S0740 800 152/E061012/P36
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ci01d1
READ THIS FIRST
Maintenance and repair work should be performed by an experienced person, and
electrical work only by a trained electrician. Use only recommended replacement parts.
This service manual is intended for use by technicians with electrical/electronic training for
help in connection with fault--tracing and repair.
This manual contains details of design changes that have been made up to and including
September 2006.
WARNING !
STATIC ELECTRICITY can damage circuit
boards and electronic components.
S Observe precautions for handling electrostatic--
sensitive devices.
S Use proper static--proof bags and boxes.
ESD
INTRODUCTION
The MMC module consists of a control panel and a welding data board.
The power source, the wire feed unit and control panel each have their own microprocessor
for control. The control panel is the central unit in the system: in addition to setting and
controlling welding data, it also has overall control of the entire system.
The M2 panel, with knobs for all settings. See page 15 for a description
of operation. The function description below refers to various fault codes.
However, the M2 panel indicates faults by means of an LED, which can
either flash or light steadily to indicate a fault. The fault indication function
is described in the section on FAULT CODES: see Page 8.
The MA4 panel, with knobs for setting welding voltage and wire feed
speed / current. Other settings are controlled by pushbuttons and
symbols in the display panel. See page 16 for a description of operation.
The MA6 and U6 panels, with knobs for setting welding voltage and wire
feed speed / current. Other settings are controlled by pushbuttons and
text in the display panel. See page 22 for a description of operation.
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