Sony CDX-L480N Service Manual ▷ View online
13
13
CDX-L480N
84
85
82
83
16
12
D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
EQ
52
56
DSUB CODE
PROCESS
8
7
6
5
4
3
2
60
50
57
59
31
51
21
22
23
55
54
53
52
I/F
87
86
97
98
LD
DRIVE
Q1
FOCUS
COIL
DRIVE
TRACKING
COIL
DRIVE
SLED
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
LOADING
MOTOR
DRIVE
6
5
23
2
16
15
17
18
13
14
11
12
9
10
26
62 63 64 65
63
62
33
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW3
(LIMIT)
SW2
(SELF)
SW5
(DOWN)
SW1
(DISC IN)
X1
16.9344MHz
OPTICAL PICK-UP
(KSS-721A)
I-V
CONV.
CDL
CDR
CDR
CD PACK
TSTB
STB
AO
CD_TSO
CD_TSI
CD_TCKO
CD_RST
RFOK
INSW
LIMIT
CD_SELFSW
D_SW
CD_L_ LO
CD_LM_EJ
TUNER
SECTION
A
23
24
M
M
M
IC602
B.UP+B
LOUT
ROUT
PACK
TSTB
SI
RFOK
SO
SCK
STB
AO
RST
RESET
A
C
B
D
E
F
PD
LD
A
C
B
D
E
F
PD
LD
LD AMP
FOCUS
COIL
TRACKING
COIL
FD
FSC+
FSC-
TRK+
TRK-
SL-
SL+
SP-
SP+
LD-
LD+
TD
SD
MD
LOAD
EJECT
SYSTEM CONTROL
IC501 (1/3)
RF AMP,DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC1
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING MOTOR DRIVE
IC2
FD
TD
SD
MD
Signal path
: CD
A5V
AU5V
D5V
DR6V
SERVO 5V
MECH6V
+
-
+
-
+
-
1
S702
RESET
RESET
3
2-2. BLOCK DIAGRAM — CD SECTION —
(Page 14)
14
14
CDX-L480N
J1
(ANTENNA)
1 ANT
CDL
CDR
R-CH
3
R-CH
9
RDS
16
9
10
8
MPX
VDD
RDS DEMODULATOR
IC51
SDA
SCL
DAVN
4 OSCO
5 OSCI
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
QUALITY
NS-MASK
NC
BATT
17
19
18
BATT
3
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
5
QUALITY
8
MUTE-CONDITION
7
TU-MUTE
11
TU-VDD
10
VCC(8.3V)
27
87 E2P_SIO
DAVN
85
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
Q22
X51
4.332MHz
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
2-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 13)
15
15
CDX-L480N
2-4. BLOCK DIAGRAM — DISPLAY SECTION —
2-5. CIRCUIT BOARDS LOCATION
LSW904,905,
LSW907-911,
LSW907-911,
LSW913-921
S900-903,906,912
KEY
ACTIVE
Q664
REMOTE
RECEIVE
RECEIVE
IC971
X502
32.768kHz
15
16
12
13
5
18
20
19
4
26
91
98
6
29
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
KEYIN0
DATA
CLK
CE
LCDSO
LCDCKO
LCDCE
KEYIN1
KEY ACK
AD_ON
RCIN1
RCIN0
SIRCS
XIN
XOUT
OSCOUT
OSCIN
X501
18.432MHz
63
64
62
COM1
COM4
LCD
LCD901
PANEL+B
PANEL+B
LSW904,905,907-911,
913-921
LED900-903,906,912,
951,952
913-921
LED900-903,906,912,
951,952
LED931,932
(LCD BACK LIGHT)
D502
D501
52
|
55
|
SEG1
SEG46
|
DI
CL
CE
B.UP+B
KEY
ILLUMINATION
(
)
KEY MATRIX
2
2
I
25
•
27
I
38
•
40
I
49
MAIN board
SERVO board
LIMIT board
SUB (CD) board
tuner unit
(TU1)
(TU1)
DISC IN board
KEY board
LOAD board
IC1
uj
(RFO)
• Waveforms
— Servo Board —
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1
ts
(PACK)
0V
1.8Vp-p
16.9344MHz
IC1
wd
(XTAL)
0V
4
Approx. 620mVp-p
IC1
oa
(FEO)
5
Approx. 200mVp-p
IC1
od
(TEO)
2.4Vp-p
4.8Vp-p
3.4msec
32.768kHz
IC501
qh
(XOUT)
— Main Board —
1
2
3
18.432MHz
IC501
qs
(OSCOUT)
5Vp-p
4.332MHz
IC51
4
(OSCO)
4.5Vp-p
2.3Vp-p
16
16
CDX-L480N
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
14
CN2
2-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 15 for Circuit Boards Location.
: Uses unleaded solder.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
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