OWNERS
MANUAL
IGBT/MOSFET
Tester
156
114
~F~bruary
1993
FORM:
OM-156
165A
Use
above
FORM
number
when
ordering
extra
manuals.
4~
WARNING
ELECTRIC
SHOCK
can
kill;
SIGNIFICANT
DC
VOLTAGE
exists
after
removal
of
input
power.
Do
not
touch
live
electrical
parts.
Turn
OFF
welding
power
source,
disconnect
input
power,
wait
60
seconds,
measure
voltage
on
input
capacitors
according
to
Service
Manual,
and
wait
for
voltage
to
drop
to
zero
before
touching
any
parts.
Have
only
qualified
persons
familiar
with
and
following
standard
safety
practices
perform
troubleshootina
łrocedures.
STATIC
ELECTRICITY
can
damage
parts
and
parts
on
circuit
boards.
Put
on
grounded
wrist
strap
BEFORE
handling
boards
or
parts.
Use
proper
static-proof
bags.
Before
use,
install
9V
battery.
To
check
battery,
connect
RED
and
BLACK
leads
together;
test
light
(LED)
=
ON;
battery
OK.
MOSFET
Testing
Procedure
#1
2\
\1
5
flrro)
~
~
1OJ~
Actual
Part
3
1
MOSFET
Power
Transistor
Remove
transistor
from
circuit
board.
Circuit
Diagram
Symbol
G
2
Gate
(G)
3
Drain
(D)
4
Alternate
Source
(AS)
Not
Tested
5
Source
(5)
6
IGBT/MOSFET
Tester
7
Test
Button
8
Test
Light
(LED)
Hook
up
tester.
ON
=
Shorted;
replace
part
Press
button.
OFF
=
Fails
test;
replace
part
ON
=
Passes
test
MOSFET
Testing
Procedure
#2
a
Static
Hazard.
Put
on
grounded
wrist
strap.
Dl
2
3h~:
S-071
7
/
S-0663
Si
Actual
Part
Circuit
Diagram
Symbol
S2
1
MOSFET
Power
Transistor
Check
plastic
case
for
cracks
in
side
of
case
or
a
separation
of
case
from
its
base
plate.
Replace
any
damaged
part.
Mark
and
disconnect
all
leads
from
power
transistor.
2
Source
2
(S2)
3
Gate
2
(G2)
4
Drain
2,
Source
1
(D2,
Si)
5
Source
2
(52)
6
Drain
1(01)
7
Source
I
(Si)
8
Gate
1
(Gi)
9
IGBT/MOSFET
Tester
10
Test
Button
11
Test
Light
(LED)
Hook
up
tester.
ON
=
Shorted;
replace
part
Press
button.
OFF
=
Fails
test;
replace
part
ON
=
Passes
test
S-0717
/
5~O666
9
10
ii
1o~
a
Static
Hazard.
Put
on
grounded
wrist
strap.
Dl
PB1
Ri
R2
R3
R4
iT
083
850
113333
078431
072561
081
833
092
648
038
785
157475
157476
156 170
138044
604
825
154095
154096..
1
1
1
1
1
1
1
2ff
1
1
IGBT
lure
4
Actual
Part
Gl
(Bl)
~
El
El
G2
(B2)
Circuit
Diagram
Symbol
E2
I
IGBT
Power
Transistor
Check
plastic
case
for
cracks
in
side
of
case
or
a
separation
of
case
from
its
base
plate.
Replace
any
damaged
part.
Mark
and
disconnect
all
leads
from
power
transistor.
2
Emitter
2
(E2)
3
Gate
2
(G2)
or
Base
2
(B2)
4
Collector
2,
Emitter
I
(C2,
El)
5
Emitter
2
(E2)
6
Collector
I
(Cl)
7
Emitter(El)
8
Gate
1
(Gi)
or
Base
1
(Bi)
9
IGBTIMOSFET
Tester
10
Test
Button
11
Test
Light
(LED)
Hook
up
tester.
ON
=
Shorted;
replace
part
Press
button.
OFF
=
Fails
test;
replace
part
ON
=
Passes
test
9
10
11
E/S
DLII
a
Static
Hazard.
Put
on
grounded
wrist
strap.
DI
8/2
TEL
S-0717
/
S-0664
0-
81.8
TEl.
Wiring
Diagram
8W
23
IT
0 0
0
2
/
81/
84
SA-156
15-A
Circuit
Diagram
SA.156
116
Dia.
Part
Mkgs.
No.
Description
Quantity
Complete
Assembly
LIGHT,
md
red
lens
2V
LED
1
SWITCH,
PB
MC
NO
SPST
1A
115VAC
1
RESISTOR,
C
.25W
330
ohm
I
RESISTOR,
MF
.25W
267K
ohm
1
RESISTOR,
CF
.25W
2.7
meg
ohm
RESISTOR,
WW
fxd
zero
ohm
STRIP,
terminal
3P
solder
CASE
SECTION,
top/sides
CASE
SECTION,
bottom/ends
HOLDER,
battery
9V
BUSHING,
strain
relief
.120/.150
ID
x
.500mtg
hole
CABLE,
port
No.
18
3/c
(order
by
if)
TEST
CLIP,
minigrabber
red
TEST
CLIP,
minigrabber
black
TEST
CLIP,
minigrabber
yellow
1
154097..
OM.156
165
Page
2
-
1
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2
Miller IGBT/MOSFET TESTER 156114 (INACTIVE) Owner's manual
- Type
- Owner's manual
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