Sony ZS-M50 Service Manual ▷ View online
– 33 –
Pin No.
Pin name
I/O
Description
1
DAOUT0
–
not used (OPEN).
2
DAOUOT1
–
not used (OPEN).
3
KEY0
–
Reserved (“H” level).
4
KEY1
–
Reserved (“H” level).
5
KEY2
–
Reserved (“H” level).
6
CHACK IN
I
Detection input from chucking-in switch (S685).
7
PACK IN
I
Detection input from back-in switch (not used).
8
PACK OUT
I
Detection input from back-out switch (S686).
9
–
not used (ground connection).
10
–
not used (ground connection).
11
AVSS
–
ground for analog.
12
X INT
I
Interrupt status input from digital signal processor IC (IC121).
13
PDOWN
I
Power cutoff signal input from master control IC (IC801).
14
–
Reserved (ground connection).
15
SQSY
I
Subcode Q-SYNC (SCOR) input from digital signal processor IC (IC121).
16
DQSY
I
Digital-in U-bit format subcode input from digital signal processor IC (IC121).
17
–
Reserved (ground connection).
18
–
Reserved (ground connection).
19
–
Reserved (ground connection).
________
20
SYS-RST
I
System reset input pin “L”: Reset.
21
TEST
I
Test mode pin “L”: Normal mode, “H”: Test mode.
22
+3.3V
–
Power supply terminal (VCC).
23
VBAT
I
Power supply pin for internal RTC and RAM.
24
XOUT-T
O
Sub-clock connector pin (32.768kHz).
25
XINT-T
I
Sub-clock connector pin (32.768kHz).
26
GND
–
Power supply terminal (ground).
27
XOUT
O
Main clock connector pin (12MHz).
28
XIN
I
Main clock connector pin (12MHz).
29
EXEM
I
Switch pin for External ROM mode and Internal ROM mode.
30
S1
–
not used (OPEN).
31
–
Reserved (ground connection).
32
SENS
I
Internal status (SENSE) input from digital signal processor IC (IC121).
33
SHOCK
I
Track-jump detection signal input from digital signal processor IC (IC121).
34
–
Reserved (ground connection).
35
–
Reserved (ground connection).
36
STB
O
Power ON/OFF control signal output.
37
REC P
I
Detection input from REC switch (S688).
38
PB P
I
Detection input from PB switch (S687).
39
LD LOW
O
Loading motor control signal output.
40
NC
–
not used (OPEN).
41
MNT2
I
Monitor 2 input from digital signal processor IC (IC121).
42
MNT3
I
Monitor 3 input from digital signal processor IC (IC121).
43
LEDO
–
not used (OPEN).
44
–
Reserved (ground connection).
45
–
Reserved (ground connection).
46
RST LOW
–
not used (OPEN).
47
GND
–
Power supply terminal (ground).
48
+3.3V
–
Power supply terminal (VCC).
49
SNG/CHG
–
Reserved (ground connection).
50
JOG1
–
Reserved (ground connection).
DG BOARD IC601 SYSYTEM CONTROL (RU8X12MF-0021)
– 34 –
Pin No.
Pin name
I/O
Description
51
JOG0
–
Reserved (ground connection).
52
SDA
I/O
Serial data I/O with EEPROM (IC171).
53
SCL
O
Serial clock output to EEPROM (IC171).
54
2M/4M
–
Reserved (“H” level).
55
–
Reserved (ground connection).
56
–
Reserved (ground connection).
57
RXD (UART)
O
Communication with master control IC (IC801) and UART receive output.
58
TXD (UART)
I
Communication with master control IC (IC801) and UART send input.
59
RTS (T)
I
UART send request input from master control IC (IC801).
60
CTS (R)
O
UART send request output to master control IC (IC801).
61
AUBIT0
–
Reserved (“H” level).
62
AUBIT1
–
Reserved (ground connection).
63
CLKSET0
–
Reserved (ground connection).
64
CLKSET1
–
Reserved (ground connection).
65
GND
–
Power supply pin (ground).
66
+3.3V
–
power supply pin (VCC).
67
SCLK
O
Serial clock output to digital signal processor IC (IC201).
68
SWDT
O
Write data signal output to digital signal processor IC (IC121).
69
SRDT
I
Read data signal input from digital signal processor IC (IC121).
70
EMP
O
Delmphasis ON/OFF control signal output.
71
SCK1
–
not used (OPEN).
72
SOUT1
–
not used (OPEN).
73
SIN1
–
not used (OPEN).
74
CSB
–
Reserved (VCC connection).
75
LDON
O
Laser ON/OFF control signal output.
76
PIT/GRV
–
not used (OPEN).
77
FOK
I
Focus OK signal input from digital signal processor IC (IC121).
78
–
not used (OPEN).
79
LOCK
–
not used (OPEN).
80
WRPWR
O
Laser power switch signal output to digital signal processor IC (IC121).
________
81
DIG-RST
O
Reset signal output.
82
–
not used (OPEN).
_______
83
DA-RST
O
Reset signal output to D/A and A/D converters “L”: reset.
84
DSEL-A
–
not used (OPEN).
85
DSEL-B
–
not used (OPEN).
86
MOD
O
MD module ON/OFF control signal output.
__
87
REC/PB
–
not used (OPEN).
88
–
not used (OPEN).
89
SCTX
O
Record data output authorization signal output.
90
XLATCH
O
Serial latch signal output to digital signal processor IC (IC121).
91
–
not used (OPEN).
92
–
not used (OPEN).
93
AMUTE
–
not used (OPEN).
94
LD OUT
O
Loading motor F control signal output.
95
LD IN
O
Loading motor F control signal output.
96
LIMIT IN
I
Detection input from limit switch (S681).
97
PROTECT
I
Record tab detection input from disk write-protect switch (S683).
98
REFLECT
I
Disk reflection rate detection input from reflect switch (S682).
99
GND
–
Power supply terminal (ground).
100
+3.3V
–
Power supply terminal (VCC).
– 37 –
– 38 –
– 35 –
– 36 –
• Signal path.
F
: FM
f
: MW/LW
E
: MD PLAY
q
: MD REC
J
: CD
ZS-M50
6-2. BLOCK DIAGRAM (MAIN SECTION)
– 39 –
– 40 –
– 42 –
– 41 –
ZS-M50
• Signal path.
E
: MD PLAY
q
: MD REC
J
: CD
6-3. BLOCK DIAGRAM (MD SECTION)
r
Circuit Boards Location
POWER board
CD MOTOR board
MOTOR board
ANTENNA SW board
AUDIO board
CONTROL (L) board
JOG board
LINE board
CONTROL (F) board
MAIN board
CONTROL (R) board
BATT board
LCD board
BL board
DG board
CONTROL SW board
SW board
BD board
TUNER board
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