CUSTOMER/OPERATOR SERVICE 64 Manual 0-2470
The work lead inductor has a core of steel laminations and
should never need replacing. If any burning or arcing is visible
on the work lead inductor, return the unit to an authorized
service center.
The only reason the main output choke should be replaced is if
the cores are cracked due to shipping damage or the unit being
dropped. Minor chips are normal. If any burning or arcing is
visible on the pilot inductor, return the unit to an authorized
service center.
To remove the main output choke :
1. Remove the hardware which connects the lead wire on one
terminal and the copper link on the other terminal.
2. Turn the unit on its side and remove the two mounting nuts
and lockwashers which secure the main output choke to the
bottom chassis. Remove the component from the unit.
3. Install the replacement main output choke by reattaching the
mounting and terminal hardware.
To replace the auxiliary transformer:
1. Disconnect the single pin connector on the white wire coming
from the auxiliary transformer.
2. Using a pin removal tool, remove the pins from connectors
J14-A, J14-B, and J14-C on the voltage selection panel.
3. Disconnect the secondary wires by unplugging the J15
connector from the auxiliary transformer.
4. Removing the four mounting screws and washers and re-
move the auxiliary transformer from the unit.
5. Install the replacement transformer on the bottom chassis
panel. Reattach the J15 connector. Connect the brown wire to
the top connector on the voltage selection panel, connect the
orange wire to the middle connector, and connect the black
wire to the lower connector. Connect the white wire to the
free hanging single pin connector.
Work Lead Inductor (L7)
Main Output Inductor
(L6)
Auxiliary Transformer
(T1)
5.08 SERVICE PROCEDURES (continued)
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