Read Panasonic CQ-C7402W Service Manual online
Pin
No.
Port
Part Name & Description
I/O
(V)
53
KI1(SOURCE)
Key return signal 1
INT/I
0
54
REMO INT
Remote
control
signal
interference
INT
3.7
55
NC/WP/ACC
No Connection
O
0
56
NC/A21
No Connection
O
0
57
NC/A22
No Connection
O
0
58
FLASH CE
FLASH chip enable
O
3.4
59
LCD CS
LCD driver chip select
O
3.4
60
NC
No Connection
-
-
61
NC
No Connection
-
-
62
REMO 1
Remote control signal
I
3.7
63
NC
No Connection
-
-
64
VLCD CONT
VLCD 16V control
O
3.4
65
M W U REQ
MAIN-u-com wake up request
O
0
66
LED ON
P.LED control output
O
3.4
67
NC
No Connection
-
-
68
NC
No Connection
-
-
69
FLASH OE/ LCD
RD
RD
FLASH output enable and
LCD driver lead strobe
LCD driver lead strobe
O
3.4
70
LCD WR
LCD driver light strobe signal
O
3.4
71
FLASH WE
FLASH light enable signal
O
3.4
72
NC
No Connection
-
-
73
LCD RESET
LCD driver reset control
O
3.4
74
FLASH RY/BY
FLASH ready/busy input
I
3.4
75
/RST
System reset signal input
I
3.5
76
NC
No Connection
-
-
77
X1A
No Connection
-
-
78
X0A
Not used
I
0
79
VSS
Ground
-
0
80
X0
MAIN system clock input
(12.5MHz)
(12.5MHz)
I
1.3
81
X1
MAIN system clock output
(12.5MHz)
(12.5MHz)
O
1.5
82
VCC
Positive power supply
-
3.5
83
D0
FLASH D0/LCD D0
I
0.9
84
D1
FLASH D1/LCD D1
I
0.9
85
D2
FLASH D2/LCD D2
I
1.1
86
D3
FLASH D3/LCD D3
I
0.9
87
D4
FLASH D4/LCD D4
I
1.0
88
D5
FLASH D5/LCD D5
I
1.1
89
D6
FLASH D6/LCD D6
I
1.1
90
D7
FLASH D7/LCD D7
I
0.8
91
D8
FLASH D8
I/O
0.9
92
D9
FLASH D9
I/O
0.9
93
D10
FLASH D10
I/O
0.9
94
D11
FLASH D11
I/O
0.8
95
D12
FLASH D12
I/O
0.8
96
D13
FLASH D13
I/O
0.7
97
D14
FLASH D14
I/O
0.7
98
D15
FLASH D15
I/O
0.7
99
A16
FLASH A15
O
3.0
100 A17
FLASH A16
O
1.7
10.3. CD Servo Block
IC401 : YESAM275
Pin
No.
Port
Descriptions
I/O
(V)
1
CVSS1
GND
-
0
2
A22
TP407
-
0
3
CVSS2
GND
-
0
4
DVDD1
I/O system (3.3V) power supply
-
3.1
5
A10
Address bus of FLASH ROM
O
3.1
6
-
-
-
-
7
A11
Address bus of FLASH ROM
O
0
8
A12
O
3.1
9
A13
O
3.1
10
A14
O
3.1
11
A15
O
0
12
/CVDD1
CORE CPU system (1.6V) power
supply
supply
-
1.6
13
-
-
-
-
14
DVSS1
GND
-
0
15
CVSS3
GND
-
0
16
/CVDD2
I/O system (3.3V) power supply
-
1.6
17
-
-
-
-
18
-
-
-
-
19
READY
-
-
3.1
20
/PS
FLASH ROM selection signal
O
3.1
21
-
-
-
-
22
-
-
-
-
23
R/W
Lead/light signal to FLASH ROM
O
3.1
24
/MSTRB
Memory access signal
O
3.1
25
-
-
-
-
26
/MSC
-
-
3.1
27
MUTE
Mute signal output (H:Mute on)
O
0
28
-
-
-
-
29
-
-
-
-
30
/HOLD
-
-
3.1
31
BIO
SUBO input
I
0
32
MP/MC
Operation mode setting (external pull-
up)
up)
I
3.1
33
DVDD2
I/O system (3.3V) power supply
-
3.1
34
CVSS4
GND
-
0
35
BD R1
GND
I
0
36
-
-
-
-
37
CVSS5
GND
-
0
38
-
-
-
-
39
-
-
-
-
40
DVSS2
GND
-
0
41
CLK C M AUDIO bit clock input
I
1.6
42
SCK
Clock input
I
3.0
43
LRCK
C
M
AUDIO L/R identifying signal input
I
1.6
44
CDFS
Serial frame sink signal input
I
2.4
45
DATA
CM
CM
AUDIO serial data input
I
1.6
46
-
-
-
-
47
SI
Serial data input
I
0
48
CLK M C AUDIO bit clock output
O
1.6
49
SCK
Clock input
I
3.0
50
CVSS6
GND
-
0
51
-
-
-
-
52
CVDD3
CORE CPU system (1.6V) power
supply
supply
-
1.6
53
LRCK
M
C
AUDIO L/R identifying signal output
O
1.5
54
CDFS
Serial frame sink signal input
I
2.4
55
-
-
-
-
56
DVDD3
I/O system (3.3V) power supply
-
3.1
57
DVSS3
GND
-
0
58
REST
SW
SW
Mechanics deck REST SW input
I
3.1
10
CQ-C7402W
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