161 MF— 161 MTM
Ultima modifica/Last Update: 18/03/2008 Rev0 pagina 13 di 17
PROBLEM
CASE
SOLUTION
The torch button
does-
n’t work.
There’s no continuity in the amphenol
board (0042) cable.
There is no continuity between the euro
connector and the connector on front
panel.
The Front Panel is damaged.
!
The amphenol cable must be replace.
!
Check the connection between the Euro-
connector and pin 1/2 of the Amphenol
connector. Afterwards check the connec-
tion between the Amphenol connector and
the Motor board and between Motor Board
and Front Panel.
!
The Front Panel must be replace
The machine always
welds at maximum cur-
rent.
The front panel is damaged..
The Power Board is damaged.
The shunt wires are damaged or not cor-
rectly inserted.
Switch off the machine and disconnect the
plug:
!
The Front Panel must be replaced.
!
The Power Board must be replaced.
!
Connect the cables, or if damaged, replace
them.
The wire feeding unit
motor does not work.
Primary fuse of the auxiliary transformer
is damaged.
Controls from the front panel do not
reach the motor board.
The motor board is damaged.
!
Switch off the machine and disconnect the
plug. The delayed fuse 5x20 800 mA on
the back of the machine must be replaced.
!
Check the connection of the motor feeding
wire on the front panel and after that check
the continuity between the front panel and
the amphenol connector (picture 9). Check
connections between the front panel and
the white 4-pin connector; if connections
are not interrupted, replace the front panel.
!
The Motor board must be replaced.
