Sony WRR-862A Service Manual page 80

1
2
3
4
5
A B
RX-60 (1/3), CN-2176 (1/2)
FL101
CN1954 CN1953 CN101 R104
R102
CL101 27 27
HF
1 1 1 1 5
IN OUT
FG2 FG3
2
FG1 G1 G2 G3 G4 G5 G6 FG4
2 3 4 5 5 4 3 2 R103
33 9 10 2 3 4 6 7 8 11 12
CN-2176 (1/2)
1 2 1 2
TB101 TB102
* :
Ref No.
C103 L102
Model
CE21/U14 4 pF 39 nH
CE33/U30 4 pF 27 nH
CE62/CE67/
4 pF 18 nH
U62/U67/AU66
C
RX-60 (1/3), CN-2176 (1/2)
. . . . . AF level diagram
[dBu]
+10
+6.0
0
_1.0
_10
_20.4 ( , )
_20.6 ( )
_20
_30
_36.7 (
)
_40 _37.3 (
)
_37.5 ( )
_50
Note :
• The AF level shows the value when the following reference signal is
_60 supplied to the ANT a and b connectors from a FM SSG.
: RF level input 60 dBu, ± 5 kHz deviation at 100 Hz modulation
: RF level input 60 dBu, ± 5 kHz deviation at 1 kHz modulation
_70
: RF level input 60 dBu, ± 5 kHz deviation at 10 kHz modulation
0 dBu = 1 uV (at no load)
_80
0 dBu = _113 dBm (0 dBm = 1 mW, 50Z load)
0 dBm= 0.775Vrms
A B
Tuner 1: IC191-21pin IC601-1pin IC641-1pin
IF-ICDISCRI HEAD AMP De-emphasis
(50 us OUT)
OUT OUT
VCC
FB101
BK1608TS601
IC101
MAX2640EUT-TG069
3.2V
C104
FL102
6
220pF
* * * * *
L102 CH C106 C107 L103 C108
1 4 HF
5 1
OUT IN
FG3 FG2
5
FG4 G6 G5 G4 G3 G2 G1 FG1 R101
C105 3
*
* L104
C103 220pF 2 3.1V
12 11 8 7 6 4 3 2 10 9
CH 0.8V
C106 C107 L103 L104 C108
15 pF 5 pF 12 nH 12 nH 4 pF
15 pF 5 pF 10 nH 10 nH 4 pF
15 pF 3 pF 8.2 nH 8.2 nH 2 pF
8-2 8-2
D E
+9.0 +9.0
+6.0
+6.0
_17.5 (
)
_19.1 ( )
_23.8 ( _23.8 (
) )
_32.2 (
)
_24.1 ( ) _24.1 ( )
_37.8 (
)
_23.6 ( )
_39.6 (
_33.8 ( _34.2 (
) )
_40.5 (
_43.5 (
)
_58.0 (
C D E F G
IC641-7pin IC661-1pin IC671-6pin IC671-7pin
LPF Pre-emphasis Expander De-emphasis
(330 us OUT) (330 us OUT)
OUT OUT
RF_1-A
100
RF_2-A
RF_2-A 2/3
GND
F
+6.0 +6.0 +6.0
Clip level
)
_42.2 (
)
)
_43.2 ( )
_57.3 (
)
)
_58.0 (
)
_59.3 (
)
_77.3 (
)
H J
T1001-1pin CN1901-2pin (CN-2168 board)
Transformer OUTPUT
(Balanced 600 Z)
Priminaly
WRR-862A/862B
G H