Jadever JWE Service Manual - page 6
JADEVER SCALE CO., LTD
JWE service manual
4
2-3 Circuit diagram
Title
Number
Revision
Size
A1
Date:
11-May-2009
Sheet of
File:
E:\jadever\LX
资料档 \B称.ddb
Drawn By:
1
2
CN6
R48
1K,C
AVS2
C
O
M1
1
C
O
M2
2
C
O
M3
3
C
O
M4
4
S
E
MG
1
5
S
E
MG
2
6
S
E
MG
3
7
S
E
MG
4
8
S
E
MG
5
9
S
E
MG
6
10
S
E
MG
7
11
S
E
MG
8
12
S
E
MG
9
13
S
E
MG
10
14
S
E
MG
11
15
S
E
MG
12
16
S
E
MG
13
17
LCD3
2
3
1
Q3
1815
R32
10K
R33
10K
C16
AVS3
AVS9
AVS4
C17
1
2
BZ1
R38
10K
Y2
11.059M
R44
22k,C
R34
10K
R49
1K,C
CP14
0.1u,G
R21
15k,C
SEG7
1
SEG6
2
SEG5
3
SEG4
4
SEG3
5
SEG2
6
SEG1
7
SEG0
8
CS
9
RD
10
WR
11
DATA
12
Vss
13
OSC0
14
OSC1
15
VLCD
16
VDD
17
IRQ
18
BZ
19
BZ
20
COM0
21
COM1
22
COM2
23
COM3
24
SEG31
25
SEG30
26
SEG29
27
SEG28
28
SEG27
29
SEG26
30
SEG25
31
SEG24
32
SEG23
33
SEG22
34
SEG21
35
SEG20
36
SEG19
37
SEG18
38
SEG17
39
SEG16
40
SEG15
41
SEG14
42
SEG13
43
SEG12
44
SEG11
45
SEG10
46
SEG9
47
SEG8
48
U10
HT1621B
AVS11
1
2
3
4
CN9
RS232
CP20
0.1u,G
R25
330k,C
1
2
J4
A
14
B
13
G
15
Y0
12
Y1
11
Y2
10
Y3
9
D10
LED
P
4.
2
1
P
1.
0
2
P
1.
1
3
P
1.
2
4
P
1.
3
5
P
1.
4
6
P1.5
7
P1.6
8
P1.7
9
RST
10
P4.3
12
P3.0 / (RXD)
11
P3.1 / (TXD)
13
P3.2 / (not INT0)
14
P3.3 / (not INT1)
15
P3.4/(T0)
16
P3.5/(T1)
17
P
3
.
6 /
(
not
W
R
)
18
P
3
.
7 /
(
not
R
D
)
19
XT
AL
20
XT
AL
21
GND
22
P
4.
0
23
P
2.
0
24
P
2.
1
25
P
2.
2
26
P
2.
3
27
P
2.
4
28
P2.5
29
P2.6
30
P2.7
31
PSEN
32
ALE / not PROG
33
P4.1
34
not EA / VPP
35
P0.7
36
P0.6
37
P0.5
38
P0.4
39
P
0.
3
40
P
0.
2
41
P
0.
1
42
P
0.
0
43
V
CC
44
U8
SM5964
1
2
3
4
5
6
7
8
9
CN5
JWE
D5
1N4148
CP17
0.1u,G
D4
1N4148
R23
47k,C
Q10
A733
D6
LED
C4
0
R31
10K
1
3
2
Q5
TIP32
R12
1.5k,A
1
2
3
4
5
6
7
8
9
CN8
JCE
AVS1
R26
2.2k,C
R19
4.7k,C
1
2
J2
R45
100k,C
+
C13
470u
2
1
3
Q1
D313
R22
2/1w
R35
10K
C4
1
C20
10u,EL
1
2
CN4
ON/OFF
R41
1M,C
R20
1k,C
A
2
B
3
G
1
Y0
4
Y1
5
Y2
6
Y3
7
U11A
74LS139
R30
4.7K
R14
1k,C
C46
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
WP
7
VCC
8
U7
AT24C02
D8
LED
R18
100k
C
O
M1
1
C
O
M2
2
C
O
M3
3
C
O
M4
4
S
E
MG
1
5
S
E
MG
2
6
S
E
MG
3
7
S
E
MG
4
8
S
E
MG
5
9
S
E
MG
6
10
S
E
MG
7
11
S
E
MG
8
12
S
E
MG
9
13
S
E
MG
10
14
S
E
MG
11
15
S
E
MG
12
16
S
E
MG
13
17
LCD1
R10
2.2k,C
CP15
0.1u,G
R24
10k,C
