G2615 Control Board Schematic - Lincoln LN-742 Service Manual

G-3

G2615 CONTROL BOARD SCHEMATIC

512
6 7
6
J1 D31
R 8
D 3 0
1.00M
C 4 7 C 4 8
0.1 0.1
5 0 V 5 0 V
4 8 8
3
1
R 9 RG1
68.1K X11
5 0 0 8 REF
R 8 3 RG2
2 5
68.1K
512
C 4 9 C 5 0
0.1 0.1
5 0 V 5 0 V
D 3 2
R 9 7
1.00M
D 3 3
J1
11
4 8 8
21
518 J1
5 R 9 2
3 3 2
C 4 3
W F S 517 J1
CW
4 R14
4 . 7 5 K
5 K
C 2
516 J1
3 R12
681
5 4 2
5 0 0 5 0 0
1 O P T I O N A L R E M O T E
W I R E F E E D S P E E D
J1
4
N.B.
J 5
6
J 5
5
J 5
S W I T C H I N G
P O W E R S U P P L Y
D 4
1 N 4 9 3 6
7 6
VCC OUT
8 2
VREF VFB
4 RT/CT COMP 1
C 8 C 9
5 GND CS 3
1 2 0 0 1 2 0 0
X 8
1 0 0 V 1 0 0 V
C14
2 7 0 0 p
5 0 V
R 2 6
3 3 2
C10
2 0
5 0 V C11
0.1
5 0 V
C12
2 7 0 0 p
5 0 V
C13
2 7 0 0 p
5 0 V
J1
5 0 5
7
5 0 0 M
MOLEX CONNECTORS 48 20
C17
1
6 1 2 0.1
X1 X 3
J2 5 0 V
J1
68HC11A1 7 4 H C 3 7 3
J3
23 10
7 12
3 4
1 4 1 3 1
J6
J4 J5
J7
5 8 4 2
6
NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is provided
for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.
5 0 5
12
15
16
13
D 2
A
19
X10 14
6 12
10
5 0 0
R 4
1.00K
10
6
9
D 3
9 X10 7
R 3
C 8
X10 8 5
1.00K
B 7
10
6
5
5 0 0
5 0 5
4
5 0 5
3
1
C 4 0 22
20
5 0 5
27
5 0 0 8 6
26
5 0 0
5 0 0
X 6 X 6
B C
5 0 5
9 10 5 4
G E A R B O X
5 0 5
S E N S E
3 R16
J 5 4 . 7 5 K C 4
R18
4 . 7 5 K C 3
5 0 0
5 0 0
5 0 5
R 2 0
1.00K
C 5
1.0
C 6
3 5 V
4 8 8 -12.8 VDC
.022
2 0 0 V
5 0 0
2
T1 A 10 B
T1 C 7
1.8
D 6
9
D 7
4 2 0 V
1 N 4 9 3 6
1 N 4 9 3 6
5 0 0 M
D 8
512 + 1 2 . 8 V D C
+ 5 V D C
D
Q1
D 5 5 0 5
G 18A X 9
2 3
R 2 8
2 0 0 V
IN
S OUT
26.7 4 A
2 0 0 V
C16
1 GND
18
DZ1 15V
16V
1W
C
C15
6
3 3 0 0
T1
5 0 V
7
5 0 0
5 0 0 M
512
28 14 3 4
7
C21 C 2 2
C18 C19 C 2 0
0.1 0.1
0.1 X 4 0.1 X 6 0.1 X 5 X10 X11
5 0 V 5 0 V
5 0 V 5 0 V 5 0 V
2 7 C 6 4 L M 2 9 0 1 L M 2 2 4
A D 6 2 0
