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Q Q
3 7 6 3 1 5 1 5 0
4-1. BLOCK DIAGRAM — MAIN SECTION —
BUS
AUDIO
IN
CD
MECHANISM
UNIT
(MG-101TA)
J901
AUX
T E
L
1 3 9 4 2 2 9 6 5 1 3
J1
(ANTENNA)
w w w
CDX-GT315C
SECTION 4
DIAGRAMS
J652 (1/2)
ELECTRONIC VOLUME
L
R
BUS-RCH
2 BUS-LCH
BUS-RCH
1 BUS-RCH
CD L
6 CD-LCH
CD R
CD-RCH
CD-RCH
5 CD-RCH
CDON
CD ON
9 AUX-LCH
CDMON
CDM ON
AUX-RCH
7 AUX-RCH
ZMUTE
Z MUTE
4 TU-LCH
TU-RCH
3 TU-RCH
SYSRST
SYS RST
A ATT
A ATT
B/U CHECK
B/U CHECK
BUSON
BUS ON
LINKOFF
LINK OFF
UNISO
UNI SO
UNISI
UNI SI
UNICLK
UNI CLK
DR+6V
MECHA+6V
BU+3.3V
BU+3.3V
A+3.3V
SERVO+3.3V
D+3.3V
AUX R-CH
TU1
(TUNER UNIT)
L-CH
4
1 ANT
R-CH
3
TU-RCH
AUDIO+8.3V
VCC
10
TUNER+5V
VDD+5V
11
REG
AUDIO+8.3V
Q3
BU+3.3V
15
REG
BU+5V
E2PVDD
IC681
BU+3.3V
SCL
TU-SCL
13
SDA
TU-SDA
14
S-METER
6
TU MUTE
7
E2P SCL
16
E2P SDA
17
NOISE MASK
SWITCH
Q1
QUALITY
5
MUTE CON
8
RDS DEMODULATOR
IC50
SCL
SCL
11
SDA
SDA
12
16 MPX
RDS OUT
9
INTN
15
RDS+3.3V
10
XTO
X50
VDDA
1
SWITCH
8.664MHz
Q50
VDDD
7
9
XTI
AEP,UK MODEL
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IC401
SUBOUT-L
21
SUBOUT-R
22
R-CH
OUT-FL
25
OUT-RL
23
OUT-FR
26
R-CH(FRONT)
OUT-RR
24
R-CH(REAR)
MUTE
28
SCL
SCL
29
SDA
MUTE CONTROL
SDA
30
A ATT
SYSTEM CONTROL
IC501 (1/2)
CDMON
SCL
92 CDMON
I2C SCK
33
CDON
SDA
91 CDON
I2C SIO
34
ZMUTE
61 Z MUTE
Q
Q
VOLATT
9
3
7
6
100
ATT
BEEP
5
AMPSTB
8
DIAG
7
ACCIN
99
TELATT
98
TESTIN
97
96
BUSON
UNISCK
60
39 VSM
BUIN
54
12 TUATT
UNISI
58
25 EEP CKO
UNISO
59
24 EEP SIO
D609
SYSRST
88
13 NSMASK
D353
38 QUALITY
53 TU ATTIN
56 DAVN
BU+3.3V
RESET
26 RDS ON
u 1 6 3
19
19
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2
4
8
9
9
MUTE
Q432
I2C BUS CONTROLLED POWER AMP/
MULTIPLE VOLTAGE REGULATOR
IC300
12 IN FL
OUT FL+
5
OUT FL–
3
11 IN RL
OUT RL+
9
MUTE
MUTE
OUT RL–
7
Q440
Q470
D491
SWITCH
BATT
Q491,492
AMP REM
29
ANT REM
27
D493
VP
35
BATT
SDA
2 SDA
SCL
4 SCL
AUDIO+B
30
AUDIO+8.3V
BU+B
37
BU+5V
16 BEEP
SERVO3.3V
31
SERVO+3.3V
3
1
5
1
5
0
8
9
22 STB
MECHA6V
33
MECHA+6V
25 DIAG
PANEL+B
34
PANEL+B
ACCESSORY CHECK
Q702
AEP,UK MODEL
TELEPHONE ATTENATION
CHECK
Q701
BUS INTERFACE
IC601
12
BUS IN
D602
BATTERY
11
CLK IN
BATT
3
CHECK
BATT
10
B/U-C
Q605
8
DATA OUT
9
DATA IN
CLK 4
DATA I/O
6
13 RST
BUS ON
SWITCH
BUS ON
1
Q601
RST
2
LINK OFF
SWITCH
Q600
LINKOFF
DISPLAY
A
SECTION
m
(Page 20)
c o
.
CDX-GT315C
2
8
9
9
J652 (2/2)
L
AUDIO OUT
REAR
R-CH
R
CN300
1
FL+
9
FL–
2
RL+
10
RL–
4
FR+
12
FR–
3
R-CH
RR+
11
RR–
5
AMP-REM
6
ANT-REM
F901
16
BATT
2
4
9
8
2
9
9
7
ACC
13
TEL ATT
15
TEST
TH400
BATT
7
CNJ400
BUS
4
1
CONTROL IN
5
2
6
3
8
• R-CH is omitted due to same as L-CH.
• Signal Path
: CD PLAY
: FM
: AM/MW/LW/SW
: AUX
: BUS
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