Sony CDX-C680 / CDX-C780 Service Manual ▷ View online
– 33 –
• IC501 MB90574PFV-G-123-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
SEKOUT
O
SEEK OUT output
2
AF-SEEK
O
AF SEEK output (Not used in this set.)
3
WIDE
O
WIDE/NARROW select output
4
ST-MONO
I/O
Use a thing both as ST-IND display input and force MONO output.
5
TUNMUTE
O
Tuner mute output
6
FM-ON
O
FM ON output
7
TU-ON
O
Tuner ON output
8
VCC
—
Power supply pin (+5 V)
9
CSV-RST
O
Audio composition IC reset output (Not used in this set.)
10
BUSON
O
Bus ON control output
11
SYSRST
O
System reset output
12
DOORSW
I
Door OPEN/CLOSE detection input
13
LCDSO
O
LCD serial data output
14
LCDCKO
O
LCD serial clock output
15
BEEP
O
BEEP output
16
LCDCE
O
LCD chip enable output
17
UNISI
O
Serial data input
18
UNISO
O
Serial data output
19
UNICKIO
I/O
Serial clock input/output
20
SD-IN
I
Signal detector input
21
CSV-SO
O
Audio composition serial data output (Not used in this set.)
22
CSV-CKO
O
Audio composition serial clock output (Not used in this set.)
23
CSV-CE
O
Audio composition chip enable output (Not used in this set.)
24
SIRCS
I
Remote commander input
25
PLLSI
I
PLL data input
26
PLLSO
O
PLL data output
27
PLLCKO
O
PLL clock output
28
PLLCE
O
PLL chip enable output
29
ILL-ON
O
Illumination power control output
30
DIMMER
I/O
Dimmer control input/output
31
TIRIND
O
TIR indicator control output (Not used in this set.)
32
LCDINH
O
LCD blank display control output
33
VSS
—
GND
34
C
—
Power stabilization capacitor pin
35
AD-ON
O
Power control output of A/D conversion.
36, 37
RE-IN0, 1
I
Rotary encoder input 0, 1
38
DVCC
—
D/A converter VREF input
39
DVSS
—
GND of D/A converter.
40
NCO
O
Not used.
41
LCDANG
O
LCD view angle alignment output
42
AVCC
—
Analog power supply pin (+5 V)
43
AVRH
—
A/D converter VREF+ input
44
AVRL
—
A/D converter VREF- input
45
AVSS
—
Analog GND
46, 47
KEYIN0, 1
I
Key input 0, 1
48
RC-IN0
I
Rotary commander input 0
49
DSTSEL0
I
Destination select input 0 (Fixed at “L” in this set.)
50
DSTSEL1
I
Destination select input 1 (Fixed at “L” in this set.)
51
DSTSEL2
I
Destination select input 2 (Fixed at “H” in this set.)
52
MTP
I
Tuner multi-pass input (Not used in this set.)
53
VSM
I
S-Meter voltage detection input
54
VCC
—
Power supply pin (+5 V)
– 34 –
Pin No.
Pin Name
I/O
Pin Description
55
RAMBU
I
RAM reset detection input
56
POWSEL
I
Power select initial setting input
57
EQ-SEL
I
Equalizer connection with/without detection initial input
58
TESTIN
I
Test mode setting detection input
59
DOORIND
O
Door indicator output
60
TIRPLAY
O
Audio line select control output at TIR playback. (Not used in this set.)
61, 62
SUB-SW1, 0
O
Simple SUB WOOFER control output 1, 0
63
VSS
—
GND
64
VOLCE
O
Electric volume serial chip enable output
65
MUTE
O
System mute control output
66
VOLSO/SUBSO
O
Main/Sub volume serial data output
67
VOLCKO/SUBCKO
O
Main/Sub volume serial clock output
68
SUBCE
O
Sub volume serial chip enable output
69
FLASH-W
I
Flash write in mode detection input
70
I2CSIO
I
RDS serial data input
71
I2CCKO
I
RDS serial clock input
72
RC-IN1
I
Rotary commander input
73
X1A
—
Low speed oscillation input (32.768 kHz)
74
X0A
—
Low speed oscillation input (32.768 kHz)
75
DAVN
I
RDS IC data taking in detection input (Not used in this set.)