14 7 12 11
4
5 0 0 5 0 0
4 8 8
ELECTRICAL DIAGRAMS
u C O M P U T E R
5 0 5
C 3 3
20
9 Q 3 V c c
Q 4 X 3 L E 11
8
Q 5 D 3
6 13
Q 2 D 4
5 Q 1 D 5 14
Q 6 D 2 7
Vdd
Q 7 D 1 4
X 7 RES
C41
2 17
Q 0 D 6
0.1 S-8054HN
C 3 6
1 18 5 0 V
O E D 7
R 7 6
Vss
G N D 7 4 H C 3 7 3 D 0 3
1 0 M
1 / 2 W
5 0 0
4 . 0 M H z
5 0 0
130
Y1
48
24 M O D B V d d
25 39
M O D A / R S T
28 26 41 1 0 0 V
A 0 V c c A S / I R Q
11 31 X1 40 2 2 p
A 1 D 0 A D 0 / X I R Q
C 3 4
5 0 0
A 2 D 1 12 32 A D 1 X T A L 30
A 3 X 4 D 2 13 33 A D 2 E X T A L 29
15 34 18
A 4 D 3 A D 3 P E 1
16 35 2
A 5 D 4 A D 4 P A 6
A 6 D 5 17 36 A D 5 P E 0 17
A 7 D 6 18 37 A D 6 P A 4 4
V p p D 7 19 38 A D 7 P A 3 5
25 16 44
/ O E A 8 A 8 P D 2
24 15 45
/ C E A 9 A 9 P D 3
A 1 4 A 1 0 21 14 A 1 0 P D 4 46
A 1 3 A11 23 13 A11 P D 5 47
14
2 7 C 2 5 6 2 12 7
G N D A 1 2 A 1 2 P A 1
11 6
A 1 3 P A 2
10 1
A 1 4 P A 7
9 A 1 5 P A 5 3
28 R / W V R L 21
27 22
E V R H
68HC11A1
8 43
P A 0 P D 1
23 42
V s s P D 0
19 P E 2 P E 3 20
512
5 0 0
5 0 5
D12
J1
R 3 2
10
8
4 7 5 X 5
W H I T E A
14
D11 9
C 3 7
J1
2
T R I G G E R
W H I T E
5 0 0
5 0 5
D10
J 3
1
1
R E D
J 3 A 3
X 6
T A C H . 2
2 R 3 9
B L U E 3 3 2
J 3
3
B L A C K
C 2 6
2 7 0 0 p
D 9
5 0 V
5 0 0
512
J 2
5 0 5
1
C 2 3
0.1
5 0 V
J 2
A R C
2 R41
10
X 5
4 . 7 5 K
B L U E
D 13
C U R R E N T
11
C 2 4
4.7
3 5 V C 2 5
S E N S E
J 2
3
B L U E
5 0 0
C51
0.1
5 0 V
NOTES :
N . A . S I N C E C O M P O N E N T S O R C I R C U I T R Y O N A P R I N T E D C I R C U I T B O A R D M A Y C H A N G E
W I T H O U T A F F E C T I N G T H E I N T E R C H A N G E A B I L I T Y O F A C O M P L E T E B O A R D , T H I S D I A G R A M M A Y
N O T S H O W T H E E X A C T C O M P O N E N T S O R C I R C U I T R Y O F C O N T R O L S H A V I N G A C O M M O N C O D E
N U M B E R .
