Kenwood CD-203 Service Manual download (Page 3 of 17)

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Manual type:Service Manual
Pages:17
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Page 3 of 17
1. Pin description
Pin No.
Name
I/O
Function
1~7
7G~1G
O
Display digit control (Grid7~Grid1)
8
VDD
Power supply (+5V)
9
SQCK
O
Q data reading clock output
10
NC
O
Unused
11
SUBQ
I
Q data input
12~15
KR3~KR0
I
Key return 3~0
16
NC
I
Unused
17
RESET
I
Reset input
L : RESET
18
SLT SW
I
CDM25 start limit switch input
L : SW ON
19
DOWN SW
I
CDM25 mechanism down switch input
L : SW ON
20
AVSS
I
Unused (connected to VSS)
21
UP SW
I
CDM25 mechanism up switch input
L : SW ON
22
CLOSE SW
I
CDM25 close switch input
L : SW ON
23
OPEN SW
I
CDM25 open switch input
L : SW ON
24
OPEN M
O
Open motor control
H : ACTIVE
25
CLOSE M
O
Close motor control
H : ACTIVE
26
RTRAY R
O
Rotary tray motor control (CW)
H : ACTIVE
27
RTRAY L
O
Rotary tray motor control (CCW)
H : ACTIVE
28
RTRAY S
O
Rotary tray motor control (deceleration)
H : ACTIVE
29
AVDD
Unused (connected to VDD)
30
AVREF
Unused (connected to VSS)
31
NC
I
Unused
32
XT2
Unused (OPEN)
33
VSS
GND
34
X1
I
System clock input
35
X2
Unused
36
DSENSE
I
CDM25 disc sensor detection
37
PSENSE
I
CDM25 position sensor detection
38
LDC
O
Laser signal output
L : LASER ON
39
FOK
I
FOK signal input
H : FOCUS ON
40
D.R.I.V.E
I
Unused
42
SDATA
I/O
System serial data signal input output
43
BUSY
I/O
System serial busy signal input output
44
SCOR
I
Sub code frame sync detection
45
MON
O
Focus drug countermeasure circuit control
46
MUTG
O
Digital mute control
H : MUTE ON
47
REM
I
Remote control signal input
48
VPP
GND
49
SENSE
I
Sense input from CXD2507AQ
50
DTA
O
Data output for CXD2507AQ
51
CLK
O
Clock output for CXD2507AQ
52
VDD
Power supply (+5V)
53,54
DEFECT SEL./NC
I
Unused
55
LAT
O
Latch output for CXD2507AQ
56
GFS
I
Frame signal input
57
RMUTE
O
Analog mute control
L : MUTE ON
58
MDT
O
Attenuater data output
59
MCK
O
Attenuater clock output
60
MEL
O
Attenuater latch output
61~70
Sp~Sg/KS
O
Display segment control (Seg p-Seg g) / Key scan
71
VLOAD
Display drive negative power supply (-35V)
72~77
Sf~Sa/KS
O
Display segment control (Seg f-Seg a) / Key scan
78~80
10G-8G
O
Display digit control (Grid10-Grid8)
41
SERIAL SW
I
Serial communication 8 (XS8)/16(SL16) bit changover
H : 16 BIT
CD-203/204/DPF-R3010/R3010E/R4010/R4010E
3
CIRCUIT DESCRIPTION
Sample