Read Panasonic WV-CU950 Service Manual online
4-1-2
SCHEMATIC DIAGRAM OF MAIN BOARD [
1
]
NMI,RESET
CPU
EEPROM
DIP-SW
LED
5V
4.2V(LCD BACK LIGHT)
5V
27MHz
for AVREF
<LOCATION MARK>
JK2
DC 9V
INPUT
JACK
DC 9V
INPUT
JACK
PKEY[1]
PKEY[2]
PKEY[3]
PKEY[4]
PKEY[5]
PKEY[6]
PKEY[7]
KEYS[2]
KEYS[1]
KEYS[0]
AD[7]
AD[6]
AD[5]
AD[4]
AD[0]
AD[1]
AD[2]
AD[3]
A[18]
A[17]
A[16]
A[19]
A[12]
A[15]
A[14]
A[13]
A[8]
A[11]
A[10]
A[9]
AD[7]
AD[6]
AD[5]
AD[4]
AD[3]
AD[2]
AD[0]
AD[1]
A[19]
KEYS[0-3],PKEY[0-7]
PKEY[0]
RS485_RX
KEYS[3]
A[18]
A[17]
A[16]
A[15]
A[14]
A[13]
A[12]
A[11]
A[10]
A[9]
A[8]
A[7]
A[6]
A[5]
A[4]
A[3]
A[2]
A[1]
A[0]
RS232C_RX
VP5B
RS485_TX
RS232C_TX
LCD-BRIGHT
LCD-CONTRAST
RS485TX_EN
RS232C_EN
/RS485RX_EN
COL_DET
SMALL/LARGE
VP5C
VP5A
E6
OPEN
C48 0.1
Z3
100
100
10k
10k
10k
10k
10k
1
2
3
6
4
4
5
4
5
5
4
5
7
8
DGND
L3
100
IC4
11
10
C38
0.1
9
TA
10
RB
11
RA
12
GND
Attachment1
Attachment2
R21
9.1k
R31
7.5k
JK2
2
1
3
4
C65
2.2
CF1
3
4
5
7
8
9
Q5
E8
2
1
R26
4.7
R22
3.3k
R45
1k
Z8
1
2
36
7
8
R28
30k
R5
10k
C35
OPEN
IC4
(7/7)
(1/7)
14
VCC
7
GND
C30
100/6.3
100/6.3
TP1
OPEN
IC4
9
L13
8.2
R32
OPEN
R30
24k R33
OPEN
R12 22k
D3
Z9
1
2
36
7
8
C34
0.1
Z10
10k
10k
10k
100
1
2
3
4
5
6
7
8
R7
10k
DGND
Z12
1
2
36
7
8
R9 22k
IC6
1
S
2
Q
3
W
4
Vss
5
D
6
C
7
HOLD
8
Vcc
E7
OPEN
TP2
OPEN
5V
R23
4.7k
TD2
IC32
1
on/off
2
GND
3
Np[Vref]
4
Vout
5
Vin
Z23
1
2
36
45
7
8
R20
0
R50
36k
C40
22p
C68 0.1
R46
1k
Z7
1
2
36
7
8
R24
6.8k
IC1
1
CT
2
RT
3
NON1
4
INV1
5
FB1
6
DT1
7
OUT1
8
GND
9
Vcc
10
OUT2
11
DT2
12
FB2
13
INV2
14
NON2
15
SCP
16
Vref
R15
510
Z13
1
2
36
7
8
R29
7.5k
L4
100
C42
1
IC4
3
Z20
1
2
3
4
5
5
4
6
7
8
SW3
OPEN
1
2
3
4
5
C25
0.1
IC4
5
8
4
6
DGND
C15
3900/10
C61
2.2
TP3
OPEN
D20
C23
1
R49
1k
C110
1
DGND
Z4
1
2
3
6
7
8
R63
100
DC_IN
Z2
1
2
3
2
3
6
7
8
SW5
1
2
3
4
5
6
7
8
R62
100
Z22
1
2
36
45
7
8
C106
0.01
Q2
L5
8.2
E4
D8
C14
47/16
R40
10k
C44
22p
DGND
C58
0.1
C59
0.1
C41
47/16
C18
470/10
DGND
IC3
1
NC_1
2
INPUT
3
NC_2
4
GND
5
DELAY_CAPACITOR
6
OUTPUT
7
SUPPLY_VOLTAGE
8
NC_3
Z5
1
2
36
45
45
45
45
45
7
8
C20
OPEN
Q7
1
S1
2
S2
3
S3
4
G
5
D1
6
D2
7
D3
8
D4
IC2
1
NC_1
2
INPUT
3
NC_2
4
GND
5
DELAY_CAPACITOR
6
OUTPUT
7
SUPPLY_VOLTAGE
8
NC_3
IC99
1
P32/SCL
2
P33/SO0/SDA
3
P34/TO0
4
P35/TO1
5
P36/TO2
6
P37/TO3
7
RESET
8
VDD_1
9
X2
10
X1
11
VSS_1
12
P00
13
P01
14
P02
15
P03
16
P04
17
P05
18
P06
19
P07
