Lincoln Electric VANTAGE 400 - Manual (Page 108)

TROUBLESHOOTING & REPAIR F-60 F-60
VANTAGE® 400
(+) Lead (-) Lead
Diode Bias
and Expected
Test Result
AC1 DC(+) FORWARD BIAS
(Low Resistance)
AC2 DC(+) FORWARD BIAS
(Low Resistance)
AC3 DC(+) FORWARD BIAS
(Low Resistance)
DC(-) AC1 FORWARD BIAS
(Low Resistance)
DC(-) AC2 FORWARD BIAS
(Low Resistance)
DC(-) AC3 FORWARD BIAS
(Low Resistance)
AC1 DC(-) REVERSE BIAS
(High Resistance)
AC2 DC(-) REVERSE BIAS
(High Resistance)
AC3 DC(-) REVERSE BIAS
(High Resistance)
DC(+) AC1 REVERSE BIAS
(High Resistance)
DC(+) AC2 REVERSE BIAS
(High Resistance)
DC(+) AC3 REVERSE BIAS
(High Resistance)
11. Reconnect all leads.
12. Perform the Case Cover replacement Procedure.
TABLE F.1 – DIODE TEST TABLE
Test Instrument
Rectifier
T
erminal
Connections
R
etur
n
to
Section
T
OC
R
etur
n
to
Section
T
OC
R
etur
n
to
Section
T
OC
R
etur
n
to
Section
T
OC
R
etur
n
to
Mast
er
T
OC
R
etur
n
to
Mast
er
T
OC
R
etur
n
to
Mast
er
T
OC
R
etur
n
to
Mast
er
T
OC