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G-6
ELECTRICAL DIAGRAMS
R3R
Pocket Amptrol Schematic
33.2K
R38
X1
14
12
13
Q3
475
R10
68.1K
R44
33.2K
R39
D9
33.2K
R56
1W
12V
DZ1
D3
100
50V
C4
68.1K
R51
15J
50V
TP1
33.2K
R62
1W
12V
DZ2
10.0
R29
D4
10.0
R30
100
50V
C5
475
R9
D6
J7
1
133K
R13
18
15V
C9
1A
100V
Q4
4.75K
R19
600V
.02
C11
J6
1
G
Y
L
G
D5
J6
2
50V
.68
C10
J7
2
J7
3
3.01K
R11
D1
3.01K
R12
D2
50V
.68
C8
133K
R35
7.68K
R15
4.75K
R20
47.5K
R16
22.1K
R17
4.75K
R18
100
15V
C7
-12V
33.2K
R41
+12V
33.2K
R40
100
15V
C6
+12V
MC1404
X5
8
16
6.81K
R14
68.1K
R45
HEXTRGR
X4
14
7
4011
X3
14
7
X2
14
12 13
68.1K
R46
C19
+12V
1W
15V
DZ4
-12V
J6
4
C20
X3
11
12
13
NO.
200V
.01
C17
EQUIP.
4.75K
R22
X1
1
3
2
CLEVELAND, OHIO U.S.A.
6
4
1
3
J7
4
1
2
3
4.7
35V
C13
VOLTAGE NET
SUPPLY
X4
11 10
COMMON CONNECTION
200V
.01
C16
_
X4
1 2
_
1000V
100p
C12
_
HEAT SINK
TO DIODE-
3.92K
R28
500mW
10V
DZ5
4.75K
R21
100K
R26
(UNLESS OTHERWISE SPECIFIED)
LABELS
UNLESS OTHERWISE SPECIFIED)
UNLESS OTHERWISE SPECIFIED)
C-
POWER SUPPLY SOURCE POINT
EARTH GROUND CONNECTION
+12V
D-
R-
LAST NO. USED
L6661
218
219
ASSEMBLY
X1
7
5
6
267K
R23
D8
X4
5 6
MFD
CAPACITORS =
RESISTORS = Ohms (
1A, 400V
ELECTRICAL SYMBOLS PER E1537
DIODES =
GENERAL INFORMATION
(
1/4W
.022/50V
SCALE
DATE
NONE
SCHEMATIC
TYPE
THE LINCOLN ELECTRIC CO.
SUBJECT
SHT.
SUPÕSÕDÕG.
J6
X4
13 12
10K
R1
X3
10
8
9
X3
4
65
X4
3 4
1000V
750p
C14
X2
1
3
2
10K
R27
200V
.0033
C15
X3
3
21
100K
R25
X4
9
8
+12V
DR.
ON 2 PLACE DECIMALS IS + .O2
MATERIAL TOLERANCE ("t") TO AGREE
ON ALL ANGLES IS + .5 OF A DEGREE
ON 3 PLACE DECIMALS IS + .OO2
ON HOLES SIZES PER E-2056
10
25V
C18
C21
ChÕge.Sht.No.
UNLESS OTHERWISE SPECIFIED TOLERANCE
WITH PUBLISHED STANDARDS
+12V
FRAME CONNECTION
CANADA
FRANCE
AUSTRALIA
CHK.
L
R3R POCKET AMPTROL
B
10K
CW
R7
47.5K
R33
Q2
A
1/2W
82
R5
C
7577
NUMBER.
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
NOTES :
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
76
33.2K
R43
33.2K
R42
1/2W
82
R24
68.1K
R48
68.1K
R47
100K
CW
R3
68.1K
R52
D
68.1K
R49
33.2K
R59
J6
5
Q1
6.81K
R31
1/2W
82
R4
1W
15V
DZ3
J6
3
16
8
VDD
/C
Q7
Q12
MC1404
Q4
VSS
R
Q3
Q11
Q8
Q10
Q9
Q6
Q2
Q5
Q1
X5
1
15
10
14
12
13
11
4
2
3
5
6
9
7
6.81K
R32
4.75K
R34
LM224
X1
4
11
C3
33.2K
R61
C2C1
C22
LM224
X2
4
11
3.32K
R36
10K
R37
33.2K
R57
68.1K
R53
6.81K
R2
33.2K
R58
68.1K
R50
33.2K
R60
X1
10
8
9
10K CW
R6
6.81K
R8
X2
10
8
9
68.1K
R54
68.1K
R55
6661
C.S.
2-27-91
9-1-81
3-8-91J
1-15-82
3-12-82M
5-21-82R
2-82 2-82 4-82
G-6
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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.