ESAB EMP 215ic, Service Manual

Page: 56 / 102

ESAB EMS215IC/EMP215IC
6-10 TROUBLESHOOTING Manual 0463 413 001
7 D49/D50
a. With Meter in Diode Check setting check for diode reading between Heatsink Terminal D50 and PFC
Terminal on Power PCB2..
If open or shorted replace POWER PCB2.
See following illustration
8 Q19/Q21
a. With Meter in Diode Check setting, place negative meter lead on PFC terminal on POWER PCB 2
and positive lead on BR2(–) terminal for forward biased diode (0.30-00.7VDC).
If open or shorted replace POWER PCB2.
See following illustration
9 C35-38
Disconnect wire from POWER PCB2 from PFC terminal.
a) With meter in resistance setting, Place positive meter lead on Heatsink Terminal D50 and negative
meter lead on BR2 (-). Meter will show charging of capacitors
If shorted replace POWER PCB2
The following image shows the previous steps (7,8 and 9) listed. In the oval you will see the step number and
below that the meter reading you should see.
BR2(-)
9a
CAP Charging
-
D50 Cathode
+
PFC
8a
0.3 - 0.7 V
-
+
7a
0.3 - 0.7 V
+
-