Sony CDX-C5050X Service Manual ▷ View online
17
• 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
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
• IC801 MN101C49KTB (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
VREF–
—
Ground for A/D converter power supply
2
S METER
I
S meter voltage detect signal input
3
FM AGC
I
FM auto gain control signal input
4
KEY IN1
I
KEY signal input
5
KEY IN0
I
KEY signal input
6
DSTSEL
I
Not used.
7
RC IN0
I
Rotary commander signal input
8
FUNC SEL
I
Model function selection pin
9
NIL
—
Ground
10
VREF+
—
A/D converter power supply
11
VDD
—
Power supply (+5 V) input pin
12
OSC OUT
O
High speed clock signal output (18.432 MHz)
13
OSC IN
I
High speed clock signal input (18.432 MHz)
14
VSS
—
Ground for power supply
15
XI
I
Low speed clock signal input (32 kHz)
16
XO
O
Low speed clock signal output (32 kHz)
17
MMOD
—
Not used. (Fixed at “L”.) Memory mode select signal input
18
RC IN1
I
Rotary commander shift key signal input
19
SYSRST
O
System reset signal output
20
BUS ON
O
Bus on control signal output
21
LCD DATA
O
LCD serial data signal output
22
LCD CE
O
LCD chip enable signal output
23
LCD CLK
O
LCD serial clock signal output
24
ILL ON
O
Illumination power supply control signal output
25
DOOR IND
O
Control signal output for power on sub panel when open to front panel
26
KEY ACK
I
Key active interrupt detect signal input
27
NOSE
I
Front panel attachment detection input
28
BU IN
I
Back up power supply setect signal input
29
SIRCS
I
Remote control signal input
30, 31
NC
—
Not used. (Fixed at “L”.)
32
RAM
—
Not used.
33
RESET
I
Reset signal input
34
NC
—
Not used.
35
BEEP
O
Beep signal input
36
NC (FUNC SEL)
I
Model function selection pin
37
NC (FUNC SEL)
I
Model function selection pin
38 – 40
NC
—
Not used.
41
UNI CLI
I
Bus system serial clock signal input
42
UNI SO
O
Bus system serial interface signal output
43
UNI SI
I
Bus system serial interface signal input
44
UNI CLO
O
Bus system serial clock signal output
45
SDA
I/O
I2C bus serial data signal input/output
46
NC
—
Not used.
47
SCL
O
I2C bus serial clock signal output
48, 49
NC
—
Not used.
50
LOCK
I
Check when remove to lock of MDNO CLV SERVO
51 – 63
NC
—
Not used.
64
ACC IN
I
Accessory power supply voltage detection input
65
TEL MUT
I
Telephone attenuate detect signal input
66
TEST IN
I
Test mode setting detect first stage signal input
67
ANT CUT
—
Not used.
68
NC
—
Not used.
20
Pin No.
Pin Name
I/O
Pin Description
69
AMP ON
O
Power supply on/off control signal output
70
MUT
O
System attenuate control signal output
71
AMP MUT
O
Power amp attenuate control signal output
72
VOL MUT
O
Mute control signal output for electrical volume
73
TU ON
O
Tuner attenuate signal output
74
EEP SDA
I/O
Tuner EEPROM serial data signal input/output
75
EEP SCL
O
Runer EEPROM serial clock signal output
76
IF BW
I
Not used.
77
NC
—
Not used. Tuner switch VCO level shift signal input
78
NC
—
Not used.
79
REIN1
I
Rotary encoder signal input
80
REIN0
I
Rotary encoder signal input
81
AD ON
O
Power control output for A/D conversion
82 – 92
NC
—
Not used.
93
OPEN
I
Front panel open/close condition signal input
94 – 98
NC
—
Not used.
99
PW ON
O
System power supply control signal output
100
NC
—
Not used.
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