4-2. BLOCK DIAGRAM — TUNER SECTION —
CDX-C6850R
– 25 –
– 26 –
ANT AM
L
R
L
CD L-CH
ANT FM
1
18
R 16
AM DET 12
FM+B 8
TU+B 9
AM+B 10
WI/NA 24
VT 5
LCL/DX 4
AM IF 11
FM IF 21
VCO 6
S-METER
(RDS)
15
FM DET 23
S-METER 19
ST/MONO 22
SD 20
SEEK 13
2
CNJ600
(ANTENNA)
TUNER UNIT
TU601
R-CH
FM8V
TU8V
AM8V
CD
SECTION
A
SE3L
SE3R
SCL
SDA
28
FML
1
CDL
OUT FL
12
22
OUT RL 20
SUB OUT+ 18
SUB OUT– 17
PDL
R-CH
11
27
MUTE
26
24
25
ELECTRONIC
VOLUME
IC401
PJ400
–1
–2
BUS AUDIO IN
2
3
1
SUB LPF
IC406
SYSTEM CONTROL
IC801 (2/3)
TU ATT
ATT 60
X1A 73
X0A 74
62
SEEK OUT
82
SD IN
83
ST/MONO
81
VOL ATT
58
S-METER
53
WIDE
84
NARROW
85
SCL
71
SDA
70
SSTOP
65
X801
32kHz
X0 92
X1 93
AMP ON 56
AMP ATT 31
TEL ATT 80
TEST 66
FM ON/
AM ON
68
TU ON 69
X800
3.68MHz
WIDE/NARROW
CONTROL
Q608,616,617
S-METER
Q801
AMP
Q618
RV801
S-METER
LP OUT
28
LCL/DX
5
IF AM
14
IF FM
15
FM IN
24
AM IN
25
OSC IN
9
OSC OUT
10
S METER
20
XO
4
XI
5
FM DET
16
5
1
SCL 12
SDA 13
SSTOP 16
SDA 9
SCL 10
MPTH 2
DAVN 8
PLL
IC601
MPDH
52
DAVN
67
QUALITY
50
NS MASK
55
X601
10.25MHz
X602
4.3MHz
RDS DECODER
IC602
NOISE
FILTER
IC603
NOISE
CONTROL
Q804
RDS5V
MUTE
CONTROL
Q401,402
D402
MUTE
Q403
MUTE
Q111
MUTE
Q110
12
11
4 22
5
3
POWER AMP
IC200
1
9
9
7
2
10
13
15
5
6
7
16
CNP501
STBY
MUTE
Q916
AMP+B
ANT+B
ACC
BATT
F901
FL+
FL–
RL+
RL–
ATT
TEST
AMP REM
ANT REM
ACC
BATT
PJ400
L
R
SUB OUT
L
R
REAR
R-CH
–6
–5
L
R
FRONT
LINE OUT
R-CH
–4
–3
TUNER POWER
CONTROL
Q603,609
AM/FM POWER
CONTROL
Q610,612,615
+5V REG
Q613
+8V
FM 8V
AM 8V
TU 5V
TU 8V
MUTE
Q101
• Signal path
: CD
: FM
: MW
(Page 24)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
