Tweco 51 with SL100SV CutMaster - Manual (Page 107)

Manual 0-4640 5-43 SERVICE
5
F. Input Diode Replacement
WARNINGS
Follow the electrostatic discharge instructions included with the component to prevent damage to the component.
Thermal pads and the large flat surface on the back of diodes must be kept clean. Thermal pads must not be allowed to
pick up any foreign material. A very clean installation between the module and mounting plate is essential for proper
operation.
1. Remove the power supply cover.
2. Label and disconnect wires from the Input Diode.
3. Remove screws securing Board in place. Remove board and its screws from the power supply.
4. Use isopropyl alcohol and a clean rag to clean the mounting plate. Remove all residue of the original thermal pad. Do not
scratch or abrade the surface.
5. Clean the large flat surface on the back of the replacement component with isopropyl alcohol.
6. The thermal pad, provided with the replacement part, is a thin metal pad. Remove and discard any loose protective paper
coverings from the pad.
CAUTION
Protective coverings must be removed from the thermal pad. Installing a thermal pad with protective coverings in
place will cause equipment damage or failure.
7. Apply the thermal pad to the diode. Use the screw hole and slot in the mounting plate as a guide to position the pad.