Diagrams; Block Diagram -Main Section - Sony CDX-GT48UM Service Manual

Q Q
3 7 6 3 1 5 1 5 0
4-1. BLOCK DIAGRAM – MAIN Section –
R-CH
J901
AUX
PHASE LOCKED LOOP
IC001
L6
FM MIX
J1
4 FMIN1
(ANTENNA)
3 FMIN2
L2
1 AMRFIN
16 XTAL1
X1
4MHz
15 XTAL2
T E
L 1 3 9 4 2 2 9 6 5 1 3
CN701
AU_LCH
20
AU_RCH
22
TXD(MC-BUS)
11
12 RXD(MC-BUS)
28 WAKE UP
Z_MUTE
8
CD_ON
17
18
CDM_ON
3 SYS_RST
CD
25
MECHANISM EJECT_OK
UNIT 7
VBUS ON
(MG-101Y)
(1/2)
19 A_ATT
27 BU CHECK
13
MECHA 8.5V
24
A+3.3V
4
BU_+3.3V
DR_+6V
15
5 TX
RX
4
1 RESET
CN401
CLK IN
2
FLASH
PROGRAMMING
7 FLASH_W
w w w
UART_CLK
3
6 3.3V
CDX-GT48UM/GT480U/GT480US/GT484US
SECTION 4

DIAGRAMS

7 AUX-L
R-CH 9 AUX-R
8 AUX GND
(PLL)
LOUT 8 3 TU-L
4 TU-R
ROUT 9 R-CH R-CH
5 CD-L
R-CH 6 CD-R
I2C-SCK
SCL 18
I2C-SIO
SDA 19
RSSI 14 37 VSM
R-CH
59
60
58
62
27
28
D701
54
BU+3.3V 26
70
61
51
53
78
AUDIO +8.5V
SERVO+3.3V
BU_+3.3V
1
MECHA +6V
S401
RESET
FLASH
PROGRAMMING
BUFFER
Q401,402
x a o
y
BU +3.3V
. i
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ELECTRONIC VOLUME
IC302
R/S OUT-L 31
R/S OUT-R 30 R-CH (REAR/SUB)
ZAPPIN1 13
MUTE
ZAPPIN2 16
Q102
OUT-FL
35
OUT-RL 33
OUT-FR 34 R-CH (FRONT)
OUT-RR 32 R-CH (REAR)
I2C-SCK
SCL 37
I2C-SIO
SDA 38
SACLK 27
SADA 28
SAOUT 29 MUTE DRIVE
Q303,304
SYSTEM CONTROL
IC401 (1/2)
SAIN 38
D309
SAOUT
71
SACLK
72
I2C-SCK
I2C_SCK 23
I2C-SIO
I2C_SIO
22
ZAPPIN
98
Q Q
ATT 31
3 7 6
CD MUTE
EXATT_XEN
47
Q305
BEEP 97
AMPSTB 68
DIAG 69
MC RX
MC TX
WAKE UP
Z-MUTE
CD_ON
CDM_ON
ACC IN 29
RESET
SYSRST
V-BUS ON
BU CHECK 83
CLK IN
MD2
MD0
FLASH EN1
RESET
IC403
VOUT VIN 2 BU +3.3V
BU+3.3V
3
u 1 6 3
15 15
CDX-GT48UM/GT480U/GT480US/GT484US
2 4
8 9 9
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
IC301
12 IN-FL
11 IN-RL OUT-FL+ 5
OUT-FL–
3
MUTE MUTE
OUT-RL+
9
Q104 Q103
OUT-RL– 7
R-CH
D306
BATT
I2C-SCK
4 SCL
I2C-SIO AMP-REM 29
2 SDA
ANT-REM 27
VP 35
VP1 20
VP2 6
D308
BU+B 37
3 1 5 1 5 0 8 9
AUDIO+B 30
SERVO+3.3V 31
MECHA+6V 33
16 BEEP
PANEL+B 34
22 STB
25 DIAG
ACC DETECT
Q805
BACK-UP CHECK
Q802,807,808,
BATT
D806,807
• R-CH is omitted due to same as L-CH.
• Signal Path
: CD
: FM
+3.3V REG
2 B.U +5V
IC402
: AM
: AUX
m
c o
.
2
8 9 9
-1
L
REAR/SUB
-2
J302
R-CH
R
AUDIO
-3
OUT
L
-4 FRONT
R-CH R
CN802
1
FL+
9
FL–
2
RL+
10
RL–
4
FR+
12
FR–
R-CH 3
RR+
11
RR–
5
AMP-REM
6
ANT-REM
BATT
FU601
16
BATT
B.U+5V
2 4 9 8 2 9 9
AUDIO +8.5V
SERVO+3.3V
MECHA+6V
PANEL+B
7
ACC