CFD-E77L
20
20
6-2.
BLOCK DIAGRAM – TUNER Section –
MW BAND
SELECT SWITCH
Q14
CF2
10.7MHz
FM/AM PLL
IC2
CF4
450kHz
13
L2
FM VCO VOLTAGE
L4
LW VCO VOLTAGE
CT1, L1
FM TRACKING
T1
AM IFT
LOW-PASS
FILTER
: FM
: MW/LW
X1
75kHz
CT3
L1
FM RF
CT1
D1
L4
MW/LW OSC
L2
FM OSC
14
ANT1
FM TELESCOPIC
ANTENNA
17
18
CT5
D2
D3
(1/2)
D3
(2/2)
AM HIGH
CUT
SWITCH
Q12
T1
AM IF
Q43
Q42
Q41
B+
Q41, 42
MW SWITCH
L3-1
MW
L3-2
LW
L3
MW/LW FERRITE-ROD
ANTENNA
MW
TRACKING
CT3, L3-1
LW
TRACKING
CT5, L3-2
Q44
LW
SWITCH
Q43
LW SWITCH
R-DATA
R-CLOCK
R-CE
R-COUNT
R-CH
T2
FM IFT
T2
FM IF
D10
D11
R-DATA, R-CLOCK,
TC POWER
B+
D321
CONSTANT
CURRENT
Q61
R-ch is omitted due to same as L-ch.
SIGNAL PATH
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299