20
20
CDX-GT700D/GT705DX
CDX-GT700D/GT705DX
4-2. BLOCK DIAGRAM — MAIN SECTION —
1 ANT
IN/OUT SELECT,
ELECTRIC VOLUME
IC401
PJ501
(ANTENNA)
TUX501
(TUNER UNIT)
POWER AMP/
MULTIPLE VOLTAGE REGULATOR
IC201
SYSTEM CONTROL
IC303 (2/3)
AMP
IC474
CNP101
PJ401(2/2)
CN401
R-CH (FRONT)
R-CH (REAR)
BATT
4
3
10
VCC
11
TU_VDD
15
E2P_VDD
13
TU_SCL
14
TU_SDA
6
7
S_METER
9
RDS
GT700D
16
TU_MUTE
E2P_SCL
17
E2P_SDA
UNI SO
UNI SI
UNI CLK
ATT
LINK OFF
BU CHK
BUS ON
SYS RST
RESET
STBY
8
5
MUTE_CONDITION
QUALITY
AUDIO+8.3V
TU+5V
BU+3.3V
L
R
GROUND
SWITCH
Q408
R-CH
L
R
R-CH
R-CH
R-CH
BATT
TU+5V
AUDIO+8.3V
B_UP+5V
CD+3.3V
CD+6V
ILL+B
SDA
SCL
GT700D
AUDIO+8.3V
15
13
7
10
12
4
11
16
1
9
2
3
5
6
SCL
SDA
SCL
SDA
D904
RDS
+3.3V
BU+3.3V
D906
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
AMP-R
ANT-R
ACC
TEST
MUTE
Q470
MUTE
Q171
MUTE
Q181
MUTE CONTROL
Q401,402
4
5
6
3
8
7
2
1
ACC CHECK
Q102
TU+5V REG
Q501
BU+3.3V
B_UP+5V
BATT
TH100
BATT
CNP102
(BUS CONTROL IN)
ATT
TEL ATTENATION SWITCH
Q103
R-CH
R-CH
F901
D120
D121
L
R
AUDIO OUT
REAR
L
R
AUDIO OUT
FRONT
L
R
SUB OUT
(MONO)
BATT
14
ILL
ILLUMINATION CHECK
Q907
OVER VOLTAGE
DETECT
Q101
BUS INTERFACE
IC110
RDS DEMODULATOR
IC551
D301
D128
(BUS AUDIO IN)
PJ401(1/2)
BUS ON
SWITCH
Q110,111,112
NS MASK
SWITCH
Q380
SCL
SDA
RDS+3.3V
1
7
X551
8.664MHz
PRE AMP
IC402
RDS B+
SWITCH
Q551,552
D105
D104
LINE AMP
IC470
D401
A-L
SUB
R-CH
RL
R-CH
FL
• Signal Path
• R-CH is omitted due to same as L-CH.
: FM
: MW/LW
: BUS AUDIO