Lincoln Electric LN-25 SVM179-B Service Manual page 94

G-16
sChEmaTiC - lN-25 prO CONTrOl pC BOarD - CODEs 11387, 11388, 11507, 11508 (G4745-1) pG 3
ElECTriCal DiaGrams
RXD
RXD
ROUT
9
RS232_TX
RS232_TX R19 DOUT
13
200
INVALID
10
FORCEON
12
+5V R37 FORCEOFF
16
3.32K
0.1W
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
RIN R36 RS232_RX
8
RS232_RX
TXD
200
DIN
MAX3221 11
0.1uF 50V
TXD
C2-
6
C25
C2+
5
X2
V-
7
V+
3 0.1uF 50V
C1-
4
C29
C1+
2
EN
1
C27 C26
0.1uF 0.1uF
50V 50V
GND
PROPRIETARY & CONFIDENTIAL:
SINCE COMPONENTS OR CIRCUITRY ON A
PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGE-
ABILITY OF A COMPLETE BOARD, THIS
COMPONENTS OR CIRCUITRY OF CONTROLS
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
.022/50V
CAPACITORS = MFD ( UNLESS OTHERWISE SPECIFIED)
RESISTORS = Ohms ( 1/4W UNLESS OTHERWISE SPECIFIED)
1A,400V
DIODES = (UNLESS OTHERWISE SPECIFIED)
RS232
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.
EQUIPMENT TYPE:
FLEXIBLE POWER FEEDER
DESIGN INFORMATION
9/24/2009
DRAWN BY: JPZ
SUBJECT: SCHEMATIC, CONTROL PCB
ENGINEER: JPZ
DIAGRAM MAY NOT SHOW THE EXACT REFERENCE:
MATERIAL APPROVAL PROJECT
NA
APPROVED: --------- 9-12-2008
DISPOSITION: DATE: NUMBER:
HAVING A COMMON CODE NUMBER.
G-16
LAST NO. USED
_
R-
SEE PAGE 1
_
C-
LABELS D- _
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
PAGE 03 OF 05
DOCUMENT DOCUMENT
NUMBER: REVISION:
4745-1H0 A
G
CRM39801
lN-25™ prO