Read Sony CDX-GT355 Service Manual online
CDX-GT355
14
14
CDX-GT355
3-2. BLOCK DIAGRAM — MAIN SECTION —
1 ANT
7
6
9
10
8
11
SE2L
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
J901
AUX
TU1
(TUNER UNIT)
POWER AMP
MULTI REGULATOR
IC300
SYSTEM CONTROL
IC501 (2/3)
RESET
IC602
S103
RESET
AUDIO IN SELECT
IC301
Q301
Q300
CN300
8 SE2R
R-CH
BATT
FL
9 SE1L
10 SE1R
4
3
3
10
VCC8.3V
11
VDD5V
15
E2PVDD
13
SCL
14
SDA
6
S-METER
7
TU_MUTE
16
E2PSCL
17
E2PSDA
39 VSM
17 FUNC-SEL
AU+8V
R-CH
R-CH
TU+5V
BU+3.3V
BU+3.3V
12 TUATT
25 EEP_CKO
24 EEP_SDA
24 EEP_SDA
77 RESET
L
R
CD-L
R-CH
R-CH
11 DIFEL
13 DIFFR
R-CH
R-CH
L
R
5
3
3
RR+
RR–
9
7
7
RF+
RF–
29
27
27
SW1
R-CH
SW2
35
VP
20
VP1
6
VP2
BATT
30
37
37
REG1
REG2
31
33
33
REG3
REG4
34
REG5
TU+5V
18
OUTRR1
21
MUTE
2 SDA
AU+8V
U-COM+5V
SERVO+3.3V
MECHA+6V
MECHA+6V
DISP+B
4 SCL
SDA
SCL
16 ACGND
22 STB
25 DIAG
25 DIAG
AU+8V
15
13
7
10
12
11
16
1
9
2
4
3
5
6
22
23
23
SCL
SDA
SCL
SDA
25
SAIN
26
SAOUT
SCL
SDA
44
SA_IN
33
I2C_CKO
34
I2C_SIO
45
SA_CKO
9
VOL ATT
5
BEEP
26
AMPSTB
8
DIAG
54
BUIN
OPEN-MUTE
DOOR SW
SYS RST
BUS ON
UNI CLK
UNI SO
UNI SI
B/U CHECK
A ATT
LINK ON/OFF
73
TESTIN
ATT
12 IN_RR
IN_RF
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
AMP-REM
ANT-REM
ACC
TEST
11
19
OUTLR1
MUTE
Q440
MUTE
Q430
MUTE CONTROL
Q491,492
58
UNISI
59
UNISO
60
UNISCK
87
BUSON
88
SYSRST
10 B/U-C
8 DATA OUT
9 DATA IN
11 CLK-IN
12 BUS.IN
13 RST
3
5
4
7
6
2
1
3
BATT
6
DATA I/O
4
CLK
1
BUS.ON
2
RST
72
ACC_IN
ACC DETECT
Q702
+5V REG
Q3
BU+3.3V
BATT
U-COM+5V
BATT
+3.3V REG
IC502
BATTERY CHECK
Q605
BUS ON
CONTROL
Q601
BUS INTERFACE CONTROL
IC601
MUTE
Q470
TEL-MUTE
74
TELATT
TEL-ATT DETECT
Q701
14
ILL
75
ILLUIN
ILL DETECT
Q703
SCL
SDA
D491
FU601
R-CH
R-CH
16
28
28
OUTLR2
OUTRR2
20
OUTLF
17
OUTRF
R-CH
L
R
REAR
J451
FRONT
AUDIO
OUT
R-CH
L
R
BUS
AUDIO IN
BUS
CONTROL IN
D400
D511
D494
D493
D602
CD
SECTION
A
KEY
SECTION
C
CD
SECTION
B
TH400
CNJ400
8
BATT
LINK ON/OFF
CONTROL
Q600
12
1
OUT
BU+3.3V
2 IN
100
86
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: TUNER (FM/AM)
: AUX
: BUS AUDIO
(Page 13)
(Page 15)
(Page 13)
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