Sony CDX-757MX Service Manual ▷ View online
CDX-757MX
21
21
9 SDO
12 SDIO
13 BCKIA
14 LRCKIA
62 X1
63 X0
60 XRDE
B
A
C
D
SDO
SDI
BCK
LRCK
TCXRDE
XTAL-IN
CD-ROM DECODER
MP3 DECODER
IC601
IC605
39
REQ
19
STANBY
1
RESET
5
I2C SDA
6
I2C SCL
73
DECINT
3
DECSTBY
2
DECXRST
80
SDA
81
SCL
IC604
18
DAC-DATA
19
DAC-CLK
20
DAC-LAT
16
CE
43
WR
17
OE
30 CS1
5 WE
32 OE
20
−
13, 3, 2, 31, 1,
12, 4, 11, 7, 10
3, 4, 7, 10, 11, 15,
38
−
36, 34
−
31, 41,
42, 45, 44
46, 47, 49
−
51,
53
−
55
21
−
23, 25
−
29
IO1
−
IO8
A0
−
A16
AD0
−
AD16
IO0
−
IO7
2
DATA
1
BCK
3
LRCK
SERIAL
INPUT
INTERFACE
13
MC
14
15
ML
FUNCTION
CONTROL
INTERFACE
MD
SCK
16
SYSTEM
CLOCK
MANAGER
8 TIME OVER
SAMPLING
DIGITAL FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELATA-SIGMA
MODULATOR
D/A
CONVERTER
OUTPUT AMP
AND
LOW-PASS
FILTER
7
VOUTL
10
VCOM
VOUTR
SYSTEM
CLOCK
DIGITAL FILTER,
D/A CONVERTER
IC501
S-RAM
IC602
MC
ML
MD
LOW-PASS
FILTER
IC401
MUTING
Q410, 420
8
MUTING
CONTROL
SWITCH
Q402
26
MUTE
MD
MC
ML
SYSTEM CONTROLLER
IC201 (2/3)
31
PCTX
4
3
2
32
PCRX
68
FL BOOT
CN201
(FOR PC)
AUDIO OUT
CN901 (1/2)
L
R
SIGNAL PATH
: CD PLAY
(Page 20)
(Page 20)
(Page 20)
(Page 20)
6-2.
BLOCK DIAGRAM – MAIN Section (1/2) –
CDX-757MX
22
22
RESET
SWITCH
7
DATA
CLK
BUSON
RST
5
4
6
2
B. UP
CONTROL
CN901 (2/2)
52
MCK
50
EHS
53
VREF
EVON
RV201
ELEVATOR HEIGHT
(ADDRESS)
RV202
ELEVATOR HEIGHT
SENSOR
30
+8V
REGULATOR
IC304
DRIVER +8V
BUCHK 92
BATTERY
CHECK
Q301, 302
D306
59
CDON 29
EJECT 75
B. UP +3.3V
BUS INTERFACE
(FOR SONY BUS)
IC302
+5V
REGULATOR
IC305
+3.3V
REGULATOR
Q303, 304
SERVO +5V
SW801
72 MGLK-SW
36 ELVF
37 ELVR
SW201
MAGAZINE
DETECT
ON : When magazine
is set
is set
3
4
9
7
MOTOR
DRIVE
IN1
IN2
OUT1
OUT2
ELEVATOR
MOTOR DRIVE
IC301
M
M104
(ELEVATOR)
SYSTEM CONTROLLER
IC201 (3/3)
RES
10
6
9
11
4
1
12
13
2
8
7
SO
SI
SCK
BUSON OUT
BUSON OUT
RESET
DATA
14
CLK
LOF
BUSON IN
RST
77
76
78
91
65
SI
SO
SCLK
BUSON
VCC
RESET SIGNAL
GENERATOR
IC303
PS901
79
82
EEDATA
EECLK
5
6
SDA
SCL
EEPROM
IC202
+3.3V
REGULATOR
IC306
SERVO +3.3V
EXTAL
63 XTAL
X201
12.288MHz
+2.5V
REGULATOR
IC603
CD-ROM/MP3
DECODER
(IC601)
B+
6-3.
BLOCK DIAGRAM – MAIN Section (2/2) –
CDX-757MX
23
23
6-4.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from CD changer controller.
• Voltages and waveforms are dc with respect to ground in
CD play conditions.
no mark : CD PLAY
no mark : CD PLAY
∗
: Impossible to measure
• 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.
J
: CD PLAY
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
• Circuit Boards Location
SWITCH board
JACK board
LSW board
RF board
MAIN board
CDX-757MX
24
24
6-5.
PRINTED WIRING BOARDS – RF/LSW Boards –
•
See page 23 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
IC101
H-6
IC201
J-5
Q101
F-7
Q102
H-7
C201
C121
C105
SW1
CHUKING
END DETECT
SW2
SAVE END
DETECT
CN102
IC201
C102
Q101
TP101
TP102
TP108
TP107
TP104
TP103
TP105
TP106
IC101
C217
C203
C204
C205
C206
C207
C208
C202
C106
C209
C109
C104
C122
C107
C111
C101
R201
R202
R203
R204
R206
R205
R207
R208
R210
R209
R211
R212
R214
R213
R218
R219
R220
R222
R223
R104
R215
R216
R108
R109
R110
R117
R112
R113
R107
R105
R101
R103
R102
C103
R120
R121
R122
R106
C108
Q102
CNJ101
SW3
(LIMIT)
BLU
YEL
YEL
RED
BLK
WHT
1-679-422-
12
(12)
M101
(SLED)
M
LSW BOARD
M103
(CHUKING)
M
OPTICAL
PICK-UP
BLOCK
(KSS-720A)
OP FLEXIBLE
BOARD
MAIN FLEXIBLE
BOARD
MAIN BOARD
CN101
TP
(TE)
TP
(VC)
A
M102
(SPINDLE)
M
BLK
RED
YEL
BLU
1-679-421-
12
(12)
TP
(RFAC)
R111
R116
1-679-421-
12
(12)
B
C
D
E
F
G
H
I
J
K
1
2
3
4
5
6
7
8
9
10
11
12
13
A
(Page 26)
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