Troubleshoot the hypertherm igbt tester, Schematic for building an igbt tester, Powermax1250 – Hypertherm Powermax1250 Service Manual User Manual
Page 44
MAINTENANCE
powermax1250
Service Manual
3-11
Legend
1. Collector 1 (C1)
2. Emitter 2 (E2)
3. Collector 2, Emitter 1 (C2,E1)
4. Gate 1 (G1)
5. Emitter 1 (E1)
6. Emitter 2 (E2)
7. Gate 2 (G2)
Troubleshoot the Hypertherm IGBT tester
1. Inspect the leads and the IGBT tester for damage.
2. Verify that the battery voltage is greater than 8V.
3. Test the IGBT Tester, itself, as shown below. If the results do not match the table, replace the lead connections.
Connect leads
Short test
Open test
None
Pass
Fail
Red to Black
Fail
Pass
9 VDC
battery
R4
2.0K
009036
Normally open
(N.O.) pushbutton
switch
Yellow
Minigrabber
test clip 4
R1
3.01M
009464
Black
Minigrabber
test clip
Q1
150A
1400V
109125
R3
2.0K
009036
Red LED lamp
109092
Red Minigrabber
test clip
D1
1
2
3
5
6
7
Schematic for building an IGBT tester
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