Sony CDX-GT420U Service Manual page 32

CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
Ver. 1.1
• IC Block Diagrams
IC300 TDA8588AJ/N2/R1/M5
(GT420U: AEP, UK, RU/GT424U) (MAIN Board (1/3))
IC300 TDA8588AJ/N2/R1
(GT420U: US/GT427UE/GT470U/GT470US) (MAIN Board (1/3))
TAB
1
OUT–FL– 3
FL
OUT–FL+
5
OUT–RL–
7
RL
OUT–RL+ 9
IN–RL 11
S–GND
13
PROTECTION/
DIAGNOSTIC
IN–RR
15
OUT–RR+ 17
RR
OUT–RR–
19
OUT–FR+ 21
STANDBY/
FR
MUTE
OUT–FR– 23
CHIP DETECT/
DIAGNOSTIC
BATTERY
TEMPERATURE
DIAG
25
DETECTION PROTECTION
ANT–REM SWITCH
27
AMP–REM SWITCH
29
SERVO3.3V 31
MECH6V 33
VP 35
REFERENCE
VOLTAGE
LOADDUMP
BU+B 37
REGULATOR PROTECTION
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
2 SDA
2
I C BUS
4 SCL
6 VP2
8
PGND1
10
SVR
12 IN–FL
14 IN–FR
16 BEEP
VP
18
PGND3
20 VP1
22 STB
24 PGND4
ENABLE
LOGIC
26 RST
28 CRES
30
AUDIO+B
32 GND
34 PANEL+B
36 CBU
BACK-UP
SWITCH
IC50 TDA7333013TR (AEP, UK, RU) (MAIN Board (2/3))
INTERPOLATOR
VDDA 1
REF3 2
3
REF2
RDS
REF1 4 INTN
DEMODULATOR &
SYNCHRONIZATION
VSS 5
6
TM
VDDD 7
8
RESETN
IC401 BD3442FS-E2 (MAIN Board (2/3))
BUS-RCH
1
100k
BUS-LCH 2
INPUT
100k
SELECTOR
TU-RCH 3
100k
TU-LCH 4
100k
CD-RCH
5
100k
CD-LCH 6
100k
AUX-RCH 7
250k
AUX-GND 8
250k
AUX-LCH 9
250k
DS3-L
10
DS1-L 11
DS2-L 12
EBIAS
13
DS2-R 14
DS1-R 15
DS3-R 16
32 32
3
BAND PASS SINC4 SIGMA DELTA
16 MPX
FILTER FILTER CONVERTER
15 INTN
SDAOUT
RAM
SDAIN 14 CSN
RDSREG
BUFFER TEST LOGIC
2 SCK
I C/SPI 13 SA
&
&
SPI
INTERFACE
12 SDA
PIN MUX'S
CONTROL
TESTREG
11 SCL
LOGIC
2
10 XTO
OSCILLATOR
9 XTI
INPUT VOLUME1 TREBLE VOLUME2
GAIN /MUTE /BASS
/MIDDLE
FADER
EFFECT
FADER
FADER
FADER
FADER
LPF
FADER
SPECTRUM
ANALYZER
VCC2 32 FIL
31 GND
30 SDA
I2C
BUS
LOGIC
29 SCL
28 MUTE
VCC 27 VCC
26 OUT-FR
25 OUT-FL
24 OUT-RR
23 OUT-RL
22 SUBOUT-R
21 SUBOUT-L
20 ADJ
19 SAOUT
18 SADA
17 SACLK