76
KEYACK
I
Key input acknowledge
77
BU-IN
I
Back-up power detection input
78
ILLIN
I
Illumination line detection input
79
TELMUTE
I
Telephone mute detection input
80
NOSESW
I
Front panel detachable detection input
81
ACCIN
I
Accessory power detection input
82 – 85
TIR-D0 – D3
I/O
TIR IC command input/output 0 – 3 (Not used in this set.)
86
(VCC)
—
Connect to power supply pin.
87
(VSS)
—
Connect to GND.
88, 89
(VCC)
—
Connect to power supply pin.
90
RST
—
Microcomputer reset input
91
VSS
—
GND
92
X0
—
High speed oscillation input (3.68 MHz)
93
X1
—
High speed oscillation input (3.68 MHz)
94
VCC
—
Power supply pin (+5 V)
95
TIR-BUSY
I
TIR IC BUSY output monitor pin (Not used in this set.)
96
TIR-WR
O
TIR IC data write in pulse output (Not used in this set.)
97, 98
TIR-CE
O
TIR IC chip enable output (Not used in this set.)
99
TIR-RES
O
TIR IC reset/power down output (Not used in this set.)
100
TIR-PDWN
O
TIR IC power down output (Not used in this set.)
101
TIR-RD
O
TIR IC data read in pulse output (Not used in this set.)
102
MTLIN
I
Auto METAL detection input (Not used in this set.)
103
AM STIN
I
AM stereo detection input (Not used in this set.)
104
REEL
I
Tape reel table rotation detection input (Not used in this set.)
105
POS0
I
Tape position detection input 0
106
POS1
I
Tape position detection input 1
107
POS2
I
Tape position detection input 2
108
POS3
I
Tape position detection input 3
109
LM-EJ
O
Tape loading motor control output (Eject direction) (Not used in this set.)
110
LM-LOD
O
Tape loading motor control output (Loading direction) (Not used in this set.)
111
CM-ON
O
Tape capstan motor control output (Not used in this set.)
112
TAPEON
O
Tape power control output (Not used in this set.)
113
N-ROUT
O
Tape forward/reverse detection output (Not used in this set.)
– 35 –
– 36 –
Pin No.
Pin Name
I/O
Pin Description
114
AMSON
O
Tape AMS control output (Not used in this set.)
115
DOLBC
I/O
Tape DOLBY B/C select control input/output (Not used in this set.)
116
DOLBY
I/O
Tape DOLBY control input/output (Not used in this set.)
117
CSV-NAR
I
Not used in this set.
