Sony CDX-GT550 User Manual
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18
CDX-GT50W/GT500/GT500EE/GT550
CDX-GT50W/GT500/GT500EE/GT550
3-2. BLOCK DIAGRAM — MAIN SECTION —
1 ANT
ELECTRONIC VOLUME
IC401
J300
(ANTENNA)
TU300
(TUNER UNIT)
IC2-BUS CONTROLLED POWER AMP
/MULTIPLE VOLTAGE REGULATOR
IC150
SYSTEM CONTROL
IC711 (2/3)
CN100
BATT
R-CH
4
3
3
10
VCC+8.3V
11
VDD+5V
15
E2P VDD
13
TU-SCL
14
TU-SDA
6
S-METER
7
TU MUTE
16
E2P SCL
17
E2P SDA
AUDIO+8.3V
TU+5V
BU+3.3V
BU+3.3V
AEP,UK MODEL
8
MUTE CONDITION
5
QUALITY
RDS OUT
L-CH
R-CH
AUX
SELECT
SWITCH
Q200
R-CH
R-CH
L
R
R-CH
BATT
TU+5V
AUDIO+8.3V
BU+5V
SERVO+3.3V
MECHA+6V
MECHA+6V
PANEL+B
SDA
SCL
AUDIO+8.3V
15
7
10
12
11
16
1
9
2
4
3
5
6
SCL
SDA
SCL
SDA
SCL
SDA
SDA
UNISO
RESET
BUS ON
UNICLK
UNISI
B/U CHECK
LINK OFF
ATT
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
AMP-REM
ANT-REM
ACC
TEST
MUTE
Q204
MUTE DRIVE
Q250,251
NS MASK
CONTROL
Q300
RDS DEMODULATOR
IC350
ACCESSORY
CHECK
Q500
BUS ON
SWITCH
Q453
LINK
SWITCH
Q454
TU+5V REG
Q301
BU+3.3V
BU+5V
ILLUMINATION CHECK
Q510
13
TEL-MUTE
14
ILL
D252
D250
F901
(L)
(R)
6
5
4
3
1
2
8
7
BATT
BATT
BATTERY CHECK
Q455
BUS INTERFACE
IC450
D453
CNJ450
TH450
BUS
CONTROL
IN
D457
SCL
BU+3.3V
SDA
TEL ATTENATION
CHECK
Q520
RDS POWER
CONTROL
Q350
9
X350
8.664MHz
R-CH
R-CH
L
R
MUTE
Q205
MUTE
Q201
REAR
FRONT
R-CH
CD-L
BATTERY CHECK
AUDIO
OUT
J200
(2/2)
(2/2)
R-CH
L
R
BUS
AUDIO
IN
J200 (1/2)
SUB
AUDIO
OUT
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: FM
: AUX
: AM/MW/LW