Thermal Dynamics CUTMASTER 81, Руководство по обслуживанию

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Manual 0-2957 5-11 REPLACEMENT PROCEDURES
G. Main Transformer Removal and
Replacement
1. Disengage the Heatsink Shroud per Paragraph H.
2. Disconnect wires #27 and 32, connected to termi-
nals E27 and E32 on the Main Power PC Board.
Pull these wires through the hole in the center
chassis.
3. Remove the transformer.
a. Lift the Main Transformer slightly. Swing its
left edge away from the center chassis. Pull
its right edge away from the center chassis.
b. Lift it out of the Power Supply through the
opening at the rear of the Power Supply.
4. Position the replacement Main Transformer be-
hind the Heatsink Shroud Assembly. Position its
wires at the right edge (as you face it) of the trans-
former.
5. Install the replacement transformer as follows:
a. Pass the tabs on the right edge of the base of
the transformer into slots in the center chassis
of the Power Supply.
b. Swing the transformer against the chassis, and
pass the tabs on the left edge of the base into
slots in the chassis. Press the transformer
downward to lock it into position.
c. Check for proper installation; the transformer
should remain securely in place.
6. Pass wires #27 and 32 through the hole in the cen-
ter of the main chassis. Connect wire #27 to ter-
minal E27 and wire #32 to terminal E32 on the
Main Power PC Board.
7. Replace the Heatsink Shroud Assembly per sub-
section I.
H. Output Inductor Assembly Removal and
Replacement
1. Disengage the Heatsink Shroud per paragraph H.
2. Disconnect the wires to the thermal switch on the
Output Inductor.
3. Remove hex nuts at the left forward and right rear
corners of the Inductor base.
4. Remove the Inductor as follows:
a. Note the position of the wires leading from
the Inductor.
b. Lift out the Inductor through the opening at the
rear of the Power Supply. It may be necessary
to lift the Main Transformer slightly to create
room for the Inductor to pass through the rear
opening.
5. Install the replacement Inductor.
a. Put the replacement Inductor in place, with the
wires oriented the same way as the original
Inductor.
b. Secure the Inductor in place with hex nuts at
opposite corners of the Inductor base.
6. Reconnect the wires to the thermal switch on the
Output Inductor.
7. Replace the Heatsink Shroud per paragraph I.
I. Heatsink Shroud Assembly Replacement
1. Pass transformer wires #45 and 49 through the
upper hole in the right (rear) edge of the Heat-
sink Shroud. Pass transformer wires #47 and 52
through the lower hole.
2. Route wires as follows:
a. Pass the red wires from the output inductor
through the upper hole in the right (rear) edge
of the Heatsink Shroud.
b. Pass the black wires from the output inductor
through the lower hole in the right (rear) edge
of the Heatsink Shroud. Refer to Appendix
11, Power Output Board Layout.
c. Pass the wires from the temperature switch
on the Output Inductor through the upper hole
in the Shroud.
3. Re-install the Heatsink Shroud as follows:
a. Lift the Heatsink Shroud (Assembly) into po-
sition. Studs on the Power Supply base pass
through holes in the bottom flange of the
Shroud.
b. Swing the top edge of the Shroud Assembly
into place. Studs on the Center Chassis of the
Power Supply pass through holes in the top
flanges of the Shroud.
c. Ensure that the rubber feet on the Main Trans-
former engage holes in the Shroud.