
Reset
OIRI
PTSI_CLK
PTSI_VALID
PTSI_SYNC
PTSI_D0
PTSI_VALID
PTSI_SYNC
PTSI_D0
? D7
Po
we
r /
Inv
ert
er
we
r /
Inv
ert
er
POWER
ON ENABLE
AC OFF DET
LVDS
POWR
ON
Inverter Dimming
EEPROM
WC
RST
IC
Keep
100ms
or more
100ms
or more
3.3STBY
OSDA0/OSCL0
OSDA0/OSCL0
OSDA0/OSCL0
OSDA0
/OSCL0
/OSCL0
DD & LDO
AVDD12(1.2V)
AVDD33(3.3V)
VCCK(1.0V)
VCC2IO(1.8V)
VCC3IO(3.3V
AVDD33(3.3V)
VCCK(1.0V)
VCC2IO(1.8V)
VCC3IO(3.3V
HDMI_SDA0/SCL0
HDMI_HPD0/1/2
PWR5V_0/1/2
HDMI_CEC
HDMI_HPD0/1/2
PWR5V_0/1/2
HDMI_CEC
KDL-26/32/37/40BX320,321,420(AEP/UK)
28
3-1. BLOCK DIAGRAM
3-1-2. RESET/I2C & UART
DIAGRAMS
HDMI2
HDMI_SCL1/HDMI_SDA1
D-SUB15
For Debug
U0TX
U0RX
Tuner
HDMI1
OSDA0/OSCL0
OSDA1/OSCL1
TUNER_CLK/TUNER_DATA
HDMI_SCL0/HDMI_SDA0
Audio AMP
T-Con
EEPROM
Temp
Sensor
Light
Sensor
3V3_SW
5V_TUNER
3V3_SW
3V3_SW
UART
I2C
3V3_SW
MT5388
Reset IC
Flash
512Mbit
Audio
AMP
EEPROM
WS#
WP
ORESET#
USB
OCP
OCP
EN
USB_PWR_EN
RESET_AMP
GPIO_7
MT5388
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