Sony CDX-M620 / CDX-M670 Service Manual ▷ View online
33
33
CDX-M620/M670
tuner unit
(TUX201)
(TUX201)
DISC IN SW board
SWITCH board
DISPLAY board
KEY board
SERVO board
LIMIT SW board
MAIN board
SUB (CD) board
4-2. CIRCUIT BOARDS LOCATION
Pin No.
Pin Name
I/O
Pin Description
83
STBY
I
Hardware standby signal
84
VCC
—
Power supply pin (+5 V)
85
XTAL
—
Crystal oscillator (18.432 MHz)
86
EXTAL
—
Crystal oscillator (18.432 MHz)
87
VSS
—
Ground
88
PF7
O
Not used. (Open)
89
VCC
—
Power supply pin (+5 V)
90 – 96
PF6 – PF0
O
Not used. (Open)
97
UNI SO
O
SONY BUS serial data output
98
UNI SI
I
SONY BUS serial data input
99, 100
VSS
—
Ground
101
UNI CKI
I
SONY BUS serial clock input
102
P53
O
Not used. (Open)
103
AVCC
—
Power supply pin (+5 V)
104
VREF
—
Power supply pin (+5 V)
105 – 112
P40 – P47
I
Connecting to ground in this set.
113
AVSS
—
Ground
114
VSS
—
Ground
115 – 122
P17 – P10
O
Not used. (Open)
123
MD0
I
Mode setting 0
124
MD1
I
Mode setting 1
125
MD2
I
Mode setting 2
126 – 128
PG0 – PG2
O
Not used. (Open)
34
34
CDX-M620/M670
I-V
CONV.
FOCUS
ERROR
DIGITAL
CLV
SUB
CODE
PROCESS
TRACKING
ERROR
LD
DRIVE
Q101
FOCUS
COIL
DRIVE
RF
EQ
EQ
EFM
DEM
D/A
I/F
D/A
CONV.
RFO
RFAC
FE
TE
SE
RFDC
FFDR
FRDR
TFDR
SFDR
SRDR
MDP
TRDR
TE
FE
E
D
B
C
A
F
11
10
PD
4
LD
3
7
6
8
13
14
16
LD
AMP
LD ON
HOLD SW
AGC CONT
22
21
20
5
RF AMP, LD APC,
ERROR AMP
IC1
DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC501
TRACKING/FOCUS COIL DRIVE
SLED/SPINDLE/LOADING MOTOR DRIVE
IC7
10
11
22
21
TRACKING
COIL
DRIVE
8
9
25
24
SLED
MOTOR
DRIVE
6
7
31
32
32
FOCUS
COIL
TRACKING
COIL
M902
SLED
MOTOR
SPINDLE
MOTOR
DRIVE
12
13
18
M901
SPINDLE
MOTOR
LOADING
MOTOR
DRIVE
5
4
1
2
34
35
M903
LOADING
MOTOR
MUTE 1
MUTE 2
42
43
40
41
38
39
35
52
51
50
61
79
SQSO
6
SQCK
7
SCOR
MD2
24
73
XRST 11
DATA 13
DATA 13
XLAT 14
SCLK 17
CLOK
LOUT2
15
SENS 16
GFS 22
FOK
FOK
XTALI
XTALO
32
32
32
LOCK
34
54
SERVO
CTL
X1
10MHz
SW4
(LIMIT)
SW1
(DOWN)
SW3
(DISC IN)
SW2
(SELF)
LM EJ
69
LM LOD
66
SLED –
40
DRV OE
70
LD ON
20
HOLD
22
AGC CONT
23
SSTP
11
FOK
XIN
XOUT
54
GFS
55
SENS
57
CD CKO
65
SCLK
45
CD XLAT
68
CD DATA
67
CD RST
21
MD2
71
SCOR
64
SCK2
48
SI2
49
LOCK
R-CH
79
LOUT1
CD ON
MD ON
MD ON
46
CD ON
18
CDM ON
17
D SW
10
IN SW
62
SELF SW
63
CD SYSTEM CONTROL
IC5
SYSTEM CONTROL
IC501 (1/3)
BUS CLK 51