1
2
CAL
R29
4.7K
R27
10k,C
C
O
M1
1
C
O
M2
2
C
O
M3
3
C
O
M4
4
S
E
G
M1
5
S
E
G
M2
6
NO
7
NO
8
NO
9
S
E
G
M6
10
S
E
G
M7
11
S
E
G
M8
12
S
E
G
M9
13
S
E
G
M10
14
S
E
G
M11
15
S
E
G
M12
16
S
E
G
M13
17
S
E
G
M14
18
S
E
G
M15
19
S
E
G
M16
20
S
E
G
M17
21
S
E
G
M18
22
S
E
G
M19
23
S
E
G
M20
24
LCD4
1
2
CN3
Battery
IN
1
OUT
3
GND
2
U6 LM2931
R46
1K,C
R16
1K,C
C4
3
R42
220Ω,C
3
1
2
Q7
2SC1815
+
C11
470u/25v
R13
10k,A
C18
3
1
2
Q6
C1815
R47
1K,C
R15
1k,C
Q9
2SC1815
R40
470,C
C12
470P
R9
2.2k,C
D3
1N4004
1
2
J3
C4
4
CP19
0.1u,G
C21
20p
R36
10K
R50
1K,C
2
3
1
Q4
A733
NC
1
CURLIM
2
CURSEN
3
IN-
4
IN+
5
Nref
6
V-
7
NC
8
Vz
9
Vout
10
Vc
11
V+
12
COMP
13
NC
14
U3 LM723
D9
LED
C47
C
O
M1
1
C
O
M2
2
C
O
M3
3
C
O
M4
4
S
E
MG
1
5
S
E
MG
2
6
S
E
MG
3
7
S
E
MG
4
8
S
E
MG
5
9
S
E
MG
6
10
S
E
MG
7
11
S
E
MG
8
12
S
E
MG
9
13
S
E
MG
10
14
S
E
MG
11
15
S
E
MG
12
16
S
E
MG
13
17
LCD2
1
2
J6
1
2
CN2
EH-Adpator
C19
1
1
2
2+
3
3
4
4+
5
5
6
6+
7
7+
8
8
9
9+
10
10
11
11+
12
12
LED2
AVS10
R28
4.7K
CP13
0.1u
1
2
TP4
R40
470.C
D7
LED
IN
1
OUT
3
GND
2
U5 LM2930
CP18
0.1u,G
R37
10K
1
2
J5
C4
2
D2LED-GR
R39
4.7k.C
R17
4.7k,C
C22
20p
2
3
1
Q2
C1815
CP16
0.1u
S
CL
K
TXD
RXD
AD
C
S
P3.2
RXD
AD S
DI
AD S
DO
ONF
P
1.
7
P
1.
4
P
4.
0
P
1.
4
+5VD
+5VD
+5VD
+5VD
+5VD
+5VD
BAT
+5VD
+5VD
+5VD
B-SCALE V3.4
V3.4
1
2
3
4
D1
+
C14
470u,EL
+
C15
470u,EL
+5VD
+5VA
ONF
P1.7
P2
P
4.
0
P2
U11 16
U11 8
+5VD
+5VD
Vs
s
3
Out
1
Vdd
2
U4
S80841CL
R53
20K
R52
10K
1
2
J7
WR
DATA
CS
P4.1
P
4.
1
1
2
3
CN10
C10
1u,T
Y1
CP11
104,G
CP10
104,G
R4
237K
R8
1M,C
C7
1u,T
C9
20p
C8
20p
R3
237K,A,T
+5VD
+5VA
CP9
104,G
+5VA
C2
1u,T
ANI1+
1
AIN1-
2
C1
3
C2
4
VA+
5
VA-
6
A0
7
A1
8
OSC2
9
OSC1
10
SCLK
11
SDO
12
SDI
13
CS
14
VD+
15
DGND
16
VREF-
17
VREF+
18
NC
19
NC
20
U6
5530
C6
100p
C4
100p
AIN2-
AIN2+
C5
100p
SCLK
AD SDI
AD SDO
AD CS
MCB6
FB1
E+
1
G
3
E-
2
S+
4
S-
5
CN1
LOAD-CELL
R2
100,A,T
MCB7
MCB8
CP5
0.1u,G
AVS5
MCB1
CP6
0.1u,G
AVS6
CP7
0.1u,G
AVS7
CP8
0.1u,G
AVS8
MCB2
MCB3
MCB4
MCB5
R1
100,A,T
+5VA
C1
10u,T
R5
10k,C
3
1
2
Q11
A733
R6
4.7k,C
R7
10k,C
BAT
+5VD
P3.2
C39
P
2.
0
1
2
3
CN7
P5.0
R63
10k,C
+5VD
P
2.
0
P5.0
R62
2.2K,C
Q12
C1815
R61
22K,C
1
1
2
2+
3
3
4
4+
5
5
6
6+
7
7+
8
8
9
9+
10
10
11
11+
12
12
LED1
JWE
JCE
JWE
JCE
JCE
JCE