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ELECTRICAL DIAGRAMS
G-19
COMMANDER 400
SCHEMATIC - METER PC BOARD
7
14
/Q1
CLOCK 1
SET 1
RESET 1
Q1
54HC74
RESET 2
N.C.
DATA 1
DATA 2
GND
Q2
CLOCK 2
VCC
SET 2
X4
10
1
11
4
2
3
6
9
13
12
5
8
X5
13
12
H
Q
A
C
Q
Q
CLK
Q
Q
Q
B
Q
A1
A2
E
F
G
Q
R
D
74HC164
X1
6
4
2
12
13
1
10
11
8
5
3
9
H
Q
A
C
Q
Q
CLK
Q
Q
Q
B
Q
A1
A2
E
F
G
Q
R
D
74HC164
X2
6
4
2
12
13
1
10
11
8
5
3
9
X5
11
10
+5V
+5V
+5V
+5V
+5V
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
ON HOLES SIZES PER E-2056
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON ALL ANGLES IS + .5 OF A DEGREE
NUMBER.
ON 2 PLACE DECIMALS IS + .O2
WITH PUBLISHED STANDARDS
NOTES :
ON 3 PLACE DECIMALS IS + .OO2
MATERIAL TOLERANCE ("t") TO AGREE
17637
M
COMMANDER 400
M
GENERAL INFORMATION
1/4W
.022/50V
42
2
LABELS
R-
UNLESS OTHERWISE SPECIFIED)
C-
UNLESS OTHERWISE SPECIFIED)
D-
2
5
LAST NO. USED
DZ-
Q-
1A, 400V
DIODES =
VOLTAGE NET
(UNLESS OTHERWISE SPECIFIED)
SUPPLY
FRAME CONNECTION
ELECTRICAL SYMBOLS PER E1537
THE LINCOLN ELECTRIC CO.
TYPE
SUBJECT
SCALE
EQUIP.
METER P.C. BOARD SCHEMATIC
05-12-94
DR.
DATE
EARTH GROUND CONNECTION
12
NO.
SUP’S’D’G.
NONE
BK
(
MFD
CAPACITORS =
RESISTORS = Ohms (
CHK.
POWER SUPPLY SOURCE POINT
SHT.
CLEVELAND, OHIO U.S.A.
NOTE: ALL UNMARKED RESISTORS = 100 OHMS
COMMON CONNECTION
FILE: M17637_1AC
H
Q
A
C
Q
Q
CLK
Q
Q
Q
B
Q
A1
A2
E
F
G
Q
R
D
74HC164
X3
6
4
2
12
13
1
10
11
8
5
3
9
LED3
2
1
4
9
5
10
7
6
8
3
C8
100V
3A
Q5
1
3
2
DATA
50V
.0047
C1
R2
X5
3
4
R25
J40
1
J40
3
R26
20.0
R36
J40
5
X5
98
J40
4
2.21K
R1
Q1
2N4401
J40
2
20.0
R32
20.0
R34
4.75K
R29
20.0
R31
20.0
R33
50V
330p
C6
20.0
R38
1W
15V
DZ1
D2
M
3.01K
R28
17637
3.01K
R27
200
R39
Q2
2N4401
X5
1
2
R30
50V
330p
C5
20.0
R35
20.0
R37
1W
10V
DZ2
100V
1A
Q4
X5
5
6
50V
0.1
C12
CLOCK
+5V
+15V
+5V
+15V
+15V
+15V IN
COMMON
Q3
2N4403
+5V
50V
0.1
C10
.33
50V
C9
R9
R16
LED1
2
1
4
9
5
10
7
6
8
3
4.7
35V
C11
GND
IN
OUT
X6
R4
R3
D1
R6
R8
R5
C3
10.0
R42
10.0
R40
HEXINV
X5
14
7
R24
R17
R20
74HC164
X3
14
7
54HC74
X4
7
14
R18
R19
R21
R23
C4
LED2
2
1
4
9
5
10
7
6
8
3
74HC164
X2
14
7
R22
R10
R11
R14
74HC164
X1
14
7
R12
R15
C2
R13
10.0
R41
+5V
R7
C7
FV
Ch’ge.Sht.No.
9-27-96F
XA
12-15-95A
G-19
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NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.