Block Diagram -Main Section - Sony CDX-M9900 Service Manual

3-3. BLOCK DIAGRAM — MAIN SECTION —
CD
SECTION
(Page 20)
L
BUS AUDIO IN
/AUX IN
R R-CH
BUS GND
SWITCH
Q301
TUX201
(TUNER UNIT)
L 4
J201
1 ANT
(ANTENNA) R 3
VCC(TU+8.3V) 10 AUDIO+8.3V
TU VDD(TU+5V) 11 TU+5V
E2P VDD(B/U+5V) 15 BACK UP+5V
SCL
TU SCL 13
SDA
TU SDA
14
AEP,UK,E MODEL
RDS DEMODULATOR
9
RDS 16 MPX
9 OSCI
X201
4.332MHz
10 OSCO
TU+5V
8
MUTE CONDITION
5
QUALITY
S-METER 6
TU MUTE 7
E2P SCL 16
E2P SDA 17
M601
(OPEN/CLOSE)
9 OPEN/CLOSE
7
• R-CH is omitted due to same as L-CH.
• Signal Path
+9V REG
: CD PLAY
IC703
: CD-R/RW(MP3)
BATT 1 VIN
V OUT 3
: FM
ON/OFF
: AM/MW/LW
2
: BUS AUDIO/AUX
SOUND CONTROL,
ELECTRONIC VOLUME
IC301
A
CD-L
42 MDL OUTLR 24 5 LRIN+
R-CH 43 MDR
4 PDL+
OUTLF 25 2 LFIN+
R-CH 7 PDR+
5 PD-
OUTSW
17
OUTRF R-CH (FRONT)
22
R-CH (REAR)
OUTRR 21
40 AML
41 AMR
MUTE
15
SCL
SCL 13
14 SDA
SACLK SAIN
SDA 12
DISPLAY
C
SAOUT 16 SAOUT
SECTION
ATT ON
(Page 22)
SYSTEM CONTROL
IC501 (2/3)
I2C CKO
27 UNI AU
I2C SIO
VOL ATT
AMP ON
IC201
DIAG
SCL
SCL 10
SDA
SDA 9
ACC IN
DAVN 8 46 DAVN(RDS)
ILL IN
VDDA VDDD
14 7 TEL ATT
PARKING
55 MUTE CON
39 QUALITY(RDS)
NS MASK
SWITCH 22 NSMASK
BUIN
Q202
SYS RST
BUS ON
UNICKO
42 VSM
UNISI
23 TU MUTE
UNISO
18 T.ROM SCK
17 T.ROM SDA
3 5 MOT+
MOTOR
4 6 MOT-
DRIVE
IC702
1 6
I-DET
38 FP-IDET
IC701
S601
89 OPEN SW
(OPEN)
S602
88 CLOSE SW
(CLOSE)
4 MOTOR ON
EQ AMP
IC303
LROUT 23
MUTE
Q304
LFOUT 24
MUTE
Q302
MUTE
Q307
MUTE DRIVE
BATT
Q306,308
SDA
SCL
SCL
31
SDA
32
28
ATT 64
30
29
83
85
86
90
BUS INTERFACE
IC601
51 10 BUIN
BATT
3
60
13 RESET
59
12 BUS ON
CLK 4
58 11 CLK IN
DATA I/O 6
56 8 DATA OUT
57 9 DATA IN
BUS ON 1
RST 2
LINK OFF
ATT
BU IN
SYS RST CD
B
SECTION
BUS ON
(Page 20)
UNI SCK
UNI SI
UNI SO
DISPLAY (Page 22)
RESET
D
SECTION
21 21
CDX-M9900/M9905X
CN302
L
AUDIO OUT
REAR
R
R-CH
L
AUDIO OUT
FRONT
R
R-CH
L
SUB
OUT
POWER AMP, R
MULTIPLE VOLTAGE
REGULATOR
IC306
CN801
1
12 IN-RR
FL RR+ 5 FL+
9
FL RR– 3 FL–
11 IN-RF
2
9 RL+
RL RF+
10
7
RL RF– RL–
4
FR+
12
FR–
R-CH 3
RR+
11
RR–
5
2 SDA SW1 29
AMP-REM
6
4 SCL SW2 27
ANT-REM
F901
16
VP 35 BATT
BATT
AUDIO+B 30
AUDIO+8.3V
BU+B 37 BACKUP+5V
SERVO+3.3V 31
SERVO+3.3V
22 STB
MECHA+6V 33 MECHA+6V
25 DIAG
PANEL+B 34
PANEL+9V
7
ACC CHECK
ACC
Q803
14
ILL CHECK
ILL
Q804
13
TEL ATT
ATT
Q805
15
TEST
OVER VOLTAGE
DETECT
BATT
Q603
8 CN601
(BUS CONTROL IN)
4 3
5 2
6 1
BUS ON
SWITCH
7
Q602,605,606
BATT
TH601
TU+5V REG
TU+5V AUDIO+8.3V
Q201
+3.3V REG
BACKUP+3.3V BACKUP+5V
IC401
+3.3V REG
BACKUP+3.3V
IC504