Jadever JCL-30K Service Manual

2-3 Power circuit diagram
JADEVER SCALE CO., LTD
MCB1 MCB2
+5VA
+5VD
BAT
R34
10k,C
A733
3
Q10
R35
10k,C
R36
10k,C
+5VD
CP17
0.1u,G
CN1
E+
1
E-
2
G
3
S+
4
S-
5
LOAD-
CELL
R38 R39 R40 R41 R42 R43
R44 R45R46
10K,C10K,C10K,C1
0K,C
10K,C10K,C10K,C10K,C10K,C
KIN1
KIN2
KIN3
KIN4
KIN5
+5VD
C
N
8
9
8
7
6
5
4
3
2
1
FB1
AVS1
AVS2
MC
B3
R1
1M,A,T
AV
S3
AV
S4
MCB5
MCB
7
MCB4
0.1u,
G
CP5
0.1u,
G
CP7
MCB6
MCB
8
C1
10u,T
0.1u,G
CP6
0.1u,G
CP8
R2100,A,T
R3 100,A,T
1 ANI1+
2 AIN1-
3
C1
U
6
AIN2+NC
20
AIN2-NC
19
VREF+
18
+5VA
R6
237K,A,T
R63 R62 R61 JWEL
4
C2
VREF-
17
C23 R5 CP15
+5VD
C22
LCD-CS
LCD-WR
7 P1.5
8 P1.6
P0.4 39
P0.5
38
CN10
3
C5
C4
1000p
C6
+5VA
CP11
C10
104,G
1u,T
5
VA+
6
VA-
7
A0
DGND
16
VD+
15
CS
14
ADCS
C9
+5VD 1u,T
CP10
104,G
237K,A,T
R
32
10u,
EL
LCD-DATA
9 P1.7
10
RST
U7
P0.6 37
P0.7
36
2
1
RTC
+5VD
1000p 1000p
8
A1
9 OSC2
SDI
13
SDO
12
ADSDI
ADSDO
1u,T 104,G
RXD
P3
TXD
P3.2
11 P3.0 / (RXD)
12 P4.3
13 P3.1 / (TXD)
14 P3.2 / (not INT0)
15 P3.3 / (not INT1)
16 P3.4/(T0)
AT89C51
/52
not EA / VPP 35
+5VD
P4.1
34
ALE / not PROG
33
PSEN
32
P2.7 31
P2.6
30
15
G
13
B
14 A
U9
B
Y3
9
Y2
10
Y1
11
Y0 12
3 Q92SC1815
C7
Y2
R4
1M,C C
8
10 OSC1 SCLK
11
5530
SCLK
CP18R31R30R2
9
0.1u,G
+5VD
17 P3.5/(T1) P2.5
29
22k,
C
R25
+5VD
CP16
0.1u,G
R52
R27
220Ω,C
20p 20p
-5VD
C36
U11
C35
470u
5
VOUT CAP-
4
A733 R5
4
560R,C
6
LV
GND
3
7
DSC
CAP+
2
220u,EL
24C02A U8 CW
1
2
CN6
Y1
C20 11.059MHz C21
3
Q8
CN7
1
2
330k,C
R53
20k,C
Q11
2SC1815
+5VD
8
V+
76
60
NC
1
20p
R28
1M,C
20p
TP1 TP2
TP3
CAL
EH-
BUZZER
CN2
1
AVS5
FUSE
-5VD
BZ
D8
1N4148
U5
4 2 +
C11
2 Q1 3 R7
D313 2/1w,C
R8
R9
R55
1.5k,A
D2 1N4004
CN3
CP12
CN9
ON/O
FF
AVS7
R64
47k,C
R66
47K,C
D4
R22
3 2
Q6 2SB857
BAT
U3
LM2930
1
IN
OUT
3
+5VD
2
EH-Adpator
AVS6
2 J1 1
4.7k,C 1k,C
R56
10k,A
1
2
Battery
+
C12
470u,EL
0.1u,G
3 Q5
2SC1815
D3 1N4148 1N4148 C2
104P
330k,C
R23
2.2k,C
C15
220u,EL
C16
470u,EL
R65
10k,C
U15A
R20
U15B U15C
1
G
3
B
2 A
U9A
Y3
7
Y2
6
Y1
5
Y0 4
U1
LM723
1
NC
C13
NC
14
470P
1 2 3 4 5 6
1M,C
R21
330k,C
3 Q7
2SC1815
R24 10k,C
U4
81350
1
Out
Vdd
2
+5VA
2 CURLIM COMP
13
74LS139 D5 D6 D7
+5VD
3 CURSEN
V+
12
U9.8
CN11
1
2
4
IN-
5
IN+
6 Nref
Vc
11
Vout
10
Vz
9
U9.16 +5VD
OK
R51
HI
R49
LO
R50
LCD-WR
LED
LCD-CS
LCD-DATA
3
4
5
6
7
V-
NC
8
R17 C18
C19
470u,EL
1k,C 1k,C 1k,C
+5VD
R12
1k,C
D1LED-
RL
R14
1K,C
R15
4.7k,C
R16
100k,C
4.7k,
C
Q4
A733 3
R18
1k,C
220u,EL
CN4
4
3
2
1
RS232
+5VD
TXD
RXD
R13 Q2 3 Q3 3
1k,C 2SC1815
2SC1815
R19
10k,C
Title
Size
A2
Numbe
r
JCL-JPL
V1.1.sch
Revision
Date: 27-Feb-2009 Sheet of

Jadever JCL-30K Specifications

General

Brand	Jadever
Model	JCL-30K
Category	Scales
Language	English