Sony SCD-1 / SCD-777ES (serv.man3) Service Manual ▷ View online
45
Pin No.
Pin Name
I/O
Description
87
ARPINT
I
Interrupt signal input from the ARP (IC702)
88
SDSCS
O
Chip enable signal output to the servo digital signal processor (IC512)
89
SDSACK
I
Chip enable signal input from the servo digital signal processor (IC512)
90
CS1
O
Chip enable signal output to the S-RAM (IC717, 718)
91
CS0
O
Chip enable signal output to the flash memory (IC716)
92
VSS
—
Ground terminal
93
SHR RDY
I
Ready signal Input from the DSD decoder (IC703)
94
IFREQ
O
Request signal output to the FL controller (IC1001)
95
RST OUT
O
System reset signal output to the servo digital signal processor (IC512) and expander (IC711,712)
96
TKC
I
Sled FG signal input from the position sensor (IC008)
97
HFG
I
HFG signal input from the spindle motor drive (IC501)
98
A22
O
99
A21
O
Address signal output to the ARP (IC702) and expander (IC711,712)
100
A20
O
46
•
MAIN BOARD IC711 CXD1095R (EXPANDER)
Pin No.
Pin Name
I/O
Description
1
AK1
O
2
AK2
O
3
MON3
O
4
MON4
O
Monitor signal output terminal Not used (open)
5
MON5
O
6
MON6
O
7
MON7
O
8
VSS
—
Ground terminal
9
WADCE
O
Watermark signal output to the RF AD (IC708)
10
TEST
O
Test signal output to the DSD decoder (IC703) “H”:active
11
WMGC0
O
RF gain control for watermark signal output to the RF AD (IC708)
12
WMGC1
O
RF gain control for watermark signal output to the RF AD (IC708)
13
SHR RST
O
Reset signal output to the DSD decoder (IC703)
14
SHR MUTE
O
Mute signal output to the DSD decoder (IC703)
15
SHR LT
O
Latch pulse signal output to the DSD decoder (IC703)
16
—
O
Not used (open)
17
NC
—
Not used (open)
18
FWON
O
FWON signal output to the ARP (IC702)
19
MD2
O
CD-TX mute signal output to the ARP (IC702)
20
MUTE
O
CD-DA mute signal output to the ARP (IC702)
21
ARP RST
O
Reset signal output to the ARP (IC702)
22
DFCT
I
DFCT signal input from the ARP (IC702)
23
VSS
—
Ground terminal
24
VDD
—
Power supply terminal (+5V)
25
NORF
I
NORF signal input from the ARP (IC702)
26
LOCK
I
Lock signal input from the ARP (IC702)
27
FIL SET
I
Filter select signal input from the STANDARD/CUSTOM switch (S173) “L”:CUSTOM “H”
:STANDARD
:STANDARD
28
D0
I/O
29
D1
I/O
Two-way data bus with the CPU (IC701)
30
D2
I/O
31
NC
—
Not used (open)
32
NC
—
Not used (open)
33
D3
I/O
34
D4
I/O
35
D5
I/O
Two-way data bus with the CPU (IC701)
36
D6
I/O
37
D7
I/O
38
XCLR
I
Clear signal input terminal (pull up)
39
XDIS
I
Reset signal input from the ARP (IC702)
40
VSS
—
Ground terminal
41
XWR
I
Strobe signal input from the CPU (IC701)
42
XRD
I
Strobe signal input from the CPU (IC701)
43
XCS
I
Chip enable signal input from the CPU (IC701)
47
Pin No.
Pin Name
I/O
Description
44
A0
I
45
A1
I
Address signal input from the CPU (IC701)
46
A2
I
47
REM CODE
O
Remote category signal output terminal “L”:CD2 “H”:CD1
48
—
I
Not used (open)
49
NC
—
Not used (open)
50
—
I
Not used (open)
51
—
O
Not used (open)
52
DF INIT
O
Initial signal output to the digital filter (IC301)
53
MODE
O
SACD/CD mode signal output to the digital filter (IC301)
54
A FILE
O
Filter signal output terminal
55
VSS
—
Ground terminal
56
VDD
—
Power supply terminal (+5V)
57
A MUTE
O
Audio mute signal output terminal “L”:mute
58
XLR ON
O
Balance signal output terminal
59
ADS LT
O
Not used (open)
60
DCMF INIT
O
Not used (open)
61
DOCTRL
O
Digital control signal output to the select switch (IC732)
62
AK0
O
Monitor signal output to the CPU (IC701)
63
NC
—
Not used (open)
64
NC
—
Not used (open)
48
•
MAIN BOARD IC712 CXD1095R (EXPANDER)
Pin No.
Pin Name
I/O
Description
1
STBL DTC
I
Stabilizer detect signal input from the stabilizer detect sensor (IC009)
2
—
I
Not used (open)
3
—
I
Not used (open)
4
LD SW1
I
Loading panel close signal input from the close switch (S004)
5
LD SW0
I
Loading panel open signal input from the open switch (S003)
6
SLD SW1
I
Sled motor (out) signal input from the out switch (S001)
7
SLD SW0
I
Sled motor (in) signal input from the in switch (S001)
8
VSS
—
Ground terminal
9
LOAD
O
Load signal output to the loading motor drive (IC515)
10
UNLOAD
O
Unload signal output to the loading motor drive (IC515)
11
STBL DRV
O
Stabilizer drive signal output terminal
12
SPCTL1
O
Spindle motor control signal output to spindle motor drive (IC501)
13
SPCTL0
O
Spindle motor control signal output terminal Not used (open)
14
SPGC2
O
Spindle motor control signal output to spindle motor drive (IC501)
15
SPGC1
O
Spindle motor control signal output to spindle motor drive (IC501)
16
PIHG
O
PIHG signal output terminal Not used (open)
17
NC
—
Not used (open)
18
SRVRST
O
Servo reset signal output to the servo digital signal processor (IC512)
19
PISEL
O
PI select signal output terminal
20
TEAGC0
O
Tracking error signal output terminal
21
TEAGC1
O
Tracking error signal output terminal
22
ERROR
I
Error signal input from the servo digital signal processor (IC512)
23
VSS
—
Ground terminal
24
VDD
—
Power supply terminal (+5V)
25
FON
I
FON signal input from the servo digital signal processor (IC512)
26
TIUNLK
I
Tilt motor control signal input from the tilt motor drive (IC505)
27
—
I
Not used (open)
28
D0
I/O
29
D1
I/O
Two-way data bus with the CPU (IC701)
30
D2
I/O
31
NC
—
Not used (open)
32
NC
—
Not used (open)
33
D3
I/O
34
D4
I/O
35
D5
I/O
Two-way data bus with the CPU (IC701)
36
D6
I/O
37
D7
I/O
38
XCLR
I
Clear signal input terminal (pull up)
39
XDIS
I
Reset signal input from the ARP (IC702)
40
VSS
—
Ground terminal
41
XWR
I
Strobe signal input from the CPU (IC701)
42
XRD
I
Strobe signal input from the CPU (IC701)
43
XCS
I
Chip enable signal input from the CPU (IC701)
44
A0
I
45
A1
I
Address signal input from the CPU (IC701)
46
A2
I
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