Sony KDL-26U2000 Service Manual page 34

A B C
1
A1.-SE-1(KDL-26/32U2000) / A1P.-SE-1(KDL-40U2000)
R2148
XX
R2147
XX
2
+8.5V
1
+5V 2
GND 3
+33V 4
GND 5
R2053 0
PORT_CS 6
R2054 0
TUNER_I2C_SW 7
C2041
XX
GND 8
R2055 0
I2C_SCL_OFDM
9
R2056 0
I2C_SDA_OFDM 10
3
GND 11
C2042 XX
AGC_DIGITAL 12
R2039
GND 13
0
I2C_SCL 14
R2038 0
I2C_SDA 15
GND 16
C2040 XX
IF_DIGITAL_-
17
IF_DIGITAL_+
18
R2040
GND 19
0
4 CVBS_TUNER 20
C2037
GND 21
XX
TP1
V_YUV 22
R2041
GND 23 0
TP2
C2038 XX
TO BDT BOARD
U_YUV 24
CN3005 R2042
GND 25 0
TP3
C2039 XX
Y_YUV
26
C2036 R2043
XX
GND 27 R2044
0
CVBS2_OUT 28
C2030
XX
GND 29
R2057
5
CVBS2_IN 30
R2045
MODE2 31
C2082 XX
AV_LINK 32
R2058
FBLK2 33
R2046 0
B2
34
R2059
GND 35
0
G2 36
R2047 R2060
GND 37
0 0
R2 38
GND 39 C2034 R2048
6
XX 0
CVBS1_OUT 40
GND 41
R2061
TP4
CVBS1_IN 42
C2083
XX
MODE1
43
R2049 0
FBLK1 44
TP5 R2062
B1 45
R2050
GND 46 0
TP6
G1 47
R2051
0
GND 48
TP7 CHIP
7
R1 49
R2052
CN2022
0
49P
CHIP
WHT
A1/A1P (3/3) Board Waveforms
8
9
10
11
D E F
BUFFER_V
8.5V
+5VA
AGC_DEFEAT 1
SV_STBY/AUDIO MONO 2
+33V
GND 3
AU_MUX_OUT_R
4
PORT_CS
AU_MUX_OUT_L
5
TUNER_I2C_SWITCH
AU_MUX_CTRL_B
6
AU_MUX_CTRL_A 7
I2C_SCL_OFDM
QSS 8
I2C_SDA_OFDM
GND 9
LINEOUT_R 10
TO BDT BOARD
IF_AGC_DIGITAL
LINEOUT_L 11
CN3006
GND 12
SCL_5V
L2 OUT
13
SDA_5V
R2 OUT
14
GND 15
IF_DIGITAL_-
L1 IN 16
IF_DIGITAL_+
R1 IN 17
GND 18
ANALOG_TUNER
L1 OUT 19
CVBS_ANALOG_RF
R1 OUT 20
CN2024
V_YUV
20P
WHT
U_YUV
Y_YUV
0
V-OUT-2B
0
-IN-2
0 V
MODE2
0 AV_LINK
BLK2
BLUE-2
GREEN-2
RED-2
VIDEO SCART1
V-OUT-1B
0
V-IN-1
MODE1
BLK1
0 BLUE-1
GREEN-1
RED-1
A / B BOARD CONNECTORS
(20us/div) (20us/div)
TP2 TP3
TP1
500mVp-p (H) 500mVp-p (H) 980mVp-p (H)
G H I
R2145
0
5V_STBY
AGC_DEFEAT
AM
ANALOG_TUNER
R2144
XX
AU_MUX_OUT_R
AU_MUX_OUT_L
AU_MUX_CTRL_B
AU_MUX_CTRL_A
OUT_R
OUT_L
AUDIO SCART2
SC2-OUT-L
SC2-OUT- R
AUDIO SCART1
SC1-IN-L
SC1-IN-R
SC1-OUT-L
SC1-OUT-R
I2C TUNER SWITCH
SCL_5V
I 2C_SCL_OFDM
UDZSTE-175.6B
ANALOG_AGC
R1000
XX
ANALOG_AGC_SW
(20us/div) (10us/div) (10us/div)
TP4 TP5
1Vp-p (H) 650mVp-p (H)
~ A1/A1P Board Schematic Diagram [ Tuner, I/O Connectors & A/V Switching ] Page 3/3 ~
- 34 -
J K L M
A1/A1P
3 /3
R1005
XX
IC1000
MC74LVX8053DTR2 L1000
R2146
10uH
ANALOG MULTIPLEXER/ XX
R1001
DEMULTIPLEXER
100
C1000 C1001
1/10W
47 0 . 1
R1008
Y1 VCC
25V
0 35V
5V_STBY
CHIP
Y
Y0 I2C_SCL_SW
D1102
R1003
0
I2C_SDA_SW
Z1 X
R1006
R1002 R1011
0
100 1k
Z X1 1/10W
1/10W
R100 4
R1009
0 SDA_5V
0
Z0 X0
CHIP
R1007
0
ENABLE A I2C_SDA_OFDM
TUNER_I2C_SWITCH
NC B
R1010
0
GND C
(10us/div) (10us/div)
TP6 TP7
650mVp-p (H) 650mVp-p (H)
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
N O
+5VA