A MUT 19
OPEN 6
BUS SI 52
BUS SO
SRST
BUS CLK
BUS SI
BUS ON
BU CHECK
UNI SO
LINK OFF
SIRCS
53
DISPLAY
SECTION
SECTION
1
4
ATT
TUNER
SECTION
CDL
DISPLAY
SECTION
SECTION
2
BUS ON 61
RESET 30
BU IN 60
SW901
(RESET)
S60
(RESET)
HSTX
RESET
1
85
X2
16MHz
2
IC502
BU 5V
XIN XOUT
17
3
4
9
SIRCS INTERFACE
IC801
X801
4MHz
BATT (H)
CHECK
Q603
BATT (L)
CHECK
BATT
86
RSTX
90
SIRCS 24
BU IN
RAM BU
77
SYS RST
6
BUS ON
14
UNI SO
18
UNI SI
17
UNI CLK
19
CD EJECT OK
58
CLOSE 7
CD OPENREQ
59
ATT
5
BATT
10
3
RESET
13
2
BUS ON
CONT
12
9
8
11
1
4
6
BUS INTERFACE
IC601
CLK
DATA
5
4
6
2
1
3
8
7
CN601
BUS
CONTROL IN
Q602
A
C
B
D
E
F
PD
LD
OPTICAL PICK-UP
KSS-720A
• Signal path
:CD
31
32
D3
G0
• R-ch : same as L-ch.
4-3. BLOCK DIAGRAM — CD SECTION —
(Page 36)
(Page 35)
(Page 36)
35
35
CDX-M620/M670
AJ1
(ANTENNA)
1
10
2
AM ANT
MPX
SA CLK
SA OUT
8
AMDET
9
RDSDET
FM ANT
TUNER UNIT
TUX201
FM AMP
Q202
NOISE
CANCEL
IC201
Q203
13
11
15
14
20
21
17
18
31
50
56
7
6
SYSTEM CONTROL
IC501 (2/3)
16
20
DC-DC
CONVERTER
IC306
5
1
8
14
S METER
S-METER
NS MASK
52 MPTH
75 DAVN
75 DAVN
QUALITY
VOL ATT
EXT ATT
QUAL
SCL
SDA
S METER
MP IN
AM
MPX
38 SA OUT
35 SA CLK
33 AC INL
38 ACOUTL
12
SDA
70 I2CSDA
13
SCL
71 I2CSCL
17
SDA
10 E2PSDA
18
SCL
11 E2PSCL
RDS DECODER
IC202
MPX
OSCO
OSCI
LV IN
4
5
X201
4.3MHz
9
SDA
SCL 10
MPTH 2
DAVN 8
4
28
AUXL
OUT FL
43 MDL
ELECTRONIC VOLUME
IC305
27
OUT RL
24
SWR
55
ST-BY
16
TEL ATT
95
ILL IN
81
ACC IN
73
X1A
74
X0A
84
TEST IN
83
PW ON
92
X0
93
X1
114
TUN ON
DISPLAY SECTION
3
CD
SECTION
4
ATT
CDL
IC310
3
5
1
7
LINE
AMP
AMP
IC304
3
5
1
7
PRE
AMP
IC307
Q301
Q303
Q305
Q309
MUTE
CONTROL
Q310,312
12
5
3
11
22
4
9
7
POWER AMP
IC309
MUTE
STBY
CN101
FL+
FL–
RL+
RL–
TEL MUTE
ILL
ACC
TEST
FR+
13
14
7
15
4
10
2
9
1
12
3
11
AUDIO 9V
FR–
RR+
RR–
5
AMP REM
6
ANT REM
16
BATT
X501
32.768kHz
X503
3.68MHz
ILLUM CHECK
Q407
POWER
CONT
Q401
ACC CHECK
Q405
POWER
CONT
Q110,111
Q406
R-CH
BATT
BATT
9V
TUNER 8V
TUNER 5V
POWER
CONT
Q107,108
REG
Q201
9V
POWER
CONT
Q306-308
BATT
Q402
Q404
CN301
CN302
R
L
SUB OUT (MONO)
–3
–4
R
L
AUDIO OUT
REAR
R-CH
–5
–6
R
L
AUDIO OUT
FRONT
R-CH
–1
–2
R
L
BUS AUDIO IN
R-CH
53
AEP,UK,E
FL
RL
F901
• Signal path
: FM
: AM/MW
: CD
EEPROM
-11V
+11V
3
1
IC310
5
7
EXCEPT M670:US
EXCEPT M670:US
M670:US
EXCEPT M670:US
EXCEPT M670:US
M670:US
• R-ch : same as L-ch.