118
LEDON
O
Front panel LED control output
119
VSS
—
GND
120
POWON
O
System power control output
4-2. CIRCUIT BOARDS LOCATION
DISC IN SW board
LOAD SW board
tuner unit
(TU10)
(TU10)
SUB board
LIMIT SW board
SERVO board
MAIN board
RELAY board
KEY board
4-3. BLOCK DIAGRAM — CD SECTION —
– 37 –
– 38 –
CDX-C680/C780
59 RFDC
55 FE
57 TE
80 SSTP
89
PCMD
87
LRCK
85
WDCK
91
BCK
DIGITAL SERVO/
DIGITAL SIGNAL PROCESSOR
IC501
71 TFDR
72 TRDR
72 TRDR
73 FFDR
74 FRDR
69 SFDR
70 SRDR
79 MDP
3
PD1
4
PD2
7
E
6
F
17
RFO
16
FE
14
TE
CD5V
RF AMP, LD-APC ERROR AMP
IC1
OPTICAL PICK-UP
KSS-520A
2
PD
PD
LD
LD DRIVE
Q3
1
LD
19
LD ON
2
TR+
1
TR-
14 F+
13 F-
23
OP+
24
OP-
10
OP+
TRACKING
FOCUS
11
OP-
9
MUTE
20
OP+
19
OP-
OP IN+
OP IN-
TRACKING/FOCUS COIL DRIVE,
SLED MOTOR DRIVE
IC7
SPINDLE MOTOR DRIVE
IC601
16 S+
17 S-
M902
(SLED)
12 SRDT
3
SCOR
5
MCK
1
EXCK
2
SBSO
4
WFCK
EEPROM
IC551
11 SCLK
13 DQSY
9
DATI
10 LRCI
11 WDCI
7
BCKI
16
15
17
17
DRAM CONTROLLER
IC2
20
|
23
•
25
•
34
|
38
33
XOE
32
XCAS
27
XWE
26
XRAS
A0-A9
D1-D4
45
SDTI
84
C4M
33
DOUT
28
SCOR
27
XROF
3
C4M
2
7
1
2
2
3
4
5
5
6
1
2
3
4
5
6
8
9
10
11
12
13
14
7
8
8
9
10
11
12
13
14
DIN
59 SCOR
4
XROI
20
WFCK
7
EXCK
6
SBSO
8
SQCK
CLOK
9
SQSO
1
WFCK
42 XWRE
43 WRDE
44 XLT
10
SENS
11
SCLK
24
GFS
37
FOK
47 XSOE
48 SDTO
57 XQOK
58 GSCR
12
DATA
63
46
14
GRST
SCK
25
RFCK
21
GTOP
5
RFCK
6
GTOP
2
DATA
3
BCK
1
LRCK
16
VOUTL
CDINL
13
VOUTR
R-CH
1
LINE AMP
IC403
3
D/A CONVERTER
IC401
DRAM
IC4
X401
16.9344MHz
5
XTI
6
XTO
A0-A9
D1-D4
14
XTAI
LRCK
BCK
DATA
4
CLKO
27 DM1
4
XRAS
3
XWE
23 XCAS
22 XOE
M
12 DROUT+
13 DROUT-
M901
(SPINDLE)
25
24
M
M903
(LOADING)
M
INVERTER
9
L+
7
L-
2
LMOT1
4
LMOT2
LOADING MOTOR DRIVE
IC6
X1
10MHz
TX
SW4
(DOWN)
SW3
(LIMIT)
SW1
(DISC IN)
SW2
(SELF)
28
|
31
67 CD DATA
42 SCLK
54 FOK
55 GFS
16
43
44
44
CD SYSTEM CONTROL
IC5
57 SENS
65 SCK 2
66 SI 2
20 LD ON
62 IN SW
63 SELF SW
14 LM EJ
15 LM LOM
31 X IN
32 X OUT
17 CDMON
18 CD ON
9
DRV OE
10 D SW
45
GRSRST
ESPSDT
ESPXQOK
EMPH O
46
68
69
69
70
ESPXLT
ESPXRDE
ESPXWRE
GRSCOR
71
56
48
48
49
DATA
CLK
SCOR
ESPXSOE
64
19
59
61
52
BUS SI
BUS ON
AMUT
CD CKO
CE
51
8
60
30
RESET
BU IN
LNK OFF
BUS CLK
5
•
9
|
12
•
14
|
18
1
•
2
•
24
•
25
POWER
CONTROL
Q402, 403
5V REG
Q401
CD
CONTROL
Q404, 405
SWITCH
Q1, 5
BATT
MD5V
D/A5V
CD5V
BU5V
SWITCH
Q2, 4
LPF
IC404
MD5V
VC
BUS SI
BUS ON
AMUT
RESET
BU IN
LINK OFF
BUS CLK
53
BUS SO
BUS SO
4
TUNER SECTION
DISPLAY SECTION
DISPLAY SECTION
2
3
Signal path
: CD
: CD
TUNER
SECTION
1
04
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