– TUNER SECTION – (EE, CIS MODEL)
STEREO
TUNED
MUTE
ST-CE
COM-DIN
COM-CLK
COM-DATA
TM1
ANTENNA
FM 75
Ω
COAXIAL
AM
ANT IN
IF OUT
F OUT
VT
FE1
FM FRONT END
ST +10V
IF AMP
Q1,2
IF AMP
Q3,4
CF1
10.7MHz
CF2
10.7MHz
CF3
10.7MHz
1
FM IN
5
3
2
26 25 24 23
22
21 20
17
16
15
14
13
12
4
27
6
Q12
MW SW
Q14
LW SW
Q13
MW SW
Q11
MW SW
11
LW SW
Q9
REG
29 AM OSC
AM RF IN
FM
FM OSC
PD1
MW
MW
RV42
FM
TUNED
LEVEL
3
4
5
6
30
14 15 11
FM SD
AM / FM
VCO STOP
IF BUFF MUTE
23
9
5
13
12
2
AM
SD
AM
SD
AM MIX
AM IF
IFT41
X42
450KHz
X43
456KHz
X41
10.7MHz
TUNED
LEVEL
AM
PEAK ADJ
L1701
CT1701
RV1701
TP1701
(FILTER)
SUB CARRIER
RV41
MPX IN
AM / FM
8
5
9
4
3
7
STEREO
TUNED
FM / AM MPX
IC1702 SWITCH
IC41
24
22
OUT R
RCH
L IN
L OUT
R CH
POLA
L IN
21
AMP IN L
OUT L
LPF
20
18
14
7 2 12 8
1 24
AM OSC
FM
VCO STOP
FM / AM IF
IF REQ
X IN
X OUT
CE
DI
CL
DO
AMP OUT L 16
A MAIN SECTION
(page 47)
PLL
IC21
FE2
MW / LW FRONTEND
•
R CH :Same as L CH
•
SIGNAL PATH
:FM
:MW
:LW
X21
4.5MHz
AM IF
DET
VCO
Q5
68
67
65
66
72
69
70
11
LEVEL ADJ
SUB CARRIER
2
3
IN
20
19
GATE
WAVE
FORM
14
S&H
BUFFER
PHASE
COMP.2
TRIGGER
10
9
MUTE
OSC
1/2
1/2
PHASE
6
7
19
18
IC1701 POLAR DECODER
R CH
TP1702
(VCO)
PHASE
COMP.1
RV1702
VCO
Q1702
SW
13
FM LOW
Q1703
SW
+7V
Q1701
SW
B MAIN SECTION
(page 48)
– 43 –
– 44 –
www . x ia o y u 1 6 3 . c o m
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2
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9
4
2
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8
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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
