Block Diagram -Main Section - Sony CDX-C880R Service Manual

4-4. BLOCK DIAGRAM — MAIN SECTION —
TUNER UNIT
TU10
IC11
(ANTENNA)
3
1
1 18
AM-ANT L-OUT
2 FM-ANT
R-OUT
16 R-CH
Q17
AM-DET.OUT 12
MUTE
FM+B DRIVE
FM 8V 8 Q16
D12 Q19
+B (FM/AM)
9
10 AM+B
AM 8V
RV10
S-METER
S-METER 19
SD 20
ST-IND 22
RECEIVE/SEEK 13
AM-IFCOUT
11
FM-IFCOUT 21
VCO (FM/AM) 6
LO/DX 4
LPF
VT (FM/AM)
5
Q51
AM 8V
VT
SWITCH
IC12
3
6 5
1 2
7
Q52
NARROW
WIDE/
NARROW 24 CONTROL
Q15
S-METER 15
FM-DET.OUT 23
Q10
X101
4.332MHz
TIR SIGNAL REGISTER
L IN
26
IC102
D.OUT 15 44 D.I/O
D.IN 11
RWCK 2 50 RWCK
WE 16 46 WE
CS 17 40 CS1
TAS 18 37 TAS
SAS 22 SAS
36
SAD 23 39 SADX
XT1
47
X102
4.19MHz
48 XT2
04
CN201
-5 L-CH
BUS AUDIO
42
IN
-6 R-CH R-CH
40
R-CH
39
41
TIR/AM/CSV SWITCH
1
IC104
CD L-CH
CD SECTION
2 1
6
SYSTEM CONTROL
IC501 (1/2)
3
7 5 Q102
Q103
60
TIRPLAY
Q13
5
TUNMUTE
53
VSM
40 SD-IN
4 ST-MONO
1 SEKOUT
PLL
IC10
VOL/
13 IF.IN
SUB
D.OUT 6 25 SI
15 AM.OSC
VOLCE
D.IN 5 26 SO
16 FM.OSC
PLL
SUBCE
CLK 4 27 CKO
9 LO/DX
CE
CE 2 28
18 PD
NARROW 7
SUB
110 EMPH
EMPH
XO ML 116 ML MUTE 65
XI
2
20 1 MD MD
114
LEDON
MC MC
115
CD
SECTION AATT 109 A-MUTE
X10
7.2MHz
2
AF-SEEK
Q14
POWSEL
3
WIDE
RDS MODULATOR
IC101
20 LVIN
MPTH 2 52 MTP
EQ-SEL
16 MPX
DAVN 8 75 DAVN
4 OSCO SDA 70 I2CSIO
9
SCL I2CCKO
10 71
5 OSCI
TIR CONTROL
IC103
DISPLAY SECTION
AOUT
4
S-OUT
18
TELMUTE
D0 1 82 D0
ADPCM/
TESTIN
DAC
D3 4 85 D3
BUSY 5 95 BUSY
CE 56 98 CE
ACCIN
TIR
RD 55 RD
101
WR 54 96 WR
RESET 53 99 RES
POWON
PDWN 35 100 PDOWN
FM-ON
CE 11 97 CE
TU-ON
– 35 –
ELECTRONIC VOLUME
IC202
33 32 VOL 31 30 TONE
21 16 22
ELECTRONIC VOLUME (SUB)
SWITCH (SUB) IC204
IC201
11
14 13 20 15
15
B A
9 10
9 8 7
CKO 67
SO 66
64
68
VOL
CONTROL
Q203
SW1 61
SW0 62
D201 MUTE
CONTROL
Q205, 206
118
BEEP
BZ501
BEEP 15 DRIVE
BEEP
Q502
ON
SW502
56
(POWER SELECT)
OFF
SW201
(LINE OUT/IN)
IN OUT
57
ILLIN 78
79
58
REG
BU5V 3
D607
ACC IC603
81 CHECK ACC
Q608
120
6
7
LINE DRIVER
IC207
FNTO1
24 2 13
Q207
(LINE OUT/IN)
26 25
OUT
23 7 12
REO1
17
5 7
VREF (L)
Q208
3 1
VREF (R)
REF VOLTAGE
IC206
Q201
POWER AMP
LINE DRIVER (SUB)
GND
IC205
ISOLATION
IC209
7 12
13 1
12
Q215
GND ISOLATION
IC210
1
13
11
Q214
MUTE
CONTROL
Q211
AMP REM
AMP+B CONTROL
Q601, 602
8.5V REG
TU 8.5V
Q12
5V REG
TU 5V
ANT+B
Q11
B+ SWITCH
RDS 5V
Q101
FM 8V
D602
ILL
CHECK
Q604
Q622
POWER SUPPLY
IC602
1 BATT
BATT
FM8V 11 FM8V
AM8V 10 AM8V ANT+B
COM8V 9 COM8V ANT+B 8
4 STB VCC 7 BATT
3 MODE1
2 MODE2
AMP+B 6 AMP+B
– 36 –
CDX-C880R
-1 L CN201
FRONT
R-CH -2 R
LINE
SW201
OUT/IN
IN
-3 L CN201
REAR
R-CH -4 R
-1 L CN203
EQ OUT
R-CH -2 R
-1 L CN202
SUB OUT
R-CH -2 R
IC211
CN601
1
5 FL+
9
3 FL-
2
9 RL+
10
7 RL-
4 22
4
FR+
12
FR–
R-CH 3
RR+
11
RR–
5
AMP REM
14
ILL
13
ATT
15
TEST
7
ACC ACC
16
BATT
F901
6
ANT REM
Signal Path
: FM
: MW
: CD