Sony CDX-CA750 / CDX-CA750X / CDX-CA760X Service Manual ▷ View online
17
CDX-CA750/CA750X/CA760X
• IC5 CXP84640-072Q (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
CDX-CA750/CA750X/CA760X
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 “L” 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
CDX-CA750/CA750X/CA760X
• IC501 MB90574BPMT-G-323-BND (MAIN SYSTEM CONTROL) (US, Canadian model) (MAIN BOARD)
• IC501 MB90574BPMT-G-335-BND (MAIN SYSTEM CONTROL) (AEP, UK model) (MAIN BOARD)
• IC501 MB90574BPMT-G-335-BND (MAIN SYSTEM CONTROL) (AEP, UK model) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
NCO
O
Not used. (Open)
5
ATT
O
System mute control signal output
6, 7
NCO
O
Not used. (Open)
8
VCC
—
Power supply pin (+5 V)
9
AMP ATT
O
Amp mute signal output
10
E2PSIO
I/O
EEPROM data signal input/output
11
E2PCKO
O
EEPROM clock signal output
12
DOOR SW/FLS SI
I
Door switch signal input (L: close) Flash write data signal input
13
FLS SO
O
Flash write data signal output
14
BUS ON
O
BUS ON control signal output
15
BEEP
O
Beep signal output
16
NS MASK
O
Tuner mute signal output
17
UNISI
I
SONY BUS data signal input
18
UNISO
O
SONY BUS data signal output
19
UNICKO
O
SONY BUS clock signal output
20
IFWIDTH
O
Not used. (Open)
21
SWSHIFT
O
Not used. (Open)
22
SYSRST
O
System reset signal output
23
(NCO)
O
Not used. (Open)
24
SIRCS
I
Remote control data signal input
25 – 29
NCO
O
Not used. (open)
30
AMPON
O
Amp on signal output (L: OFF/H: ON)
31
VOLATT
O
Electronic volume mute signal output (L: Mute on)
32
NCO
O
Not used. (Open)
33
VSS
—
Ground pin
34
C
—
Power stabilized capacitance pin Not used. (open)
35 – 37
NCO
O
Not used. (Open)
38
DVCC
—
D/A converter VREF input
39
DVSS
—
D/A converter GND pin
40, 41
(NCO)
O
Not used. (Open)
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 ground pin
46
KEYIN0
I
Key signal input 0
47
KEYIN1
I
Key signal input 1
48
RCIN0
I
Rotary commander signal input
49
NCO
O
Not used. (Open)
50
QUALITY
O
Quality signal output
51
FM AGC
O
Not used in this set. (Open)
52
MPTH
O
MPTH signal output to RDS decoder
53
VSM
I
S-meter signal input
54
VCC
—
Power supply pin (+5 V)
55, 56
NCO
O
Not used. (Open)
57
BOOT
O
Display microcomputer write control signal output
58
DOORIND
O
Front panel indicator signal output
59 – 62
NIL
I
Not used. (Connect to ground in this set.)
63
VSS
—
Ground pin
64
NIL
I
Not used. (Connect to ground in this set.)
65
FSW IN
O
Not used. (Open)
66 – 68
NCO
O
Not used. (Open)
20
CDX-CA750/CA750X/CA760X
Pin No.
Pin Name
I/O
Pin Description
69
FLASH W
I
Flash write mode detection signal input
70
I2CSIO
O
Tuner, electronic volume communication data signal output
71
I2CCKO
O
Tuner, electronic volume communication clock signal output
72
NCO
O
Not used. (Open)
73
X1A
I
Low speed oscillation signal input (32.768 kHz)
74
X0A
I
Low speed oscillation signal input (32.768 kHz)
75
DAVN
O
DAVN signal output to RDS decoder
76
DISCON IN
O
Not used. (Open)
77
BUIN
I
Backup power supply detection signal input
78
NCO
O
Not used. (Open)
79
KEYACK
I
KEY ACK detection signal input
80
ADON
O
A/D conversion power control signal output
81
NOSESW
I
Front panel attachment detection signal input
82
FLASH ON
O
Flash write jig power supply output
83
PWON
O
System power supply control signal output
84
NCO
O
Not used. (Open)
85
RAMBU
I
RAM reset detection signal input
86
HSTX
I
Hardware standby signal input
87
MD2
I
Operation mode input (Connect to ground.)
88, 89
MD1, 0
I
Operation mode input (Connect to VCC.)
90
RESET
I
Microcomputer reset signal input
91
VSS
—
Ground pin
92
X0
I
High speed oscillation signal input (3.68 MHz)
93
X1
I
High speed oscillation signal input (3.68 MHz)
94
VCC
—
Power supply pin (+5 V)
95, 96
REIN0, 1
I
Rotary encoder signal input
97 – 99
NCO
O
Not used. (Open)
100
4V SEL X/O
I
4 V/5.5 V preout menu with/without initial setting input
101
COLORSEL X/O
I
Illumination select with/without initial setting input Not used. (Open)
102
MODELSEL0 U/J
I
Destination setting input Not used. (Open)
103
DOT/L-CUBE
I
DOT/L-CUBE judgment initial setting input
104
CD/MD
I
CDX/MDX judgment initial setting input Not used. (Open)
105, 106
NCO
O
Not used. (Open)
107
RCIN1 (PULL UP)
I
Rotary commander signal input
108
TESTIN (PULL UP)
I
Test mode setting detection input
109
TELATT
I
TEL mute detection signal input
110
ILLIN
I
Illumination line detection signal input
111, 112
NCO
O
Not used. (Open)
113
TUNON
O
Tuner on signal output
114, 115
NCO
O
Not used. (Open)
116
EMPH
O
Not used. (Open)
117
ACCIN
I
ACC power supply detection signal input L: ACC ON
118
NCO
O
Not used. (Open)
119
VSS
—
Ground pin
120
NCO
O
Not used. (Open)
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