N . B . P R E S E N T O N L Y O N T H E L N - 7 4 2 H M O D E L S O N L Y
5 4 2
512
M O T O R C I R C U I T R Y
5 0 5
4 . 7 5 K 4 . 7 5 K
D 2 7
R 7 5 R 9 5
1 N 4 9 3 6
C 4 4
3 3 0 p 9 6
V d d V b
5 0 V
10 7
H I N X 2 H O
5 0 0
C 3 2 8 n c V c c 3 C31
0.1 0.1
14 n c n c 4
12 5 0 V 5 0 V
D
X 6 11 12 L I N V s 5
R 9 4
13
5 0 0 11 1
4 . 7 5 K S D L O
C 4 5 13 2
V s s C O M
D 3 6
3 3 0 p C 4 2
C 3 0
4 A
5 0 V 0.1 1.0
2 0 0 V
5 0 V 3 5 V
5 0 5
5 0 0
1 0 0 V
2 2 p
C 3 5
6
C
1
X 5
7
R 6 4
10K
C 2 7
C 2 8 C 2 9
3 3 0 p 1.0
5 0 V 3 5 V
R 6 3
100
D 2 3
512
R 5 9
2 0
OCI1
1 4 5 W
TP1
7 5 V
2 0 J
2 6
Q 5
6 0 0 m A
4 0 V
D21
5 0 5 1 N 4 9 3 6
5 0 0
Q 2
5 6 0 0 m A
4 0 V
2
X 5 B
4
R 5 5
100
Q 3
6 0 0 m A
D Z 2
4 0 V
16V
S O L E N O I D
1W
D R I V E R
5 0 0
512
5 0 5
R 4 5
10K
R 5 0
2 7
2 W
D17 D18 D19 D 2 0
MISO
R 4 9
4 7 5
MOSI
R 4 8
4 7 5
SCK
R 4 7
4 7 5
LATCH
R 4 6
4 7 5
D13 D14 D15 D16
5 0 0 GENERAL INFORMATION
E L E C T R I C A L S Y M B O L S P E R E 1 5 3 7
C A P A C I T O R S = M F D (
R E S I S T O R S = O h m s (
D I O D E S = 1 A , 4 0 0 V
Ch'ge.Sht.No. THE LINCOLN ELECTRIC CO.
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON HOLES SIZES PER E-2056
1-28-94
ON 2 PLACE DECIMALS IS + .O2 CLEVELAND, OHIO U.S.A.
ON 3 PLACE DECIMALS IS + .OO2
S C A L E
ON ALL ANGLES IS + .5 OF A DEGREE
MATERIAL TOLERANCE ("t") TO AGREE DR. KK D A T E
WITH PUBLISHED STANDARDS
G-3
B L A C K
1
J 5
M
D 2 6 D
Q 7
1 N 4 9 3 6
G 3 3 A
2 0 0 V
S
C 4 6
.33
R71
2 0 0 V 2
15.0
C 3 8 W H I T E
100
0.1 J 5
R 9 8
5 0 V
D 2 5
D
1 N 4 9 3 6
Q 6
G
3 3 A
R 7 0
2 0 0 V
S
150
5 0 0 M
R 6 6
6.81K
2
X10
1
D
3
5 0 0
C 3 9
2
9
J1
5 0 0
2 - 4 O U T P U T
4
8
J1
512
J 7
2
J 6
2
O P T I O N A L
G A S W A T E R
J 6 S O L E N O I D S O L E N O I D
1
J 7
1
D
Q 4
15A
6 0 V
G
S
5 0 0 M
512
5
J 4
512A
2
J 4
554
4
J 4
553
8
T O D I S P L A Y
J 4
P.C. BOARD
552
1
J 4
551
7
J 4
500
6
J 4
5 0 0
LAST NO. USED
R- 98
C- 51
. 0 2 2 / 5 0 V U N L E S S O T H E R W I S E S P E C I F I E D )
LABELS D- 36
1 / 4 W U N L E S S O T H E R W I S E S P E C I F I E D )
( U N L E S S O T H E R W I S E S P E C I F I E D )
S U P P L Y V O L T A G E N E T
P O W E R S U P P L Y S O U R C E P O I N T
C O M M O N C O N N E C T I O N
F R A M E C O N N E C T I O N
E A R T H G R O U N D C O N N E C T I O N
EQUIP. LN-742
T Y P E
SCHEMATIC, CONTROL P.C. BOARD
S U B J E C T
NONE
SHT. G
OBS 2614
8-17-92 CHK. SUP'S'D'G. NO.
LN-742