Sony CDX-3900R / CDX-4000R / CDX-4000RX / CDX-L450 Service Manual ▷ View online
17
• IC5 CXP84640-063Q (CD SYSTEM CONTROL) (SERVO BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
ITRPT
—
Not used in this set.
2, 3
—
—
Not used in this set.
4, 5
NCO
—
Not used in this set.
6
OPEN
I
Front panel open detection input
7
CLOSE
O
Front panel close control output
8
LINKOFF
I
Bus interface link input
9
NCO
—
Not used in this set.
10
D SW
I
Down switch input (SW4)
11
SSTP
I
Limit switch input (SW3)
12, 13
NCO
—
Not used in this set.
14, 15
—
—
Not used in this set.
16
EMPH O
O
De-emphasis ON/OFF control output
17
CDMON
O
CD mechanism deck power control output
18
CD ON
O
CD power control output
19
A MUT
O
System attenuate control output
20
LD ON
O
Laser power ON/OFF control output
21
CD RST
O
CD system reset output
22
HOLD
O
Hold switch output
23
AGC CONT
O
AGC control output
24
—
—
Not used in this set.
25
PH3
I
Not used in this set.
26
TSTIN0
I
Not used in this set.
27
TSTIN1
I
Not used in this set.
28
TST.CLV
I
Not used in this set.
29
NCO
—
Not used in this set.
30
RESET
I
System reset input (“L”=Reset)
31
X IN
I
X’tal oscillator input from system clock. (10 MHz)
32
X OUT
O
X’tal oscillator output for system clock. (10 MHz)
33
GND
—
Analog ground
34
XT OUT
O
Not used in this set.
35
XT IN
I
Not used in this set.
36
AVSS
—
A/D converter ground
37
AVREF
I
A/D converter reference voltage input
38
TEP L
I
Not used in this set.
39
TEP H
I
Not used in this set.
40
SLED–
I
Sled drive input
41
PH2
I
Not used in this set.
42
SEK/SMET
I
Fixed at “H” in this set.
43
GFS/MNT2 SEL
I
Fixed at “H” in this set.
44
SC-JIG ON/OFF
I
Fixed at “H” in this set.
45
SCLK
O
CD-TEXT data read clock output
46
LOCK
I/O
Lock signal input/output
47
—
—
Not used in this set.
48
SCK2
O
Sub Q read clock output
49
SI2
I
Sub Q 80 bit, PCM peak and level data 16 bit input.
50
—
—
Not used in this set.
51
BUS CLK
I/O
Bus system serial clock input/output
52
BUS SI
I
Bus system serial interface input
53
BUS SO
O
Bus system serial interface output
54
F OK
I
Focus OK signal input
55
GFS
I
GFS signal detection input
56
TEST MODE
I
Fixed at “H” in this set.
18
Pin No.
Pin Name
I/O
Pin Description
57
SENS
I
SENS signal input
58
—
—
Not used in this set.
59
—
—
Not used in this set.
60
BU.IN
I
Back-up power detection input
61
BUSON
I
Bus on control input
62
IN SW
I
Disc in switch input (SW1)
63
SELF SW
I
Self switch input (SW2)
64
SCOR
O
Sub-code sync output
65
CD-CKO
O
CD signal process serial clock input
66
LM LOD
O
Loading motor control output
67
CD DATA
O
CD signal process serial data output
68
CD-XLAT
O
CD signal process serial data latch output
69
LM-EJ
O
Loading motor control output
70
DRV-OE
O
Focus/tracking coil/sled motor control output
71
MD2
O
Digital out ON/OFF control output (“L”: OFF, “H”: ON)
72
VDD
—
Power supply pin
73
NIH
I
Fixed at “H” in this set.
74
V/Z
I
Fixed at “H” in this set.
75
PH1
I
Not used in this set.
76
—
—
Not used in this set.
77
DOUT-SEL
I
Fixed at “H” in this set.
78 – 80
—
—
Not used in this set.