20
P67/REFRQ/HLDAK
21
P66/WAIT/HLDRQ
22
P65/WR
23
P64/RD
24
P63/A19
25
P62/A18
26
P61/A17
27
P60/A16
28
P57/A15
29
P56/A14
30
P55/A13
31
P54/A12
32
P53/A11
33
P52/A10
34
P51/A9
35
P50/A8
36
P47/AD7
37
P46/AD6
38
P45/AD5
39
P44/AD4
40
P43/AD3
41
P42/AD2
42
P41/AD1
43
P40/AD0
44
ASTB/CLKOUT
45
VSS_2
46
TEST
47
P10/PWM0
48
P11/PWM1
49
P12/ASCK2/SCK2
50
P13/RxD2/SI2
51
P14/TxD2/SO2
52
P15
53
P16
54
P17
55
VDD_2
56
P70/ANI0
57
P71/ANI1
58
P72/ANI2
59
P73/ANI3
60
P74/ANI4
61
P75/ANI5
62
P76/ANI6
63
P77/ANI7
64
AVDD
65
AVREF1
66
AVSS
67
ANO0
68
ANO1
69
AVREF2
70
AVREF3
71
P20/NMI
72
P21/INTP0
73
P22/INTP1
74
P23/INTP2/CI
75
P24/INTP3
76
P25/INTP4/ASCK/SCK1
77
P26/INTP5
78
P27/SI0
79
P30/RxD/SI1
80
P31/TxD/SO1
R25
3.3k
A5V
R18
510
C66
0.1
R86
100
C109
1000p
R36
10k
R6
20k
C19
OPEN
Z14
1
2
3
4
5
6
7
8
R16
510
Z17
1
2
36
45
7
8
F1
1A
250V
C37
2.2
R47
1k
R10
33k
R14
2.2k
C67
0.1
E2
C69 0.1
D9
DGND
L14
8.2
1/4W
C39
2.2
C26
0.1
C56
0.1
Z21
1
2
36
45
7
8
Q1
L1
8.2
C43
0.1
C31
100/6.3
C10
0.1
R39
10k
D19
R13
10
R2
15k
C7
47/16
D21
A5V
C49
2.2
R4
15k
R11
33k
R38
10k
Q4
Z15
1
2
36
7
8
C3
1
R96
0
C108
47/16
Z18
1
2
36
7
8
R8
10k
D18
C36 0.1
Z11
1
2
36
45
45
45
45
45
7
8
R85
100
100
100
100
100
100
10k
10k
10K
10k
10k
C50
0.1
Z19
1
2
36
7
8
R56
10k
R1
10k
C29
2.2
E5
L2
8.2
Q6
1
S1
2
S2
3
S3
4
G
5
D1
6
D2
7
D3
8
D4
R3
10k
R48
0
DGND
R37
10k
DGND
C107
1
Z16
1
2
36
45
7
8
IC9
6
GND1
7
GND2
8
NC2
9 Y
C112
0.1
Q3
R41
4.7k
E9
2
1
C95
OPEN
IC5
1
NC
2
IN_A
3
GND
4
OUT_Y
5
VCC
R88
10k
CN3
OPEN
1
LED1
2
LED2
3
LED3
4
LED4
5
GND
6
GND
Attachment1
Attachment2
IC4
1
2
5V
C111
1
E1
Z1
10k
10k
1
2
3
6
7
8
X1
(27.0MHz)
C17
470/10
R19
0
E3
VLCD
IC4
(5/7)
(4/7)
(2/7)
(3/7)
(6/7)
13
12
TD1
R61
0
C24
47/16
R17
510
Z6
1
2
36
7
8
R84
100
5V
DGND
C4
0.1
C13
1
C8
OPEN
C22
0.1
C32
OPEN
C33
OPEN
C12
1
C9
OPEN
C16
0.1
C21
0.1
C5
240p
C11
0.1
C6
3.3/16
C27
C28
100/6.3
C1
4700/16
C2
4700/16
/NMI
/RESET
TA
GND
12
11
10
9
11
10
9
DC 9V IN
Important safety notice
Components identified by " " mark have special characteristics for safety.
When replacing any of these components, use only manufacture's specified parts.
Components identified by " " mark have special characteristics for safety.
When replacing any of these components, use only manufacture's specified parts.
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