Sony CDX-S2020 Service Manual ▷ View online
25
CDX-S2020
IC750 TDA8589BJ/N2/R1 (MAIN Board (1/2))
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT-FL-
OUT-FL+
OUT-RL-
OUT-RL+
IN-RL
S-GND
IN-RR
OUT-RR+
OUT-RR-
OUT-FR+
OUT-FR-
DIAG
ANT-REM
AMP-REM
SERVO5V
MECH6V
VP
B.UP+B
SDA
SCL
VP2
PGND3
SVR
IN-FL
IN-FR
BEEP
PGND2
VP1
STB
PGND1
RST
CRES
AUDIO8.3V
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
26
CDX-S2020
• IC PIN DESCRIPTIONS
• IC1 µPD63712GC-8EU-A (RF AMP, DIGITAL SERVO, DIGITAL SIGNAL PROCESSOR) (SERVO BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
LD
O
Laser diode ON/OFF control signal output (L: laser OFF, H: laser ON)
2
PD
I
Dimmer monitor input from optical pick-up laser diode.
3
PN
I
Not used. (Fixed at L in this set)
4
AVDD
—
Analog power supply pin (+3.3 V)
5
DGND
—
Ground
6
RFOK
O
RFOK signal output to system control IC.
7
INTQ
O
CD text pack synchronization signal output to system control IC.
8
RST
I
CD reset signal input from system control IC.
9
A0
I
Command/parameter discrimination signal input from system control IC.
(L: command transmission, H: parameter transmission)
10
STB
I
Data strobe signal input from system control IC.
11
SCK
I
Serial clock input from system control IC.
12
SO
O
Serial data output to system control IC.
13
SI
I
Serial data input from system control IC.
14
DVDD
—
Power supply pin (+3.3 V)
15
DAVDD
—
D/A converter power supply (+) pin (+3.3 V)
16
ROUT
O
Analog audio signal output (R-ch)
17
DAGND
—
Ground
18
REGC
—
Capacitor connection pin for SCF regulator.
19
DAGND
—
Ground
20
LOUT
O
Analog audio signal output (L-ch)
21
DAVDD
—
D/A converter power supply (+) pin (+3.3 V)
22
XVDD
—
Power supply pin (+3.3 V)
23
XTAL
O
Main system clock output (16.9344 MHz)
24
XTAL
I
Main system clock input (16.9344 MHz)
25
XGND
—
Ground
26
DVDD
—
Power supply pin (+3.3 V)
27
C1D1/FZD
O
Not used. (Open)
28
C1D2/TZD
O
Not used. (Open)
29
C2D1/RMUTE
O
CD R-ch data zero detection signal output
30
C2D2/LMUTE
O
CD L-ch data zero detection signal output
31
C2D3/SHOCK/SBSY
O
Not used. (Open)
32
LOCK/FR
O
Not used. (Open)
33
WFCK/MIRR
O
Not used. (Open)
34
RFCK/HOLD
O
Not used. (Open)
35
PLCK
O
Not used. (Open)
36
C16M
O
Not used. (Open)
37
DGND
—
Ground
38
TX
O
Not used. (Open)
39
EMPH/RAMOVER
O
Not used. (Open)
40
FLAG
O
Not used. (Open)
41
DVDD
—
Power supply pin (+3.3 V)
42
LIMIT
I
Not used. (Fixed at L in this set)
43
XTALEN
I
Oscillation circuit ON/OFF control signal input (L: ON, H: OFF)
(Fixed at L in this set)
44
DGND
—
Ground
45
DIN
I
Not used. (Connect to DOUT in this set)
46
DOUT
O
Not used. (Connect to DIN in this set)
47
SCKIN
I
Not used. (Connect to SCKO in this set)
48
SCKO
O
Not used. (Connect to SCKIN in this set)
49
LRCKIN
I
Not used. (Connect to LRCK in this set)
27
CDX-S2020
Pin No.
Pin Name
I/O
Pin Description
50
LRCK
O
Not used. (Connect to LRCKIN in this set)
51
DVDD
—
Power supply pin (+3.3 V)
52
FD+
O
Focus servo drive PWM signal output (+)
53
FD–
O
Focus servo drive PWM signal output (–)
54
TD+
O
Tracking servo drive PWM signal output (+)
55
TD–
O
Tracking servo drive PWM signal output (–)
56
SD+
O
Sled servo drive PWM signal output (+)
57
SD–
O
Sled servo drive PWM signal output (–)
58
MD+
O
Spindle servo drive PWM signal output (+)
59
MD–
O
Spindle servo drive PWM signal output (–)
60
DGND
—
Ground
61
TESTEN
I
Test setting input (Fixed at L in this set)
62 to 66
TEST4 to TEST0
I
Test setting input (Fixed at L in this set)
67
ADGND
—
A/D converter power supply (–) pin
68
EFM
O
EFM signal output
69
ASY
I
EFM comparator reference voltage input
70
ADVDD
—
A/D converter power supply pin (+3.3 V)
71
RFI
I
RF signal input for EFM data growing.
