2
KDC-W4044UA/W4044UAY/W4044UG/W4044UGY
KDC-W413UA/W413UAY/W4544U/W4644UY
BLOCK DIAGRAM
ELECTRIC UNIT (X34- )
SWITCH UNIT (X16- )
LX-BUS
E-VOL
IC2
A8V
SYSTEM u-COM
BU
Q701-704
PHONE
ACC-DET
Q101
Q103
BU-DET
Q102
SW14V
Q11,12
Q2,3
A8V
SERVO+B
D5
BU5
SW5
BU
PAN5V
RESET IC
IC8
B
CN
RESET
REMOTE
FL
IC1
IC6
IC2
J1
B
AM+B
S1
ED1
J5
MUTE
Q705
J4
W500
A1
SERVO+B
BU5
Q301
BU5
DME1
BU5
SW5
S2
J1
SW5
AM+B
A8V
ANT.
IC7
SW5
E2PROM
SW5
A8V
BU5
SW5
FRONT
J2
PANEL DET
IC1
BU5
SW5
FL+B
IC4
FL+B
J3
BU5
IC10
Q7-10
RDS
DECODER
FRONT-END
CD
MECHA
ROTARY
ENCODER
DRIVER
FL
KEY
ILLUMI
Rx1
1/4W
KEY
MATRIX
1/4W
Rx2
ILLUMI
+B
CD
SERVO
IC
SUPPLY
POWER
DC-CN etc
MUTE
PRE-OUT
IC
POWER
PRE-OUT
DET
SURGE
DC-CN
AUX
D1-17
S3-20
BU5
USB5V
BU5
USB CN
J3
SW+16V
SW5
Q51,52
USB5V
IC51
BU 3.3V
IC53
LEVEL
SHIFT
BU5
BOLERO
u-COM
IC251,252
IC900
BU5
SW
HI-SIDE
iPod
AUTHENTICATION
USB5V
IC950
IC52
2
5
1
BU DET
PHONE
ACC DET
RST
9
5
SW5
9
BU DET
1
2
MUTE
8
R15
1
2
3
SW5
to GND
3
3
1
ROM CORRECTION (NOT USED)
1
1
1
1
1
R61,62
R118
1
FL+B
PS1-1 / PS1-2 / PS1-3
ACC DET / BU DET
PS2-1 / PS2-2
PHONE
REAR/SW
FRONT
PS1-1 / PS1-2 / PS1-3
PS2-1 / PS2-2
P-ANT
P-CON
SP-OUT
PHONE
ACC
B.U.
RST
5
FRONT L/R
REAR L/R
P STBY
16
2
8
8
4
2
2