Lincoln Electric IDEALARC DC-1500 Service Manual page 49

F-15
AUXILIARY TRANSFORMER (T1) VOLTAGE TEST PROCEDURE (continued)
L E F T S I D E T 2
T E R M I N A L S T R I P T 5 1 T 4 T 3 T 7 F R O N T O F W E L D E R
T7
TERMINAL
STRIP T51
T3
T4
5. Locate Auxiliary Transformer leads 201 and 202
(32) at the terminal.
6. Apply power and test for 115 VAC between leads
201 to 202 (32).
7. If 115 VAC is not present between leads 201 and
202 (32), test for correct main AC input power to
the Auxiliary Transformer primary windings (H1,
H3, etc.) at the reconnect area.
Diagram.
If the correct main AC input power to the Auxiliary
Transformer is present, and the secondary voltage
is not correct, the Auxiliary Transformer may be
faulty. Replace.
TROUBLESHOOTING AND REPAIR
FIGURE F.2 – Auxiliary Transformer 201,202 (32)
LEFT SIDE
T2
See Wiring
IDEALARC® DC-1500
Note: Newer codes will have a 5 Amp slow blow fuse
on the reconnect area for the primary connection
to T1 (fuse may be blown).
8. With the input power disconnected check for meg
ohms of resistance to case ground of welder from
H1, H3, Primary leads to case, from 201, 202 (32)
leads to case. If less than 1 meg ohm, replace T1
Transformer.
F-15
FRONT OF WELDER