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SECTION 6
DIAGRAMS
HCD-N455KW
6-1. BLOCK DIAGRAMS
—TUNER SECTION—
TM1
ANTENNA
ANT IN
ST +10V
Q5
F OUT
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1, 2
IF AMP
Q3, 4
CF2
10.7MHz
1 FM IN
4
29
REG
AM OSC
FM/AM MPX
IC2
B+
RF OUT
27 AM RF IN
ANT IN
VT
09
FM OSC
PLL
IC1
15 11
30
14
2
12
14
7
8
13
X43
450kHz
FM SD
AM/FM
VCO STOP
IF BUFF
AM
SD
AM
TUNED
LEVEL
12
RV42
2
AM IF
IFT41
5
9
23
AM IF
DET
VCO
ST LED
TU LED
8
7
X41
456kHz
X42
10.7MHz
MUTE
STEREO
TUNED
24
22
AM/FM
MPX IN
20
OUT L
18 AMP IN L
L 16
ST L
4
5
3
6
ST CE
COM DIN
COM CLK
COM DATA
A
MAIN
SECTION
AM OSC
FM
VCO STOP
IF
IF REQ
X IN
X OUT
CE
DI
CL
DO
1 24
X21
4.5MHz
FE2
AM FRONT END
AM MIX
AM
SD
F OUT
FM 75
Ω
21
OUT R
R-CH
AM
FM
TUNED
LEVEL
RV41
3
7
9
13
14
• R-CH: Same as L-CH
• SIGNAL PATH
: FM
: AM
(Page 21)
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