Block Diagram -Main Section - Sony CDX-GT828U Service Manual

5-1. BLOCK DIAGRAM – MAIN Section –
AUX-RCH
J901
L
AUX
J652 (1/2)
-1
g
L
BUS AUDIO IN -2
R BUS-RCH
J
CD L
CD-RCH
CD R
MUTE CONTROL
SWITCH
A ATT
CD ON
CDM ON
CD Z MUTE
WAKE UP
MECHANISM
EJECT OK
UNIT
SYS RST
(MG-101I)
B/U CHECK
(1/2)
VBUS ON
OPEN REQ
RXD
TXD
DR+6V MECHA+6V
BU+3.3V BU+3.3V
A+3.3V
SERVO+3.3V
TU1
(TUNER UNIT)
L-CH 4
J1
f K
1 ANT
R-CH 3
TU-RCH
(ANTENNA)
AUDIO+8.3V
VCC+8.3V 10
+5V REG
VDD+5V 11
Q3
E2PVDD 15
BU+3.3V
SCL
SCL 13
E2PSCL 16
SDA
SDA 14
E2PSDA 17
6
S-METER
TUN MUTE 7
QUALITY 5
MUTE CON 8
RDS OUT 9
X50
8.664MHz
GT828U
CDX-GT828U/GT870US/GT878US
ELECTRONIC VOLUME
IC401
OUT–RL 23
OUT–RR 24
L
9 AUX-LCH
(REAR)
AUX-RCH 7 AUX-RCH
OUT–FL 25
OUT–FR 26
g
2 BUS-LCH
(FRONT)
BUS-RCH 1 BUS-RCH
SUBOUT–R 22
J
6 CD-LCH
CD-RCH 5 CD-RCH
MUTE
Q405
Q403
SACLK 17
CDON
SADA 18
CDMON
K
4 TU-LCH
SAOUT
ZMUTE 19
TU-RCH 3 TU-RCH
W/U OUT
EJECT OK MUTE 28
SYSRST SCL
SCL 29
SDA
BU IN
SDA 30
VBUS ON
OPEN REQ
CD TX
CD RX
SYSTEM CONTROL
CDMON
16 CDM ON
CDON
49 CD ON
ZMUTE
50 Z MUTE
W/U OUT
45 WAKE UP OUT
K
EJECT OK
47 EJECT OK
CD RX
AUDIO+8.3V 34 CD RX
CD TX
33 CD TX
+3.3V REG
BU+5V
IC301
VBUS ON
65 VBUS ON
OPEN REQ
46 OPEN REQ
23
EECKO
22 EESIO
83 VSM
21 TUNER ATT
NS MASK
19 NSMASK
Q1
82 QUALITY
18 TUNER ATT-IN
RDS DEMODULATOR
IC50
SCL
SCL 11
SDA
SDA 12
16 MPX
INTN 15 17 DAVN
10 XTO
B+ SWITCH
VDDA 1 BU+3.3V
Q50,51
VDDD 7
9 XTI
K K
R-CH
K K
R-CH
K K
E-CLK
E-DATA
MUTE MUTE MUTE
S OUT
Q452 Q440 Q352
D491
MUTE DRIVE
Q491,492
IC303 (1/2)
E-CLK
E-CLK 37
S OUT
SP IN 85
E-DATA
E-DATA 36
SCL
I2C CKO 27
SDA
I2C SIO 28
E-MUTE 35
ATT 25
BEEP 20
AMPSTB 41
AMP DIAG 40
ACC IN 52
ILL DETECT
ILLU IN 51
Q703
TELATT
53
DISPLAY
RESET A
SECTION
(Page 20)
BUS INTERFACE
IC601
D353
SYSRESET 56 13
RST
BUS ON 1
BUS ON 57
12 BUS ON
RST
2
UNI CKO 5 11
CLK IN
BATT
3
BU IN 73
10 B/U-C
CLK 4
UNI SO 3
9 DATA IN
6
DATA I/O
UNI SI 4 8 DATA OUT
DISPLAY
STB B
SECTION
(Page 20)
19 19
J652 (2/2)
-3
K
L
-4
R-CH R
(REAR)
-5
K
L
-6
R-CH R
(FRONT)
-1
K
POWER AMP
-2
MULTIPLE VOLTAGE REGULATOR
IC300
11 IN RF
CN300
1
K
OUT FL+ 5
12 IN RR FL+
9
K
OUT FL– 3 FL–
2
K
OUT RL+ 9
RL+
10
K
OUT RL– 7 RL–
4
FR+
12
FR–
3
R-CH
RR+
11
BATT RR–
5
AMP REM 29
AMP-REM
6
ANT REM 27
ANT-REM
BATT
FU601
16
VP 35
BATT
VP1 20
VP2 6
SDA
2 SDA
SCL
4 SCL
AUDIO+B
30 AUDIO+8.3V
BU+B 37 BU+5V
16 BEEP SERVO+3.3V 31
SERVO+3.3V
MECHA+6V
22 STB 33 MECHA+6V
25 DIAG PANEL+B 34 PANEL+B
7
ACC DETECT
ACC
Q702
14
ILL
13
TEL-ATT DETECT
TEL ATT
Q701
D602
BATTERY
CHECK
BATT
Q605
D603
BATT
BATT
CNJ400
(BUS CONTROL IN)
7
1 4
2 5
3 6
8
• R-CH is omitted due to same as L-CH.
• Signal Path
J
: CD PLAY
K
: FM
f
: MW or AM
L
: AUX
g
: BUS AUDIO
CDX-GT828U/GT870US/GT878US
REAR
AUDIO
OUT
FRONT
CN410
SUB OUT
(MONO)