Sony CDX-GT828U Service Manual page 32

CDX-GT828U/GT870US/GT878US
• IC Block Diagrams
IC300 TDA8588AJ/N2/R1 (MAIN Board (1/4))
TAB
1
OUT–FL– 3 2
I C BUS
FL
OUT–FL+ 5
OUT–RL– 7
RL
OUT–RL+ 9
IN–RL 11
S–GND
13
PROTECTION/
DIAGNOSTIC
IN–RR
15
VP
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 ENABLE
LOGIC
ANT–REM SWITCH
27
SWITCH
AMP–REM 29
SERVO3.3V 31
MECH6V 33
VP 35
REFERENCE
VOLTAGE
LOADDUMP BACK-UP
BU+B 37
REGULATOR PROTECTION SWITCH
CDX-GT828U/GT870US/GT878US
IC601 BA8271F-E2 (MAIN Board (1/4))
BUS ON
14 VCC
BUS.ON
1
SWITCH
2 SDA
RESET
RST 2 13 RST
4 SCL
SWITCH
12 BUS.IN
11 CLK-IN
BATTERY
6
VP2
BATT 3 10 B/U-C
SWITCH
8
PGND1
CLK 4
VREF 5
10
SVR DATA I/O 6 9 DATA IN
12 IN–FL
GND 7 8 DATA OUT
14 IN–FR
16
BEEP
18
PGND3
20 VP1
22 STB
24 PGND4
26 RST
28 CRES
30 AUDIO+B
32 GND
34 PANEL+B
36
CBU
IC50 TDA7333013TR (CDX-GT828U only) (MAIN Board (2/4))
BAND PASS
INTERPOLATOR
1
VDDA
2
REF3
3
REF2
RDS
RDSREG
4
REF1 INTN
DEMODULATOR &
SYNCHRONIZATION
CONTROL
VSS 5
6
TM
VDDD 7
RESETN 8
IC401 BD3442FS-E2 (MAIN Board (2/4))
BUS-RCH 1
100k
2
BUS-LCH
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
SINC4 SIGMA DELTA
16 MPX
FILTER FILTER CONVERTER
15 INTN
SDAOUT
RAM
SDAIN 14 CSN
BUFFER TEST LOGIC
2 SCK 13
I C/SPI SA
&
&
SPI
INTERFACE
12 SDA
PIN MUX'S
TESTREG
11 SCL
LOGIC
2
10 XTO
OSCILLATOR
9 XTI
INPUT VOLUME1 TREBLE VOLUME2
GAIN /MUTE /BASS
/MIDDLE
BUS
LOGIC
FADER
EFFECT
FADER
FADER
FADER
FADER
LPF
FADER
SPECTRUM
ANALYZER
VCC2 32 FIL
31 GND
30 SDA
I2C
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