Sony CDX-C880R Service Manual ▷ View online
– 29 –
• IC501 MB90574PFV-G-133-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
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
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
I
Serial data input
18
UNISO
O
Serial data output
19
UNICKI
I/O
Serial clock input/output
20
CSV-DATA
I
Audio composition serial data input
21
CSV-SO
O
Audio composition serial data output
22
CSV-CKO
O
Audio composition serial clock output
23
CSV-CE
O
Audio composition chip enable output
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
O
Dimmer control output
31
TIRIND
O
TIR indicator control output
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
SD-IN
I
Signal detector input
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
O
CSV power control output
50
DSTSEL1
I
Destination select input 1 (Fixed at “L” in this set.)
51
DSTSEL2
I
Destination select input 2 (Fixed at “L” in this set.)
52
MTP
I
Tuner multi-pass input
53
VSM
I
S-Meter voltage detection input
54
VCC
—
Power supply pin (+5 V)
– 30 –
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 CSV.
61, 62
SUB-SW1, 0
O
Simple SUB WOOFER control output 1, 0
63
VSS
—
GND
64
VOLCE
O
Electronic 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
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
86
HRST
—
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 (3.6864 MHz)
93
X1
—
High speed oscillation input (3.6864 MHz)
94
VCC
—
Power supply pin (+5 V)
95
TIR-BUSY
I
TIR IC BUSY output monitor pin
96
TIR-WR
O
TIR IC data write in pulse output
97
TIR-CE
O
TIR IC chip enable output
98
TIR-CE
O
TIR IC chip enable output
99
TIR-RES
O
TIR IC reset/power down output
100
TIR-PDWN
O
TIR IC power down output
101
TIR-RD
O
TIR IC data read in pulse output
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
CD/MD operation detect input 0
106
POS1
I
CD/MD operation detect input 1
107
POS2
I
CD/MD operation detect input 2
108
POS3
I
CD/MD operation detect input 3
109
A-MUTE
I
CD mute signal input
110
EMPH
I
Emphasis signal input
111
LINKOFF
O
Link off output (Not used in this set.)
DISC IN SW board
LOAD SW board
tuner unit
(TU10)
(TU10)
SUB board
LIMIT SW board
SERVO board
MAIN board
RELAY board
KEY board
CSV board
SUPER CAPACITOR board
– 31 –
– 32 –
Pin No.
Pin Name
I/O
Pin Description
112, 113
NC
—
Not used in this set.
114
MD
O
CD serial data output
115
MC
O
CD serial clock output
116
ML
O
CD serial latch output
117
CSV-NAR
I
Audio composition request signal input
118
LEDON
O
Front panel LED control output
119
VSS
—
GND
120
POWON
O
System power control output
4-2. CIRCUIT BOARDS LOCATION
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-521A
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
14
GRST
SCK
25
RFCK
21
GTOP
5
RFCK
6
GTOP
DRAM
IC4
A0-A9
D1-D4
14
XTAI
LRCK
BCK
DATA
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
60
30
RESET
BU IN
BUS CLK
5
•
9
|
12
•
14
|
18
1
•
2
•
24
•
25
8
LINK OFF
LINK OFF
21
CD RST
VC
BUS SI
BUS ON
AATT
EMPH
RESET
BU IN
BUS CLK
53
BUS SO
BUS SO
3
DISPLAY
SECTION
SECTION
Signal path
: CD
: CD
04
63
46
XRST 15
XRST
64
26
MD
MD
MAIN
SECTION
2
27
MC
MC
28
ML
ML
2
DATA
3
BCK
1
LRCK
16
VOUTL
CD L-CH
13
VOUTR
R-CH
1
LINE AMP
IC403
3
D/A CONVERTER
IC401
X401
16.9344MHz
5
XTI
6
XTO
4
CLKO
22 RST
MD
CONTROL
Q402, 403
5V REG
Q401
CD
CONTROL
Q404, 405
SWITCH
Q1, 5
BATT
MD 5V
D/A 5V
SERVO 8V
BU 5V
SWITCH
Q2, 4
5V REG
IC404
MD 5V
MAIN
SECTION
1
4-3. BLOCK DIAGRAM — CD SECTION —
– 33 –
– 34 –
CDX-C880R
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