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Q Q
3 7 6 3 1 5 1 5 0
4-2. BLOCK DIAGRAM — TUNER SECTION —
(Page 24)
CD
SECTION
TUNER UNIT
A
TU601
CNJ600
ANT AM
L
1
18
(ANTENNA)
R-CH
R 16
2
ANT FM
AM DET 12
FM+B 8
FM8V
TU+B 9
TU8V
AM+B 10
AM8V
SEEK 13
SD 20
ST/MONO 22
RV801
S-METER 19
S-METER
WI/NA 24
T E
L
1 3 9 4 2 2 9 6 5 1 3
VT 5
LCL/DX 4
AM IF 11
FM IF 21
VCO 6
X601
10.25MHz
S-METER
15
(RDS)
X602
4.3MHz
AMP
FM DET 23
Q618
FM8V
RDS POWER
TU5V
CONTROL
RDS5V
Q604,605
04
w w w
.
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PJ400
–1
ELECTRONIC
R
R-CH
BUS AUDIO IN
VOLUME
IC401
–2
L
11
PDL
OUT FL
22
CD L-CH
12
CDL
FML
1
OUT RL 20
28
SE3L
MUTE
SE3R
27
Q101
MUTE
26
24
SCL
SUB OUT+ 18
25
SDA
SUB OUT– 17
SYSTEM CONTROL
IC801 (2/3)
TU ATT
ATT 60
62
82
SEEK OUT
X1A 73
83
SD IN
81
ST/MONO
X0A 74
58
VOL ATT
X0 92
S-METER
53
S-METER
Q801
X1 93
WIDE/NARROW
84
WIDE
CONTROL
85
NARROW
Q608,616,617
AMP ON 56
LP OUT
AMP ATT 31
28
SCL 12
71
SCL
5
LCL/DX
SDA 13
70
SDA
TEL ATT 80
14
IF AM
15
IF FM
24
FM IN
TEST 66
AM IN
SSTOP 16
65
SSTOP
25
9
OSC IN
10
OSC OUT
PLL
IC601
RDS DECODER
IC602
20
S METER
SDA 9
FM ON/
68
AM ON
4
XO
SCL 10
MPDH
5
XI
MPTH 2
52
16
FM DET
DAVN 8
67
DAVN
TU ON 69
NOISE
+8V
5
FILTER
1
50
QUALITY
IC603
NOISE
NS MASK
55
CONTROL
Q804
x
a o
u 1 6 3
y
i
– 25 –
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8
MUTE
Q110
SUB LPF
MUTE
IC406
Q111
2
1
3
D402
MUTE
Q403
POWER AMP
IC200
12
MUTE
CONTROL
Q401,402
X801
32kHz
11
X800
3.68MHz
4 22
Q
Q
3
7
6
3
1
Q916
BATT
AM/FM POWER
FM 8V
CONTROL
AM 8V
Q610,612,615
TUNER POWER
+5V REG
TU 5V
CONTROL
Q613
Q603,609
TU 8V
.
2
4
9
9
8
PJ400
–3
L
FRONT
–4
R-CH
R
LINE OUT
–5
L
REAR
–6
R-CH
R
L
SUB OUT
R
CNP501
1
5
FL+
9
FL–
3
2
9
RL+
10
RL–
7
5
1
5
0
8
9
2
4
13
ATT
15
TEST
5
AMP REM
AMP+B
6
ANT+B
ANT REM
7
ACC
ACC
16
BATT
F901
• Signal path
: CD
: FM
: MW
m
c o
– 26 –
CDX-C6850R
2
9
9
9
8
2
9
9
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