19
• IC501 MB90574PMT-G-266-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
TUNON
O
Tuner power control output (+5 V)
2
—
—
Not used. (Open)
3
BUSON
O
SONY-BUS ON control output
4 – 6
—
—
Not used. (Open)
7
ILLON
O
Illumination power control output
8
VCC
—
Power supply pin (+5 V)
9
E2P SIO
I/O
E
2
P SONY-BUS serial data input/output
10
E2P CKO
I/O
E
2
P SONY-BUS serial clock input/output
11
SYSRST
O
SONY-BUS system reset output
12
DOORSW (WRITE OUT)
I
DOOR OPEN/CLOSE detection input (“L”: CLOSE, “H”: OPEN)
13
LCDSO (WRITE IN)
O
LCD serial data output
14
LCDCKO
O
LCD serial clock output
15
LCDCE
O
LCD chip enable output
16
BEEP
O
BEEP output
17
UNISI
I
SONY-BUS serial data input
18
UNISO
O
SONY-BUS serial data output
19
UNICKO
O
SONY-BUS serial clock output
20
UNICKI
I
SONY-BUS serial clock input
21
CD MD
I
CD/MD select input (“L”: CD, “H”: MD) (Fixed at “L” in this set)
22
FLASHW
I
Flash memory write mode detection input
23
—
—
Not used. (Open)
24
SIRCS
I
Remote commander (infrared ray reception) input
25 – 28
—
—
Not used. (Open)
29
DOORIND
O
DOOR indicator output
30
IFWIDTH
O
Not used in this set.
31
—
—
Not used. (Open)
32
NS MASK
O
Noise mask output
33
VSS
—
Ground
34
C
—
Condenser connection pin of power stabilization.
35
AD ON
O
Power control output for A/D converter.
36, 37
REIN0, 1
I
Rotary encoder 0, 1 input
38
DVCC
—
D/A converter Vref pin (+5 V)
39
DVSS
—
D/A converter ground pin
40, 41
—
—
Not used. (Open)
42
AVCC
—
Analog power supply pin (+5 V)
43
AVRH
—
A/D converter Vref+ pin (+5 V)
44
AVRL
—
A/D converter Vref– pin
45
AVSS
—
Analog ground
46, 47
KEYIN0, 1
I
Key 0, 1 input
48
RCIN0
I
Rotary commander key input
49
DSTSEL
I
Destination setting input (Fixed at “L” in this set)
50
QUALITY
I
Noise detection input
51
FMAGC
I
FM AGC detection input
52
MPTH
I
Multi path detection input
53
VSM
I
Signal meter detection input
54
VCC
—
Power supply pin (+5 V)
55
RAMBU
I
RAM reset detection input
56
TUNATT
O
TUNER mute control output
57
VOLATT
O
Electric volume mute output
58
ATT
O
LINE mute output
59
AMPON
O
Power amplifier standby control output
60
AMPATT
O
Power amplifier mute control output
20
Pin No.
Pin Name
I/O
Pin Description
61
COLSW
I
Illumination color switch input (“L”: 2 colors, “H”: 1 color)
(Fixed at “L” in CDX-3900R/4000R, “H” in CDX-4000RX)
62
COLSEL
I
Illumination color select input (“L”: AMBER, “H”: GREEN) (Fixed at “L” in this set)
63
VSS
—
Ground
64
DAVN
I
Block synchronization detection input of RDS data.
65
FILE
I
Custom file setting input
66
TEXT
I
CD text setting input
67
NOSESW
I
Front panel attachment detection input
68, 69
—
—
Not used. (Open)
70
I2C SIO
I/O
I
2
C BUS serial data input/output
71
I2C CKO
I/O
I
2
C BUS serial clock input/output
72
—
—
Not used. (Open)
73
X1A
—
Low speed oscillation connecting pin (32.768 kHz)
74
X0A
—
Low speed oscillation connecting pin (32.768 kHz)
75
—
—
Not used. (Open)
76
KEYACK
I
Key acknowledge input
77
BUIN
I
Backup voltage detection input
78
ILLIN
I
Illumination (ILLIN) detection input (Fixed at “L” in this set)
79
TELATT
I
Telephone (TEL) detection input (Fixed at “L” in CDX-3900R)
80
—
—
Not used. (Open)
81
TEST IN
I
Test mode setting input
82
ACC IN
I
Accessory power supply (ACC) detection input
83
—
—
Not used. (Open)
84
LOCKIN
I
MD LOCK detection input
85
RCIN1
I
Rotary commander SHIFT input
86
HSTX
I
Hardware standby setting input
87
MD2
I
Connect to VSS in this set.
88, 89
MD1, 0
I
Connect to VCC in this set.
90
RSTX
I
Reset input
91
VSS
—
Ground
92
X0
—
High speed oscillation connecting pin (3.68 MHz)
93
X1
—
High speed oscillation connecting pin (3.68 MHz)
94
VCC
—
Power supply pin (+5 V)
95 – 97
—
—
Not used. (Open)
98
DIM SEL
I
Dimmer select input (“L”: With dimmer select, “H”: Without dimmer select)
(Fixed at “L” in this set)
99
TAP CD
I
TAPE/CD select input (“L”: CD, “H”: TAPE) (Fixed at “L” in this set)
100 – 118
—
—
Not used. (Open)
119
VSS
—
Ground
120
PW ON
O
System power control output
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