Lincoln Electric LN-25 PRO DUAL POWER Service Manual page 104

G-12
SchEmaTic - prESET pc bOarD - (G4748) pG2
DETECT 42V SOURCE
D17 D12
1A 1A
41 1 J12
600V 600V
D18 D13
1A 1A
600V 600V
J12
42
4
+5V
J12
5
RELAY
PG. 1
FAN_DRIVE
PG. 1
FAN_CS
PG. 1
C:\Jobs\G4749-1F0\G4748.sbk(02;17)
ElEcTrical DiaGramS
V_CC
BLOCK J
6.81K
6.81K
+5V
C36
6.81K
330uF OUTPUT
100V TO BLOCK I
2
D14
3
0.2A
R68
70V
2.21K
DETECT_SOURCE
1 PG. 1
10K
C10
4.7uF
DZ1
C19
35V
15V
5.62K 0.1uF
3W 50V
10K
COM COM
V_CC
1 1 1
D22
CR2 CR1 CR3
1A
12VDC 12VDC 12VDC J9
600V CR2-3
1
4 3
2 2 2
CR2
Q3
10A
5
R95 100V
J9
2 CR2-5
200
0.1W
10K
0.063W
J9
3 CR1-3
COM
4 3
CR1
5
J9
4 CR1-5
+5V
J10
5
D21
1A
600V
J10
7
Q4
10A
R102 100V
200
0.1W
10K
0.1W
COM
R103
1.21K
0.1W
C35
1 1 1 1
330pF
100V
COM
COM
Wed Nov 12 11:35:56 2008
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
+5V
DATA0
PG. 1
DATA1
PG. 1
DATA0
D7 Q7
9 12
DATA1
DATA2 D6 Q6
8 13
PG. 1 DATA2
D5 Q5
7 74ACT573 14
DATA3
D4 Q4
6 15
DATA4
DATA3
D3 Q3
PG. 1 5 16
DATA5 X3
D2 Q2
4 17
DATA6
D1 Q1
3 18
DATA4
DATA7
PG. 1 D0 Q0
2 19
LE
11
DATA5 OE
1
PG. 1
DATA6
PG. 1
COM
DATA7
PG. 1
1
OE
11
LE
2 19
D0 Q0
3 18
D1 Q1
4 17
D2 Q2
X4
5 16
D3 Q3
6 15
D4 Q4
7 74ACT573 14
D5 Q5
8 13
D6 Q6
9 12
D7 Q7
INPUTS FROM BLOCK I
DISPLAYS
33.2
11
R29 A
7 DISP2
B
R30
33.2
33.2 4 12
C DIGIT1
R22
2 9
D DIGIT2
R21
1 8
33.2 E DIGIT3
33.2
16 1
R20 10 6 O0 I0
F DIGIT4
15 2
R19 5 O1 I1
G
33.2
LTC-5723 14 3
33.2 O2 I2
3
R18 DP
13 4
O3 X1 I3
R17
12 5
33.2
33.2 O4 I4
MC1413BD
R32 11 6
O5 I5
R31 10 7
O6 I6
33.2
33.2
R16
11
A
R15 7 DISP1
33.2 B
33.2
4 12
R36 C DIGIT1
2 9
R35 D DIGIT2
33.2
33.2 1 8
E DIGIT3
R34
10 6
F DIGIT4
R33
5
G
33.2
LTC-5723
3
DP 7 8
DIGIT8
Q1
3A
50V 2
1
10K
COM
COM
5 6
Q1
3A
50V 4
3
COM
33.2
R10
R11 LED4
33.2
33.2
LED3
R38
R37
33.2 5 6
33.2 LED1
R1 Q2
3A LEDS
LED2
R2
50V 4
33.2
33.2 3
R4
R3
10K
33.2 LED8
COM
33.2
R9
R8 COM
33.2
+15V
R5
1K LED7 LED6 LED5
7 8
.05A .05A .05A
R6
Q2
THERMAL LEDs
1K
3A THERMALS
50V 2
1
COM 10K
COM
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
CAPACITORS = MFD (
1/4W
RESISTORS = Ohms (
DIODES = 1A,400V
PROPRIETARY & CONFIDENTIAL: THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
TO OTHER PARTIES, OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
SINCE COMPONENTS OR CIRCUITRY ON A EQUIPMENT TYPE:
DESIGN INFORMATION
PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGE- DRAWN BY: MFN/JPZ 11-12-2008
SUBJECT:
ABILITY OF A COMPLETE BOARD, THIS
ENGINEER: APM
DIAGRAM MAY NOT SHOW THE EXACT REFERENCE:
COMPONENTS OR CIRCUITRY OF CONTROLS MATERIAL NA
---------
APPROVED:
DISPOSITION:
HAVING A COMMON CODE NUMBER.
G-12
BLOCK K
DIGIT1
PG. 1
DIGIT2
PG. 1
DIGIT1
DIGIT3
DIGIT2
PG. 1
DIGIT3
DIGIT4 DIGIT4
PG. 1
DIGIT5
DIGIT6
DIGIT5
DIGIT7
PG. 1
DIGIT6
PG. 1
DIGIT7
PG. 1
DIGIT8
PG. 1
LEDS
PG. 1
THERMALS
PG. 1
LAST NO. USED
_
R-
SEE PAGE 1
C- _
.022/50V UNLESS OTHERWISE SPECIFIED)
LABELS D- _
UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
LN-25 PRO
PAGE 02 OF 02
SCHEMATIC, PRESET PCB DOCUMENT DOCUMENT
NUMBER: REVISION:
4748-1F0 A.01
APPROVAL PROJECT G
------- 5021492
DATE: NUMBER:
lN-25™ prO DUal pOWEr