Troubleshooting & repair – Lincoln Electric IDEALARC DC-655 User Manual

Page 94

background image

n to Section TOC

n to Section TOC

n to Section TOC

n to Section TOC

n to Master TOC

n to Master TOC

n to Master TOC

n to Master TOC

TROUBLESHOOTING & REPAIR

F-52

F-52

IDEALARC DC-655

PROCEDURE

1. Remove the input power to the DC-655

machine.

2.

Using the 3/8” wrench, remove the case top
and sides.

3.

Locate and remove plugs J9 and J20 from
the Thermal Fan/Snubber Board. See Figure
F.19.

4.

Disconnect lead #222 from the negative high
inductance output terminal. This lead runs
from plug J9 to the negative high inductance
output terminal. Cut any necessary cable
ties. See the Wiring Diagram.

SCR RECTIFIER BRIDGE REMOVAL AND
REPLACEMENT PROCEDURE (continued)

THERMAL FAN / SNUBBER

LED5

LED1

LED2

LED3

LED4

LED6

PLUG J9

L10124-[ ]

PLUG J20

FIGURE F.19 - THERMAL FAN/SNUBBER BOARD PLUG LOCATIONS