BBK LEM1992, Service Manual, Page: 9 / 34

+
V
D
D
3
V
Input R
ippl
e mus
t be under
30mV
p
-p
V2
A
dd N
o
tc
h F
ilt
er C
101=
68pF
,C
102=
47pF
,L114=
220nH
,L11
5=
220nH
,C
133=
120pF
,C
134=
150pF
N
O
T
A
dd N
o
tc
h F
ilt
er C
101=
10nF
,C
102=
10nF
,L114=
N
C
,L1
15=
N
C
,C
133=
N
C
,C
134=
N
C
R
F
E
S
D
/S
1 Fi
lt
er
(F
or
E
N
55020 st
andar
d)
IF
In
te
rfa
c
e
F
ilte
r
S
ingl
e ended:75ohm
NE
A
R
Ho
s
t I
C
AG
C
ᣝ✻݀ᵓ᳈ᬍ
2011-01-11
C
los
e to hos
t IC
L114 220nH/
N
C
L106
150nH
L102
22nH
L116
0R
L101
180nH
L107
0R
L108
5.
6R
L103
47nH
L105
150nH
L104
8n2H
L115
220nH/
N
C
C118
100nF/
X
5R/
16V
C116
27pF/
C
O
G
/50V
C104
4p7F/
C
O
G
/50V
C101
68pF/
C
O
G
/50V/
10nF
C127
39pF/
C
O
G
/50V
C126
39pF/
C
O
G
/50V
C107
100nF/
X
5R/
16V
C105
10pF/
C
O
G
/50V
C115 100nF/
X
5R/
16V
C111
6n8F/
X
5R/
16V
C134
150pF/
X
5R/
50V/
N
C
C103
1nF
C113
1uF
C112
10nF/
X
5R/
16V
C106
10nF/
X
5R/
16V
C102
47pF/
C
O
G
/50V/
10nF
C117
27pF/
C
O
G
/50V
C110
330pF/
X
5R/
16V
C108
2.
2uF/
Y
5V/
16V/
C
0603
C128
4p7F/
C
O
G
/50V
C133
120pF/
X
5R/
50V/
N
C
C129 100nF/
X
5R/
16V
C114
100nF/
X
5R/
16V
C109
100nF/
X
5R/
16V
C130 100nF/
X
5R/
16V
C120 22nF/
X
5R/
50V
12
3
Y101
16M
Hz,
C
L=
16pF
R110
100R
R104
220R
R108
4.
7K
R102
10K R109
100R
R107
4.
7K
R101
1K8
R105
220R
R106
NC
2
O
PEN
_
D
3
AVD
D
4
DE
T
1
5
DE
T
2
6
SC
L
K
7
SDA
8
XTAL _I
18
AVD
D
17
2V
16
AVSS
15
CP
10
DVDD
9
XTAL _O
1
RF
_
L
P
24
RF_ HP
23
AVDD
22
TF1P
21
TF1N
20
TF2P
19
TF2N
25
GN
D
11
DVSS
12
IFP
14
VAG
C
13
IF
P
U102
R620D
D101
BAV99
R103
10k
R112 10k
C902
1.
5nF/
X
5R/
50V
C901 1.
5nF/
X
5R/
50V
C903 1.
5nF/
X
5R/
50V
C904
1.
5nF/
X
5R/
50V
R901
4.
7K
R902
4.
7K
R906
4.
7K
R904
4.
7K
R564
nc
C296
0.1uF
R565
2.2K
R566 NC
CE7
470uF/10V /8 *7
R567 10K
R568 10K
C31
1nF
C32
1nF
CE
1
0
47U
/16V
/6
*7
CE
6
47U
/16V
/6
*7
C185
0.
1uF
R11 330R
R538 330R
Q4
9
3904
Q5
0
3904
R544 10K
CA28
220uF/16V
R1
7
0R
R1
8
0R
Q6
3904
R12
6.
8K
R13 10K
C2
1uF
R10 10K
R14 10K
C5
1uF
R15 NC
R16 NC
+
CA1
100uF/
16V
ADJ
OUT
IN
U1
AM
1117-
ADJ
R31 2.2k
R32 3.3k
C10 2.
2uF/
X
5R/
16V/
C
0603
1
2
3
J1
1
CO
N1
0
2
Tuner
s
h
ie
ld
box
Q2
M
M
B
T3904
R41 200K R42 200K
C11
0.1uF
R43 0R
R44 10K
R45
10K
R46 100K
R47 4.
7K
R48
4.
7K
+
CA3 100uF/
16V
Q3
MM BT3906
Q5 M
M
B
T3904
D12
1N4148
R49
NC
R532
4.
7K
R535 10K
R536 NC
Q4
8
3904
C188
0.
22uF
C189
0.
22uF
C190
100pF
C13
100pF
1
1
2
2
3
3
4
4
CON1
TJC3-
4
A
1
IN1
2
SG
N
D
3
SVR
R
4
OU
T
1
5
PG
N
D
6
OU
T
2
7
VP
8
MU
/S
T
B
9
IN2
10 11 12
13 14 15
16
17 18
U2
8
TP
A
1517/
TD
A
1517
CE
1
8
100u/16V
CE
2
220u/16V
CE
2
1
220u/16V
R546 8.
2k
R548 2.
2K
R549 2.
2K
C43
1uF
1
1 1
C213
0.
1uF
D1
3
S
S
110
CE1 1
220u/16V
R50 330R
CE1
47U/16V /6 *7
R L
1 2 3
4 5
6
7 8
9
J5
C
K
X
-3.
5-
01
L7
3.
9nH
L117
1.
5R
C20 0.
1uF
L1
60R/
100M
HZ/
L0603
L3
1UH/
0603L
L5
1UH/
0603L
L6
2.
2UH/
0603L
L8
2.
2UH/
0603L
C39
56pF
R20
510R
C40
33pF
TUNER_3.
3V
T-
SCL
IF
1
P
IF
1
N
T-
SDA
IF
_A
G
C
VDD3V_
RFB
T_
SCL
T_
SDA
VDD3V_
RFA
VON
VAGC VOP
VDD3V_
RFC
VDD3V_
RFD
VDD3V_
RFB
T_
SCL
TUNER_3.
3V
TUNER_3.
3V
T_
SDA
VDD3V_
RFA
VON
VAGC VOP
VDD3V_
RFC
VDD3V_
RFD
AMP-
AUOUTR0
AMP-
AUOUTL0
PH
_
D
ET
AMP_
R
AMP_
L
+
12V_NO
R
M
A
L
OP_
V
CC
OP
_
V
C
C
AM
P-
L
IN
1
A
M
P
-RIN1
AM
P-
PR
O
U
T
AM
P-
PL
O
U
T
AM
P-
PR
O
U
T
AM
P-
PL
O
U
T
AM
P_
R
AM
P_
L
+
5
V_
NORMAL
VDD_
33
AG
N
D
AG
N
D
+
5
V_
ST
AN
D
B
Y
+
5
V_
STANDBY
+
12V_NO
R
M
A
L
STB_
AMP
+
12V_NO
R
M
A
L
+
5
V_
STANDBY
MUT
E
_
A
MP
AG
N
D
L+
_O
L+
R+
A
M
P
-RIN1
AM
P-
L
IN
1
R+
_
O
AG
N
D
A
M
P
12V
A
M
P
12V
+
12V
_N
O
R
M
A
L
T
UNE
R_
3
.3
V