Troubleshooting & repair, Test procedure, Static output rectifier bridge test (continued) – Lincoln Electric IDEALARC CV-300 User Manual
Page 54
F-15
TROUBLESHOOTING & REPAIR
F-15
IDEALARC CV-300
TEST PROCEDURE
1.
Disconnect main AC input power to
the machine.
2.
Locate and remove the following
plugs:
Note: Location of plugs will vary depend-
ing on code.
See Figure F.4.
FIGURE F.4 - Plug locations.
Location of plugs will vary depending
on code.
3.
Locate resistor R1 and remove lead
#224. See wiring diagram
4.
Disconnect the strap from the posi-
tive heat sink to the capacitor bank
using a 1/2" wrench. See Figure
F.5.
STATIC OUTPUT RECTIFIER BRIDGE TEST (CONTINUED)
CONTROL
BOARD
SNUBBER
BOARD
FIGURE F.5 - Procedure to disconnect
the strap from the positive heat sink
to the capacitor bank.
5.
Disconnect the D5 diode pigtail from
the negative capacitor buss using a
1/2" wrench. See Figure F.6.
FIGURE F.6 - Procedure to disconnect
the D5 diode pigtail from the negative
capacitor buss.
PLUG
J5
J1
J3
LOCATION
Snubber board
Control board
Control Board