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A
WARNING:
ELECTRIC
SHOCK
can kill;
MOVING
PARTS
can
cause serious
Inlury.
•
Do
not
touch
live
electrical
parts.
•
Shutdown
wire
feeder
and
welding
power
source
or stop
engine
before
making
or
changing
meter
lead
connec
-
tions
and
before
disconnecting
or
connecting
any
leads.
•
Have
only
qualified
persons
familiar
with
and
following
standardsafetypractices
perform
troubleshooting
proce
-
dures.
•
Follow
standard
ESD
precautions
to
prevent damaging
static-sensitive
parts
during
testing.
Spot time
potentiometer
R25
+35
volts
dc
Circuit
input
common
UIN GND
TRIGGER
/
Not
used
+19
volts
dc
Input
with
gun
trIgger
pressed
TM-1571
Page
22
Diagram 8-3.
Troubleshooting Circuit
Diagram
For
Optional
SpotlBurnback
Board
PC2
S-21
E