Sony CDX-S2020 Service Manual ▷ View online
29
CDX-S2020
Pin No.
Pin Name
I/O
Pin Description
55 to 57
NCO
O
Not used. (Open)
58
PANEL_SW
I
Front panel detach detection input (L: with front panel, H: without front panel)
59
DIAG
I
Mode input from power amp IC.
60
VOLATT
O
Attenuator control output to electronic volume IC.
61
NOSE-SW
O
Not used. (Open)
62
NCO
O
Not used. (Open)
63
VSS2
—
Ground
64
TU-ATT
O
Tuner mute control output
65
NCO (TUNON)
O
Not used. (Open)
66
NS_MASK
O
Noise mask output
67
EEP_CKO
O
Serial clock output to EEPROM communication.
68
EEP_SIO
I/O
Serial data input/output with EEPROM communication.
69
DOOR-IND
O
Not used. (Open)
70
AMPSTB
O
Standby control output to power amp IC.
71
NCO
O
Not used. (Open)
72
LCDSO/FLS_SO
O
Serial data output to LCD driver IC.
73
LCDCE/FLS_SI
O
Chip enable output to LCD driver IC.
74
LCDCKO
O
Serial clock output to LCD driver IC.
75 to 78
NCO
O
Not used. (Open)
79
I2C_SIO
I/O
I2C bus serial data input/output
80
NCO
O
Not used. (Open)
81
I2C_CKO
O
I2C bus serial clock output
82
DAVN
I
RDS data block synchronization detection input
83
SIRCS
I
SIRCS signal input
84
NCO
O
Not used. (Open)
85
BEEP
O
Beep output to power amp IC.
86 to 88
NCO
O
Not used. (Open)
89
VDD3
—
Power supply pin (+3.3 V)
90
NCO
O
Not used. (Open)
91
VSS3
—
Ground
92
QUALITY
I
Noise detection input
93
VSM
I
S-meter voltage detection input
94, 95
KEYIN1, 0
I
Key input 1, 0
96
RCIN0
I
Rotary commander key input
97 to 99
NCO
O
Not used. (Open)
100
VREF+
—
A/D converter power supply (+) pin (+3.3 V)
30
CDX-S2020
SECTION 4
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
4-1. MAIN SECTION
Ref. No.
Part No.
Description
Remark
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories are given in the last of this parts list.
R
R
1
X-2024-491-1 PANEL ASSY, SUB
2
3-042-244-11 SCREW (T)
3
X-3383-739-1 LOCK ASSY (S)
4
2-050-124-01 SCREW +BTT 2.6X5
5
A-1101-201-A MAIN BOARD, COMPLETE
6
2-021-848-01 SHEET (TU), GROUND
7
1-776-527-82 CORD (WITH CONNECTOR) (ISO) (POWER)
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU1
A-3220-961-A TUNER UNIT (TUX-032)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-790-01 SCREW +PTT 2.6X4 (S)
#3
7-685-793-09 SCREW +PTT 2.6X8 (S)
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
F901
not supplied
not supplied
TU1
not supplied
#1
#1
#1
#3
#2
#1
MG-611XE-186//Q
A
A
B
B
1
2
3
4
7
5
6
31
CDX-S2020
4-2. FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
X-2024-731-1 PANEL SUB ASSY, FRONT
52
X-2025-127-1 BUTTON ASSY (S)
53
3-246-463-01 FILTER (IR)
54
2-320-551-01 PLATE (CD), LIGHT GUIDE
55
3-246-479-01 SPRING (RELEASE)
56
2-320-543-01 PANEL (CD), FRONT BACK
57
X-3385-071-1 CASE ASSY (for FRONT PANEL)
58
A-1101-151-A PANEL OVERALL ASSY, FRONT
59
1-694-977-12 CONDUCTIVE BOARD, CONNECTION
60
3-251-320-01 EMBLEM (NO. 2.5), SONY
LCD901 1-805-078-11 DISPLAY PANEL, LIQUID CRYSTAL
#4
7-685-106-19 SCREW +P 2X10 TYPE2 NON-SLIT
#4
#4
56
59
57
58
51
60
not supplied
(KEY board)
(KEY board)
LCD901
not supplied
not supplied
not
supplied
not
supplied
not
supplied
not
supplied
not supplied
52
53
54
54
55
32
CDX-S2020
4-3. CD MECHANISM SECTION (1)
(MG-611XE-186//Q)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
101
A-3372-444-A CHASSIS (T) SUB ASSY
102
3-253-729-11 SPRING (LTR), TENSION COIL
103
3-257-892-12 SPRING (DAMPER), COIL
104
3-257-892-01 SPRING (DAMPER), COIL
105
2-345-767-11 SPRING (KF60), TENSION
106
3-259-033-01 DAMPER (S)
107
3-352-758-31 SCREW (M1.7X2.5), TOOTHED LOCK
108
A-1082-775-A SERVO BOARD, COMPLETE
109
X-3384-088-2 LEVER (L) ASSY
110
X-3384-089-2 LEVER (R) ASSY
#5
7-627-552-87 SCREW, PRECISION +P 1.7X2.2
not supplied
(SENSOR board)
(SENSOR board)
not supplied
not supplied
#5
101
102
109
110
103
104
105
106
107
108
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