21
21
CDX-F7700/F7705X
3-3. BLOCK DIAGRAM — MAIN SECTION —
1 ANT
ELECTRONIC VOLUME
IC401
J601
(ANTENNA)
TUX501
(TUNER UNIT)
CONTROLLED POWER AMP/
MULTIPLE VOLTAGE REGULATOR
IC201
SYSTEM CONTROL
IC303 (2/3)
CNP101
BATT
R-CH
4
3
10
VCC
11
TU VDD
15
E2P VDD
13
TU-SCL
14
TU-SDA
6
S-METER
7
TU MUTE
16
E2P SCL
17
E2P SDA
8
MUTE CONDITION
AU+8V
TU+5V
BU+5V
L
R
CD-L
R-CH
R-CH
L
R
R-CH
BATT
TU+5V
BATT
AU+8V
BU+5V
CD+3.3V
CD+6V
ILL+B
SDA
SCL
AU+8V
15
13
7
10
12
11
16
1
9
2
4
3
5
6
SCL
SDA
SCL
SDA
SCL
SDA
AMP
IC470
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
AMP-REM
ANT-REM
ACC
TEST
MUTE
Q451
MUTE
Q171
REAR
AUDIO OUT
MUTE CONTROL
Q401,402
RESET
5
4
7
6
2
1
3
ACC CHECK
Q102
TU+5V REG
Q501
BU+3.3V
BATT
BU+5V
BATT
BATT DET
Q101
BUS INTERFACE
IC110
MUTE
Q450
ATT
TEL ATT
Q103
14
ILL
D401
F901
R-CH
L
R
FRONT
AUDIO OUT
R-CH
R-CH
L
R
BUS
AUDIO IN
PJ401
CN401
SUB OUT(MONO)
BUS
CONTROL
IN
D904
D302
D301
D105
SYS RST
LINK OFF
BUS ON
UNI SCK
UNI SO
UNI SI
ATT
BU CHK
TH100
CNP102
8
BATT
LINK ON/OFF
SWITCH
Q111
BU CHECK
DET
Q270,273
BUS ON SWITCH
Q110,112
ILL CHECK
Q907
AMP
IC402
AMP
IC431
MUTE
Q181
GROUND SW
Q408
MUTE
Q470
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: FM
: AM
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