23
23
HCD-EC70
HCD-EC70
6-2. BLOCK DIAGRAM — TUNER SECTION —
: TUNER(FM)
: TUNER(AM)
• Signal Path
5
11
25
7
1
31
8
3
26
27
28
18
16
17
15
19
20
AM RF-IN
AM-OSC
36 FM RF-IN
34 FM RF-OUT
FM-OSC
32
FM/AM
ANTENNA
L851
D851
L852
AM OSC
L804
FM RF
D802
D803
L805
FM OSC
CF802
10.7MHz
L803
PD
LP-IN
LP-OUT
DO
DI
CL
CE
X801
75kHz
XIN
XOUT
AM-MIX
FM-MIX
FM-DET
AGC
AM IF-IN
FM IF-IN
12
13
L-OUT
R-OUT
IC801
AM/FM IF AMP,
MIX, MPX, DET, OSC
FM/AM PLL
TU-DO
TU-DI
TU-CE
TU-CLK
TU-ANSD
MAIN
SECTION
(Page 24)
B
TUNER
R-CH
R-CH
TUNER
L-CH
L-CH
CNP802
3
1
FM FREQUENCY
COVERAGE
AM FREQUENCY
COVERAGE
AM TRACKING
FM DETECTOR
FM TRACKING
CF803
450kHz
TU-DI
TU-CE
TU-DO
TU-ANSD
+9V
VM9V
VM9V
+3V
+5V
TU-CLK
L806
Q801
Q802
+3V
REG
+5V
REG
R832
