Haier L39B2180a, Service Manual

Page: 33 / 59

S ervice M a nu a l
Model No.:
- 33 -
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
T_
S
D
A
T_
S
CL
IF
A
GC
S
CLK
S
D
A
T
IF+ IF-
IF
A
GC
RF in
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
3.3
V
_Tun
TUNER_3.3
TUNER_3.3
+5
V
_
S
W
3.3
V
_Tun
IF+
3
IF-
3
S
CLK
3
S
D
A
T3
D_RF_
A
GC
DEMOD_IF_
A
GC
Title
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Each of these Vcc pins of TDA18272 is decoupled by a single capacitor (pin 1, 35, 27, 16)
C1
62
100uF/1
6V
C1
62
100uF/1
6V
1 2
R1
72
100R R1
72
100R
C19
6
4
7
n
C19
6
4
7
n
1 2
R1
7
3
1K R1
7
3
1K
C
2
08
1
2
0P C
2
08
1
2
0P
1
2
J15J15
1 2
3 4
5 6
C131 22
n
C131 22
n
C
2
0
7
150P C
2
0
7
150P
1 2
C30 100n C30 100n
1 2 L14
8. 2 nH_110 mA _+/-0.1nH
L14
8. 2 nH_110 mA _+/-0.1nH
1 2
L13 10R/500
mA
L13 10R/500
mA
1
2
R188 NC R188 NC 1 2
C1
6
0
100n C1
6
0
100n
1 2
Y
2
1
6
MHZ
Y
2
1
6
MHZ
1
2
3
C1
6
9
4
7
n
C1
6
9
4
7
n
1 2
C
2
09
1
2
0P C
2
09
1
2
0P
1
2
L1 7
2 . 2 nH 1000 mA +/- 0. 2 nH
L1 7
2 . 2 nH 1000 mA +/- 0. 2 nH
C1
76
18p C1
76
18p 1 2
A
DJ/GND
OUT
IN
U8 BM111
7
-
A
DJ
A
DJ/GND
OUT
IN
U8 BM111
7
-
A
DJ
3 2 1
4
C140 2
.
7
n
C140 2
.
7
n
1 2
C138 6
.8n
C138 6
.8n
1 2
R189 100R R189 100R
R
2
39
4
7
R
R
2
39
4
7
R
L11100nH_150 mA _+/-5% L11100nH_150 mA _+/-5%
J
2
0
IF-0
6
J
2
0
IF-0
6
RF
1
2
2
3
3
4
4
R1
77
0R
R1
77
0R
1
2
L19
330nH 140
mA
5%
L19
330nH 140
mA
5%
1 2
C1
27
100n C1
27
100n
R193
430R
R193
430R
1
2
C144 100n C144 100n
1 2
L1 6
2 .4nH_ 22 0 mA _+/-0.05nH
L1 6
2 .4nH_ 22 0 mA _+/-0.05nH
C1
2
5
100n C1
2
5
100n
R1
7
81
K
R1
7
81
K
1
2
C193 22
0n
C193 22
0n
1 2
R
2
38
0R R
2
38
0R
C1
7
5
10u C1
7
5
10u
1 2
C1
2
1
10u C1
2
1
10u
R185 9.1K R185 9.1K
C198 33p C198 33p 1 2
C14
7
6
.8n
C14
7
6
.8n
1 2
C1
2
8
22
0n
C1
2
8
22
0n
1 2
TP
6
TUNER_3.3 TP
6
TUNER_3.3
1
C135
100n
C135
100n
1
2
C180 18p C180 18p 1 2
C19
7
33p C19
7
33p 1 2
C14
6
4
7
n
C14
6
4
7
n
1 2
R180 510R/1% R180 510R/1%
1 2
R18
7
0R R18
7
0R
C13
2
22
n
C13
2
22
n
L18
22
0nH 1
2
0
mA
5%
L18
22
0nH 1
2
0
mA
5%
1 2
R1
76
0R
R1
76
0R
1
2
U11
TD
A
18
27
3
U11
TD
A
18
27
3
GND S YNT
18
V TUN
19
CP
2 0
XTOUT1
2
1
XTOUT
2
22
C A PREG V CO
1 7
IFP
2
5
GNDIF
26
V
_IF_
A
GC
2
8
V
CCIF
27
IRQ
30
V
_
S
ync
2
9
Test
2
2
3
IFn
2
4
V HF S upply
31
V HFL
3 2
V
CCRF
1
RFin
2
LTO
3
S
TO
4
NC1
5
AS
_M
SS
el
6
GNDDIG1
7
M
a
ster
S
ync
8
FREEZE
9
GNDDIG
2
10
S CL
11
Test1
13
Xt a l
14
S D A
1 2
Xt a lnot
15
V CC S YN
1 6
C a pRF A GC
40
NC 2
39
UHFH
38
UHF S upply
3 7
UHFL
3 6
V CCRF Filter
35
V HFH
34
V HF S ens
33
g
nd
41
R19
2
8
2
0R/1%
R19
2
8
2
0R/1%
1
2
DD1 B
AV
99
DD1 B
AV
99
3
1
2
C13
7
4
7
n
C13
7
4
7
n
1 2
R
2
40
4
7
R
R
2
40
4
7
R
R18
6
10K R18
6
10K
C1
6
1
100n C1
6
1
100n 1 2
C13
6
100n
C13
6
100n
1
2
C
2
04
8
2
P
C
2
04
8
2
P
1
2
C1
72
100n C1
72
100n
1 2