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23. Mounting the Power IC
IC4: TDA7293
Mount the support plate onto the IC as shown in the drawing.
Put a drop of silicone compound on both sides of the mica isolator.
Also check the position of the plastic isolator A.
ATTENTION : The bolt should be inserted on the side of the IC holder with the
countersunk opening B !
DO NOT TIGHTEN THE NUT YET
1. Position the IC onto the PCB.
2. Make sure that the support plate is touching the PCB surface.
3. Tighten the support nut.
4. Check again that the plate is touching the PCB surface.
5. Solder the IC connections.
B
A
A
Drop of heat conductive
compound
construction
11
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