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)
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
NC
BATT
17
19
18
BATT
13
TU-SCL
BATT
SOUND CONTROL
ELECTRONIC VOLUME
IC401
NC
17
E2P-SDA
16
E2P-SCL
8
7
11
10
R-CH
AUDIO OUT REAR
-1
L
R
-2
R-CH
J330
5 ANP-R
6 ANT-R
POWER AMP
IC750 (1/2)
AUDIO 8.3V
• Signal path
: FM
: CD
• R-ch is omitted due to same as L-ch.
B.UP+B
4
L-CH
+5V REG.
Q1
BACK-UP CHECK/
LOW VOLTAGE
CHECK
Q581,582
OVER VOLTAGE
DET.
Q580,D580,581
LINE MUTE
CONTROL
Q478,479
MUTE
Q441
MUTE
Q461
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 15)
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2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299