Table of Contents
Advertisement
CDX-GT250M
Q Q
3 7 6 3 1 5 1 5 0
3-2. BLOCK DIAGRAM — MAIN SECTION —
TU1
(TUNER UNIT)
J1
1 ANT
(ANTENNA)
T E
L
1 3 9 4 2 2 9 6 5 1 3
MUTE CONDITION
w w w
CDX-GT250M
CD
A
CD-L
SECTION
(Page 13)
R-CH
R-CH
J901
AUX
R-CH
AUX
BUFFER
IC901
L-CH
4
R-CH
3
VCC
10
AUDIO+8.3V
TU VDD
11
TU+5V
E2P VDD
15
BU+3.3V
SCL
TU-SCL
13
SDA
TU-SDA
14
S-METER
6
TU MUTE
7
E2P SCL
16
E2P SDA
17
8
QUALITY
5
UNI SI
UNI SO
D512
UNI CLK
CD
B
BUS ON
SECTION
(Page 13)
B/U CHECK
ATT
x
a o
y
.
i
http://www.xiaoyu163.com
8
ELECTRONIC VOLUME
IC401
9 CD LCH
OUT SUB-L
17
8 CD RCH
OUT SUB-R
18
R-CH
R-CH
5 AUX LCH
3 AUX RCH
MUTE
Q481
7 TU LCH
OUT FL
23
6 TU RCH
OUT RL
22
OUT FR
R-CH (FRONT)
25
MUTE
R-CH (REAR)
OUT RR
24
Q441
MUTE
29
SCL
SCL
30
SDA
D479
SDA
31
MUTE DRIVE
Q478,479
SYSTEM CONTROL
IC501 (2/3)
SCL
I2C CKO
33
SDA
D511
I2C SIO
34
39 VSM
VOL ATT
9
12 TU ATT
ATT
86
25 EEP CKO
BEEP
5
24 EEP SIO
AMP STB
Q
Q
26
3
7
6
3
53 TU ATT IN
DIAG
8
38 QUALITY
ACC IN
72
TEST IN
73
D580,581
BATTERY CHECK
BU IN
54
Q580-582
• R-CH is omitted due to same as L-CH.
• Signal Path
: CD PLAY
: FM
58
UNISI
: AM
: AUX
59
UNISO
60
UNISCK
87
BUS ON
u 1 6 3
.
14
14
http://www.xiaoyu163.com
2
4
9
9
8
J330
L
AUDIO OUT
REAR
R
IC2-BUS
CONTROLLED
POWER AMP/
MULTIPLE
VOLTAGE
REGULATOR
IC750
CN601
1
12 IN FL
OUT FL+
5
9
OUT FL–
3
11 IN RL
2
OUT RL+
9
MUTE
10
OUT RL–
7
Q461
4
12
R-CH
3
BATT
11
5
AMP-REM
29
6
ANT-REM
27
BATT
FU601
SDA
16
2 SDA
VP
35
SCL
4 SCL
VP1
20
VP2
6
AUDIO8.3V
30
AUDIO+8.3V
B.UP+B
37
BU+3.3V
16 BEEP
SERVO3.3V
31
SERVO+3.3V
22 STB
MECHA6V
33
MECHA+6V
1
5
1
5
0
8
9
2
4
25 DIAG
PANEL+B
34
PANEL+B
ACCESSORY
7
CHECK
Q631
15
BATT
TU+5V REG
TU+5V
AUDIO+8.3V
Q1
m
c o
2
9
9
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
AMP-REM
ANT-REM
9
8
2
9
9
ACC
TEST
Advertisement
Table of Contents
