Sony CDX-GT740UI / CDX-GT747UI / CDX-GT790UI Service Manual ▷ View online
CDX-GT740UI/GT747UI/GT790UI
29
• IC Block Diagrams
IC300 TDA8588AJ/N2/R1 (MAIN Board (1/4))
IC601 BA8271F-E2 (MAIN Board (1/4))
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT–FL–
OUT–FL+
OUT–RL–
OUT–RL+
IN–RL
S–GND
IN–RR
OUT–RR+
OUT–RR–
OUT–FR+
OUT–FR–
DIAG
SW2(ANT–REM)
SW1(AMP–REM)
REG3(SERVO)
REG4(DR+B)
VP(REG)
REG(BU5V)
SDA
SCL
VP2
PGND3
SVR
IN–FL
IN–FR
AC GND
PGND2
VP1
STB
PGND1
RST
CRES
REG1(AUDIO+B)
GND(REG)
REG5(ILL)
CBU
FL
RL
RR
VP
FR
I
2
C BUS
1
2
3
4
5
6
5
6
7
8
9
10
14
13
12
11
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
GND
VCC
RESET
BUS ON
CLK IN
B CHK
BUS ON
CLK IN
B CHK
DATA IN
DATA OUT
DATA I/O
CDX-GT740UI/GT747UI/GT790UI
30
IC50 TDA7333013TR (AEP, UK, RU model) (MAIN Board (2/4))
IC1 TEF6607T/V4/S470,518 (MAIN Board (2/4))
AMRFIN 1
AMRFDEC 2
FMIN2 3
FMIN1 4
LOUT 8
ROUT 9
MPXOUT 13
RSSI 14
XTAL2 15
XTAL1 16
GNDAUD 10
GNDRF 5
VCC2 6
AMRFAGC 7
AMIFAGC2 11
MPXIN 12
AMSELOUT2
32
AMSELOUT1
31
AMIFAGC1
30
AMSELIN2
29
PLL
25
VCODEC
24
VREF
20
SDA
19
SCL
18
GNDD
17
GND
23
AMSELIN1
28
TEST
27
PLLREF
26
VCC1
22
VREGSUP
21
AM
TUNER
FM
TUNER
OUTPUT
PLL
TUNING
SYSTEM
I2C BUS
POWER
SUPPLY
STEREO DECODER
HIGH CUT
SOFT MUTE
NOISE BLANKER
SIGNAL
IMPROVEMENT
CONTROL
BANDWIDTH
CONTROL
VDDA
INTERPOLATOR
RAM
BUFFER
&
CONTROL
LOGIC
TEST LOGIC
&
PIN MUX'S
I
2
C/SPI
INTERFACE
BAND PASS
FILTER
SIGMA DELTA
CONVERTER
SINC4
FILTER
REF3
REF2
REF1
VSS
VDDD
RESET
TM
1
MPX
16
CSN
SDAOUT
RDSREG
3
INTN
MPX
SINC4REG
SDAIN
SCK
SCK
SPI
TESTREG
TESTREG
14
2
3
4
5
6
7
8
INTN
15
SA
13
I2C_SIO
12
I2C_SCK
11
OSCILLATOR
XT0
10
XT1
9
RDS
DEMODULATOR &
SYNCHRONIZATION
2
CDX-GT740UI/GT747UI/GT790UI
31
IC401 BD3447AFV-E2 (MAIN Board (2/4))
21
22
29
30
23
24
40
FIL
GND
I2C_SDA
I2C_SCL
OUT_FRCH
OUT_FLCH
OUT-RRCH
OUT-RLCH
OUT_SRCH
OUT_SLCH
SA_OUT
SA_DA
MIN1
MIN2
EBIAS2
DS2_R
DS1_R
DS3_R
SA_CLK
39
38
37
VCC(8.5V)
36
27
28
25
26
31
32
33
34
35
20
19
12
11
18
17
1
BUS_RCH
BUS_LCH
TU_RCH
TU_LCH
CD_LCH
AUX_RCH
AUX_GND
AUX_LCH
PD_R
PD_G
PD_L
FP1
FN2
FP2
EBIAS1
DS2_L
DS1_L
DS3_L
FN1
2
3
4
CD_RCH
5
14
13
16
15
10
9
8
7
6
I2C BUS
LOGIC,
VCO
FADER
FADER
FADER
HPF
LPF
GND
ISO AMP
GND
ISO AMP
180o/0o
3 BAND P-EQ (TONE CONTROL)
7 BAND
SPECTRUM ANALYZER
/LEVEL METER
EFFECT
VOLUME/MUTE
INPUT GAIN
INPUT SELECTOR (3 SIGLE-END AND 3 STEREO IS O)
FADER
FADER
SPEANA
LVL METER
LVL METER
SPEANA
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
CDX-GT740UI/GT747UI/GT790UI
32
IC462 NJM2792V(TE2) (MAIN Board (2/4))
1
2
3
6
5
4
17
18
19
20
7
10
15
16
12
11
14
13
8
9
LIFT AMP
LIFT AMP
CIN (L)
OUT (RL)
RL-
RL+
VCC
RR+
RR-
OUT (RR)
CIN (R)
GND (R)
COUT (R)
OUT (FR)
FR-
FR+
REF
FL+
FL-
OUT (FL)
COUT (L)
GND (L)
SIGNAL AMP
FRONT-RIGHT
REAR-RIGHT
FRONT-LEFT
REAR-LEFT
SIGNAL AMP
SIGNAL AMP
SIGNAL AMP
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