72
EQ2
—
Not used. (Open)
73
EQ1
—
RF amplifier equalizer parts connection pin
74
RF–
I
Not used. (Open)
75
RF2–
I
RF amplifier inversion input
76
AGCO
O
RF signal output after on AGC.
77
AGCI
I
RF AGC signal amplifier input
78
RFO
O
RF signal output before on AGC.
79
ATEST
I
Not used. (Open)
80
C3T
—
Capacitor connection pin for 3T detection.
81
AGND
—
Ground
82
A
I
Signal input (A) from optical pick-up detector.
83
C
I
Signal input (C) from optical pick-up detector.
84
B
I
Signal input (B) from optical pick-up detector.
85
D
I
Signal input (D) from optical pick-up detector.
86
F
I
Signal input (F) from optical pick-up detector.
87
E
I
Signal input (E) from optical pick-up detector.
88
VREFIN
I
Reference voltage (+1.65 V) input
89
AVDD
—
Analog power supply pin (+3.3 V)
90
REFOUT
O
Reference voltage (+1.65 V) output
91
REFC
—
Capacitor connection pin for reference voltage output.
92
FE–
I
Focus error signal amplifier inversion input
93
FEO
O
Focus error signal amplifier output
94
ADCIN
I
Not used. (Open)
95
TE–
I
Tracking error signal amplifier inversion input
96
TEO
O
Tracking error signal amplifier before output
97
TE2
O
Tracking error signal amplifier after output
98
TEC
I
Tracking error signal comparator input
99
AGND
—
Ground
100
PWMSW
I
Not used. (Fixed at L in this set)
28
CDX-S2020
• IC501 MN101E01KDC2 (SYSTEM CONTROL) (MAIN BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
DAVDD
—
D/A converter power supply (+) pin (+3.3 V)
2
NCO
O
Not used. (Open)
3
DAVSS
—
D/A converter power supply (–) pin
4
UNISO
O
Not used. (Open)
5
UNISI
I
Not used. (Fixed at L in this set)
6
UNICKO
O
Not used. (Fixed at L in this set)
7
RETRA
O
Not used. (Open)
8, 9
NCO
O
Not used. (Open)
10
VDD1
—
Power supply pin (+3.3 V)
11
MMOD
I
Not used. (Fixed at L in this set)
12
OSCOUT
O
Main clock output (27 MHz)
13
OSCIN
I
Main clock input (27 MHz)
14
VSS1
—
Ground
15
XIN
I
Sub clock input (32.768 kHz)
16
XOUT
O
Sub clock output (32.768 kHz)
17
VDD2
—
Power supply pin (+3.3 V)
18
MOD1
—
Not used. (Fixed at H in this set)
19
RESET
I
Microcomputer reset input
20
RCIN1
I
Rotary commander SHIFT key input
21
ACCIN
I
Accessory power supply detection input
22
TESTIN
I
Test mode detection input
23
TELATT
I
Telephone attenuator detection input
24
ATT
O
Audio mute control output
25
XKEYON
O
Key power supply control output
26
NCO
O
Not used. (Open)
27
KEYACK
I
Key acknowledge detection input
28
TU_ATTIN
I
Mute zero cross detection input from tuner unit.
29, 30
NCO
O
Not used. (Open)
31
BUIN
I
Backup power supply detection input
32
CD_INTQ
I
CD text pack synchronization signal input from CD servo IC.
33
CD_SO
O
Serial data output to CD servo IC.
34
CD_SI
I
Serial data input from CD servo IC.
35
CD_SCK
O
Serial clock output to CD servo IC.
36
BUSON
O
Not used. (Fixed at H in this set)
37
SYSRST
O
Not used. (Fixed at H in this set)
38
CD_RFOK
I
RFOK signal input from CD servo IC.
39
CD_RST
O
Reset signal output to CD servo IC.
40
CD_A0
O
Command/parameter discrimination signal output to CD servo IC.
41
CD_STB
O
Data strobe signal output to CD servo IC.
42
CD_MUTE-R
I
Mute zero cross detection input (R-ch) from CD mechanism deck.
43
CD_MUTE-L
I
Mute zero cross detection input (L-ch) from CD mechanism deck.
44
CD_INSW
I
Disc in switch detection input from CD mechanism deck.
45
CD_SELFSW
I
Self switch detection input from CD mechanism deck.
46
CD_LM_LO
O
Loading motor control output to CD mechanism deck. (Loading direction)
47
CD_LM_EJ
O
Loading motor control output to CD mechanism deck. (Eject direction)
48
CD_DSW
I
Down switch detection input from CD mechanism deck.
49
CD_LIMIT
I
Limit switch detection input from CD mechanism deck.
50
AMPATT
O
Not used. (Fixed at L in this set)
51
AREASEL2
O
Not used. (Open)
52
AREASEL1
O
Not used. (Open)
53
AREASEL0
I
Destination area initial setting input (Fixed at H in this set)
54
COL_SW
I
1 color/2 color select input (1 color) (Fixed at L in this set)
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