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ELECTRICAL DIAGRAMS
G-17
COMMANDER 400
SCHEMATIC - ENGINE PROTECTION PC BOARD
CONTROL
LAMP DRIVER
+12V BATT.
PCB
THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY
Ch’ge.Sht.No.
TO FUEL
TO OIL
LVL LED
LED
TO OIL
TEMP LED
PRESS LED
10
05-12-95
DR.
CAPACITORS =
EQUIP.
TYPE
THE LINCOLN ELECTRIC CO.
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
5
SUBJECT
6
C-
LAST NO. USED
DIODES =
X-
3
MM
NO.
SUP’S’D’G.
NONE
D-
DATE
UNLESS OTHERWISE SPECIFIED)
34
R-
ELECTRICAL SYMBOLS PER E1537
MFD
1A, 400V
1/4W
DZ-
.022/50V
RESISTORS = Ohms (
(
(UNLESS OTHERWISE SPECIFIED)
UNLESS OTHERWISE SPECIFIED)
B.K.
CHK.
SCALE
SUPPLY
COMMANDER 400
LABELS
SHT.
EARTH GROUND CONNECTION
17500
FRAME CONNECTION
VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
GENERAL INFORMATION
FILE: M17500_1BA
TO ALT
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
AND IS NOT TO BE REPRODUCED, DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF
THE LINCOLN ELECTRIC CO.
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
UNLESS OTHERWISE SPECIFIED TOLERANCE
27
35V
C6
X1
2
4
5
4.75K
R20
10.0K
R18
1.00K
R25
Q1
2N4401
10.0K
R24
1.00K
R21
D1
51.1K
R23
4.75K
R22
50V
0.1
C5
P23
2
P22
11
P22
14
+5V BATT
+5V BATT
COMMON (EPD) COMMON (EPD)
ON TEST TIMER
2 SEC LAMPS
LM2901
TO LAMPS
ON/OFF INPUT
P22
4
P22
8
P22
1
M
OIL TEMP SWITCH F.B.
TO OIL TEMP SHUT-
FROM OIL TEMP SWITCH
DOWN LOGIC INPUT
POST ON FUEL GAUGE
FROM FUEL LEVEL SENDER
TO COMMON
LM2901
(BATT)
NUMBER.
22.1K
R15
MATERIAL TOLERANCE ("t") TO AGREE
ON ALL ANGLES IS + .5 OF A DEGREE
ON HOLES SIZES PER E-2056
X1
13
10
11
LM2901
X1
3
12
P22
7
4.75K
R14
ON 3 PLACE DECIMALS IS + .OO2
COMMON (EPD) COMMON (EPD)
COMMON (EPD)
COMMON (EPD)
+5V BATT
COMMON (EPD)
+5V BATT
DOWN LOGIC INP
FUEL LEVEL F.B.
TO FUEL SHUT-
LM2901
WITH PUBLISHED STANDARDS
ON 2 PLACE DECIMALS IS + .O2
NOTES :
TO ALT SHUT-
4.75K
R7
5.11K
R13
3.92K
R34
4.75K
R12
3.01K
R10
4.75K
R4
P23
6
COMMON (EPD)
COMMON (EPD)
5K
CW
R8
2
1
3
COMMON (EPD)
+5V BATT
1W
10V
DZ2
1.00K
R11
P22
5
50V
0.1
C4
10.0K
R16
LM2901
DOWN LOGIC INP
ALT VOLTAGE F.B.
CONNECTION ON ALT
FROM SENSE
C10
50V
0.1
C3
50V
0.1
C2
1W
10V
DZ1
P23
1
X1
1
6
7
4.75K
R6
4.75K
R3
X1
14
8
9
68.1K
R9
P23
5
50V
0.1
C1
2.21K
R2
10.0
R1
22.1K
R5
1W
20V
DZ4
P22
12
1W
20V
DZ6
1W
20V
DZ5
1W
20V
DZ3
D5D4
P22
13
D3
17500
D2
I3
I1
I0
O0
O3
O2
O1
MC1413BP
O6
O4
I6
GND
I4
O5
I5
I2
CLAMP
X3
4
7
6
1
2
15
11
12
3
9
10
13
14
5
16
8
267
R28
P23
7
267
R33
P23
4
267
R29
267
R32
267
R30
267
R27
P23
3
P23
8
267
R26
P22
9
P22
10
P22
2
P22
6
P22
3
COMMON (EPD)
COMMON (EPD)
COMMON (EPD)
+5V BATT
COMMON (EPD)
267
R31
ENGINE PROTECTION P.C. BD. SCHEMATIC
FV
12-15-95A
G-17
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NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.