Read Sony CDX-C6850 Service Manual online
4-3. BLOCK DIAGRAM — MAIN SECTION —
CDX-C6850
– 25 –
– 26 –
-3
L
1
3
19
17
18
3
2
1
1
1
2
18
12
16
13
11
21
20
22
19
83
81
53
9
10
6
6
14
15
25
24
5
4
CNJ600
(ANT)
AM ANT
FM L-CH
FM R-CH
SEEK
AM IF
FM IF
VCO
SD
ST-IND
S-METER
TU+B
FM+B
AM+B
VT
LO/DX
AM DET
FM ANT
TUNER ASSY
TU601
R-CH
R-CH
R-CH
Signal path
: FM
: AM
: CD
: FM
: AM
: CD
CD
SECTION
PJ400
R-CH
R
-1
-2
BUS AUDIO IN
L
11
12
1
28
TONE
22
20
2
7
13
12
ELECTRONIC VOLUME
IC401
26
25
24
PDL
SE3L
SE2L
SE1L
SCL
SDA
MUTE
OUT FL
OUT RL
SYSTEM CONTROL
IC801(2/2)
58
104
14
13
90
61
49
37
101
109
47
48
12
15
60
FM+B
SWITCH
Q610,615
SWITCH
Q901,902
ILL+B REG
Q903
D-BASS
SWITCH
S501
ROTARY
ENCODER
RE501
12
13
16
71
70
65
28
9
PLL
IC601
IF FM
AM IN
SCL
SDA
SSTOP
FM IN
LPOUT
LCL/DX
X601
10.25MHz
29
13
2
10
3
11
4
9
8
6
12
1
22
21
36
76
20
46
79
106
107
BUS INTERFACE
IC803
RST
BATT
CLK
CLK
DATA
BUS ON
RES IN
BATT CHECK
CLK IN
DATA IN
DATA OUT
BUS ON
7
2
5
6
4
BATT+B
D807
LCD DRIVE
IC501
LCD-CE
LCD-CLK
LCD-DATA
LCD501
AMBER LED
SWITCH
Q503,505
GREEN LED
SWITCH
Q504,506
U COM 5V
+B
BATT+B
RESET
IC902
S900
RESET
CNP802
(REMOTE IN)
(REMOTE IN)
KEY MATRIX
LSW512-521,531,532,534-538
(KEY BOARD)
KEY ACTIVE
Q914,915
LED510
LED511
LED511
LAMP
SWITCH
Q502, 505
LSW532, 536
LED501-504
TEL MUTE
SWITCH
Q916
POWER SUPPLY
IC901
AMP ON
VCC
AMP+B
BATT+B
BATT+B
ACC
CHECK
Q905
F901
11
3
12
4
10
2
9
1
13
TEL MUTE
16
BATT
7
ACC
5
AMP REM
6
ANT REM
15
TEST
SCL
X1A
X0A
SDA
SSTOP
SD IN
ST/MONO
S-METER
KEY IN0
SYSRST
UNI CK
UNI SO
UNI SI
UNI SI
BUS ON
BU IN
BU IN
AD ON
KEY ACK
RE IN0
RE IN1
ACC IN
TEL ATT
KEY IN1
KEY IN2
RC IN1
RC IN0
RESET
108 LAMP ON
LCD CKO
LCD SO
DIM
AMBER
GREEN
LCD CE
ANT REM
AMP ATT
BEEP
Q402
ATT
VOL ATT
PW ON
TEST
FLS SI/NOSE1
Q110
Q401
Q111
LINE AMP
IC402
INFL
INRL
OUTFL
OUTRL
12
11
5
3
9
7
POWER AMP
IC200
22 4
FL
RL
MUTE
STBY
-6
REAR
R
-5
L
-4
FRONT
R
R-CH
R-CH
PJ401
PJ400
R-CH
CNP501
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
31
AMP ON 56
111
80
BATT+B
D918
D919
LINE OUT
92
93
X800
4.19MHz
X0
X1
73
74
X801
32kHz
D909
BATT+B
BU CHECK
Q906
ANT REM
SWITCH
Q924,925
66
1
2
4
IF AM
SEEK
10
9 OSC IN
OSC OUT
1
2
3
LP FM
LP HC
LP AM
TU+5V REG
Q613
TU+B
SWITCH
Q603,609
TU+5V
COM+8V
68 FM ON/AM ON
AM+B
SWITCH
Q612
86 HSTX
69 TU ON
8
D910
3
CNP801
(BUS CONTROL IN)
IR
RECEIVER
IC502
Q806
PULL UP 5V
04
24
SIRCS
LED506
(CD WINDOW)
SUB+B
LSW511
LED507
LED507
-3
-4
L
R
Q403
2
3
1
IC406
18
17
SUBOUT+
SUBOUT-
S901
NOSE DET
72
NOSE2
4
LED DRIVE
Q507
COM+B
LSW512-521,531,534,
535,537,538
POWER-ON
41
ANGLE
SWITCH
Q802,803
11
10
7
9
VLCD
VLC1
VLC2
VLC3
VLC3
VLC4
6
VLC5
8
NARROW
SWITCH
Q608,616
24
84
WIDE
SWITCH
Q617
85
WIDE
NARROW
WI/NA
SUB OUT
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