Read Sony CDX-L490EE Service Manual online
16
16
CDX-L490EE
J1
(ANTENNA)
1 ANT
CDL
CDR
R-CH
3
R-CH
AUDIO 8.3V
TUNER UNIT
TU1
6
S-METER
14
TU-SDA
SYSTEM CONTROL
IC501 (2/3)
67
ACCIN 38
TELATT 40
STB 69
BEEP 35
CD
SECTION
A
3
11
CN601
1
9
FL+
FL-
2
10
RL+
RL-
4
12
13
7
FR+
FR-
15
RR+
RR-
TEST
ACC
ATT
16 +B(BATT)
8 GND
R-CH
F901
10A
TU-ATTIN
NC
BATT
17
19
18
BATT
E2P_CKO
86
VSM
13
TU-SCL
ATT
BATT
68
TESTIN
DIAG
37
2
VOLATT
70
SOUND CONTROL
ELECTRONIC VOLUME
IC401
VCC
NC
16
BUS-LCH
5
CD-LCH
9
TV-LCH
7
SDA
SCL
MUTE
CONT.
EVR
19
I2C_SIO
I2C_CKO
45
47
17
E2P-SDA
16
E2P-SCL
8
MUTE-CONDITION
7
TU-MUTE
11
TU-VDD
10
VCC(8.3V)
87 E2P_SIO
30
TU-ATT
88
R-CH
25
29
AUDIO OUT REAR
-1
L
R
-2
R-CH
J330
5 ANP-R
27
35
37
34
33
31
30
6 ANT-R
BEEP
STB
4
SCL
2
SDA
CONT.
9
7
6
20
POWER AMP
IC750 (1/2)
MULTIPLE VOLTAGE
REGULATOR
IC750 (2/2)
AUDIO 8.3V
VP2
VP1
VP1
• Signal path
: FM
: CD
• R-ch is omitted due to same as L-ch.
12
SYSRST
B.UP+B
24
BUSON 25
UNISI 43
UNICKO 44
UNISO 42
BU IN 28
4
L-CH
OUT
-FL
13
OUT
-RL
12
+5V REG.
Q1
BACK-UP CHECK/
LOW VOLTAGE
CHECK
Q581,582
OVER VOLTAGE
DET.
Q580,D580,581
LINE MUTE
CONTROL
Q478,479
TEL
ATT
ATT
Q651
I2C
BUS
ACC
DETECT
Q631
MUTE
Q441
MUTE
Q461
11
MUTE
TONE
INPUT SELECTOR
EFFECT
5
3
DIAG
AMP-REM
ANT-REM
B.UP+B
PANEL+B
MECH 6V
SERVO 5V
AUDIO 8.3V
B.UP+B
PANEL+B
MECH 6V
SERVO 5V
AUDIO 8.3V
SERVO 5V
AUDIO 8.3V
VP
D759
D760
MUTE
16
22
I2C
BUS
21
20
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 15)
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