Service manual

ABCDE F
G
HIJKLMN
1
2
3
4
5
6
7
8
9
10
11
O
- 32 -
AU_MUX_OUT_R
AU_MUX_CTRL_B
AU_MUX_CTRL_A
AU_MUX_OUT_L
I2C_SDA_OFDM
TUNER_I2C_SWITCH
I2C_SCL_OFDM
SDA_5V
SCL_5V
ANALOG_TUNER
VIDEO SCART1
Y_YUV
V_YUV
U_YUV
PORT_CS
AGC_DEFEAT
AUDIO SCART1
AUDIO SCART2
ANALOG_TUNER
OUT_R
OUT_L
8.5V
+5VA
+33V
0
R2053
0
R2054
0
R2055
0
R2056
0
R2040
0
R2041
0
R2042
0
R2043
0
R2044
0
R2057
0
R2045
0
R2058
0
R2046
0
R2059
0
R2047
0
R2060
0
R2048
0
R2061
0
R2049
0
R2062
0
R2050
CHIP
0
R2051
CHIP
0
R2052
XX
C2042
XX
C2041
0
R2039
0
R2038
XX
C2040
XX
C2037
XX
C2038
XX
C2039
XX
C2036
XX
C2030
XX
C2034
VIDEO SCART2
XX
C2082
XX
C2083
IF_AGC_DIGITAL
IF_DIGITAL_-
IF_DIGITAL_+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
WHT
49P
CN2022
+8.5V
+5V
GND
+33V
GND
PORT_CS
TUNER_I2C_SW
GND
I2C_SCL_OFDM
I2C_SDA_OFDM
GND
AGC_DIGITAL
GND
I2C_SCL
I2C_SDA
GND
IF_DIGITAL_-
IF_DIGITAL_+
GND
CVBS_TUNER
GND
V_YUV
GND
U_YUV
GND
Y_YUV
GND
CVBS2_OUT
GND
CVBS2_IN
MODE2
AV_LINK
FBLK2
B2
GND
G2
GND
R2
GND
CVBS1_OUT
GND
CVBS1_IN
MODE1
FBLK1
B1
GND
G1
GND
R1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
WHT
20P
CN2024
AGC_DEFEAT
SV_STBY/AUDIO MONO
GND
AU_MUX_OUT_R
AU_MUX_OUT_L
AU_MUX_CTRL_B
AU_MUX_CTRL_A
QSS
GND
LINEOUT_R
LINEOUT_L
GND
L2 OUT
R2 OUT
GND
L1 IN
R1 IN
GND
L1 OUT
R1 OUT
XX
R2144
0
R2145
5V_STBY
XX
R2148
0
R2147
BUFFER_V
SC1-IN-L
SC1-IN-R
SC1-OUT-L
SC1-OUT-
R
SC2-OUT-L
SC2-OUT-R
QSS
V
-IN-2
MODE2
AV_LINK
BLK2
V-IN-1
MODE1
BLK1
RED-1
V-OUT-2B
BLUE-
2
GREEN-2
RED-2
V-OUT-1B
BLUE-1
CVBS_ANALOG_RF
GREEN-1
AM
A / B BOARD CONNECTORS
SDA_5V
0
R1003
ANALOG_AGC_SW
R1006
0
I2C_SCL_SW
TUNER_I2C_SWITCH
16 15 14 13 12 11 10 9
87654321
MC74LVX8053DTR2
IC1000
Y1
Y0
Z1
Z
Z0
ENABLE
NC
GND C
B
A
X0
X1
X
Y
VCC
R1011
1k
I
2C_SCL_OFDM
0
R1007
R1001
100
1/10W
CHIP
R100
4
0
R1002
100
1/10W
C1000
47
+5VA
10uH
L1000
I
2C_SDA_SW
CHIP
R1008
0
R1000
XX
0.1
C1001
ANALOG_AGC
SCL_5V
I2C_SDA_OFDM
R1005
XX
R1009
0
0
R1010
5V_STB
Y
XX
R2146
UDZSTE-175.6B
D1102
I2C TUNER SWITCH
CN3006
35V
25V
ANALOG MULTIPLEXER/
DEMULTIPLEXER
1/10W
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
TO BDTR-2 BOARD
CN3005
A1/A1P
3/3
TP1
TP2
TP3
TP5
TP6
TP7
TP4
A1.-SE-1(KDL-26/32P2520/30) / A1P.-SE-1(KDL-40P2530)
TO BDTR-2 BOARD
~ A1/A1P Board Schematic Diagram [ Tuner, I/O Connectors & A/V Switching ] Page 3/3 ~
A1/A1P (3/3) Board Waveforms
500mVp-p (H) 500mVp-p (H)
TP1
TP2 TP3
980mVp-p (H)
(20us/div) (20us/di v) (20us/div) (10us/div) (10us/div) (10us/div)
TP4 TP5 TP6
1Vp-p (H) 650mVp-p (H) 650mVp-p (H)
(10us/div)
650mVp-p (H)
TP7