4-4. BLOCK DIAGRAM — TUNER SECTION —
(Page 36)
(Page 34)
36
36
CDX-M620/M670
BUS SI
BUS CLK
BUS ON
BU CHECK
LINK OFF
SIRCS
D70
D908
S RST
UNI SO
BUF
IC701
7
IR
RECEIVE
IC62
7
IR
RECEIVE
IC901
7
16
16
6
LCD DRIVER
IC60
100
99
97
98
100
99
97
98
86
X701
18.432MHz
INH
CLK
DATA
CEO
INH
CLK
DATA
CE1
DIMMER
85
LED SW1
85
86
XTAL
LINK OFF
SYS RES
BU IN
BUS ON
UNI CKI
UNI SI
UNI SO
EXTAL
66 CEO
69 INH
64 CKO
70
52
CEI
71 CE2
LCD9V
ILL ON
9V
62
RX
46
LED SW1
47
LED SW2
57
BOOT
SA CLK
SA IN
60
LCD SO/TX
POWER
CONT.
Q109,112
VREF
CONT.
Q651,652
I
DET
Q650
SHIFT
Q105
POWER
CONT.
Q101,102
POWER
CONT.
Q117,118
LED
DRIVE
Q901,902
REG
IC652
MT +B
KEY IN
MATRIX
AD ON
SW
Q501
BATT
BU 5V
SA OUT
SA CLK
9V
CD 6V
LCD 9V
MT +B
FLASH W
CLOSE SW
RT
INA1
SHIFT
OPEN SW
I DET
FPCRTL
MOT–
MOT+
FLSWPWON
TX
RX
LED SW1
LED SW2
BOOT
BATT
CD 6V
BZ501
98
1
101
112
38
34
81
50
97
SUB SYSTEM CONTROL
IC702
CD
SECTION
2
LCD1
LCD60
LCD DRIVER
IC61
98
97
99
84
INH
CE2
CLK
DATA
LED SW2
86
DIMMER
CN902
POWER
CONT.
Q1,2
LCD 9V
DIMMER
CONTLROL
Q3
ILL ON 9V
TX (SO)
RX (SI)
FL SW
1
3
I
DET
IC650
3
7
2
MOTOR
DRIVE
IC651
3
14
16
11
6
12
SW1001
(OPEN/CLOSE)
40
96
99
37
BEEP
DRIVE
Q502
BEEP
ON/OFF
DRIVE
Q103
15
CD ON
MD ON
DDC ON 57
9V
ON/OFF
DRIVE
Q106
BU 5V
VOLTAGE CHECK
IC102
2
1
69
CENTER SW
100
101
82
KEY IN1
47
KEY IN0
46
RC IN1
72
KEY ACK
79
AD ON
80
RC IN0
48
12
115
116
106
13
98
97
2
3
OUT1 7
9
OUT2 10
INA2 14
VCC
DC/DC CONV.
CONTROL
IC101
CD 5V
REG
Q119
REG
Q114,115
BATT
REG
Q113,116
SYSTEM CONTROL
IC501 (3/3)
TUNER
SECTION
3
J651
(REMOTE IN)
M601
OPEN/CLOSE
MOTOR
CD
SECTION
1
100
SW1002
(CENTER)
OPEN KEY
61
LSW60
OPEN
(DISPLAY BOARD)
DETACH SW
64
S1
DETACH
NOSE SW
62
D903
(DISC IN)
LCD DRIVER
IC1
POWER
CONT.
Q60,61
LCD 9V
DIMMER
CONTLROL
Q62
LCD
AEP,UK,E
4-5. BLOCK DIAGRAM — DISPLAY SECTION —
(Page 34)
(Page 35)
(Page 34)
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