Service manual

FO-DC600U
A A
B B
C C
D D
E E
F F
G G
H H
6 6 5 5 4 4 3 3 2 2 1 1
DGDG
DG
DG
DG
+5V
DG
+5V
DGDG
+5V
DG
DG
DG
DG
DG DG
DG
+5V
+5V
DG
+5V
+5V
LD2 1
LD4
LD7
LD1 1
LD5
LD6
LD0 1
LD3 1
RS
E
LD0 1
LED2
LED3
LD1 1
LED7
LED4
LD2 1
LEDEN2
LED5
LD0 1
LED8
LD2 1
LD4
LED1
LD4
LD3 1
LEDEN1
LED6LD5
LED9
LED10
LD1 1
LD5
LD3 1
LD01
LD21
LD4
LD5
LD11
LD31
/SEN7 1
/SEN6 1
/SEN5 1
/SEN4 1
/SEN0 1
/SEN1 1
/SEN2 1
/SEN3 1
PLTSW 1 LEDEN1
LEDEN2
LED11
TH1
TH2
LED1
LED3
LED7
LED8
LED9
LED10
LED11
LED2
LED4
LED6
LED5
TH1
TH2
LD7
LD6
E
RS
+
C13
R13
C7
2200P
CNCOG
GND
14
5V
9
VO
12
RS
11
R/XW
10
E
13
LD0
8
LD1
7
LD2
6
LD3
5
LD4
4
LD5
3
LD6
2
LD7
1
1
3
5
7
9
11
13
15
17
19
21
23
25
27
20
18
16
14
12
10
8
6
4
2
28
26
24
22
CNPNA
B28B-PHDD
GND
1
PLTSW
3
SEN7
5
SEN6
7
SEN5
9
SEN4
11
SEN3
13
SEN2
15
SEN1
17
SEN0
19
+5V
21
/BKLON
23
E
25
RS
27
GND
2
LEDEN1
4
LD5
6
LD4
8
LD3
10
LD2
12
LD1
14
LD0
16
LEDEN2
18
TH1
20
TH2(GND)
22
GND
24
LD7
26
LD6
28
FB1
C12
0.1u
IC3
VDD
16
CLR
1
6D
14
5D
13
4D
11
3D
6
2D
4
1D
3
6Q
15
5Q
12
4Q
10
3Q
7
2Q
5
1Q
2
GND
8
CLK
9
C10
0.1u
R16
100K
+
C5
+
C4
N.M.
R17 100K
R14
CNBKL
B2B-PH-K-S
1
2
+
C11
C8
N.M.
+
C2
C9
2200P
+
C1
R12
IC2
VDD
16
CLR
1
6D
14
5D
13
4D
11
3D
6
2D
4
1D
3
6Q
15
5Q
12
4Q
10
3Q
7
2Q
5
1Q
2
GND
8
CLK
9
CNLED
CNLEDA
HLW15S-2C7
GND
3
LED7
13
LED8
11
LED9
9
LED10
7
LED11
5
LED3
14
LED1
4
LED2
6
LED4
12
LED6
10
LED5
8
5V
15
TH2
1
TH1
2
22u/16V
JUMPER
FLIP-FLOPS
TC74HC174AP
33u/16V
22u/16V
TC74HC174AP
FLIP-FLOPS
• NO NUMBER R15
33u/16V
20x2 Characters
Operation Panel PWB circuit 2/3
Note: Since the parts of this PWB cannot be supplied, change it as a unit.
6 – 28