Tweco 51 with SL100SV CutMaster - Manual (Page 109)

Manual 0-4640 5-45 SERVICE
5
G. Main PC Board Replacement
Follow the antistatic procedures provided with the replacement part.
1. Remove the power supply cover.
2. Remove the Logic PC Board.
3. Remove the POT/LED PC Board.
4. Disconnect all wire and cable connections to the Main PC Board, including the connections from the three smaller PC
Boards. Refer to the Main PC Board Wiring Diagrams in the Appendix pages if necessary.
5. Remove the two long Transformer screws securing the Auxiliary Transformer to the Center Chassis.
6. Remove the other screws securing the PC Board to the Center Chassis.
7 . Carefully remove the original PC Board.
8. Install the replacement PC Board by reversing steps above. It may be easier to install the PC Board if the Power Supply
is turned on its right side first. Torque the screws to 17 inch-pounds (1.9 Nm).
Art # A-03909
Auxiliary Transformer
IGBT
Output
Diode
Attachment
Screws
1 3
9
5
4
2
6 7
8
10 11
12
9. Reconnect all wiring. Refer to the Appendix pages in this manual for wiring details.
H. EMI Filter Replacement (CE Units Only)
1. Remove the power supply cover.
2. Label the input power cable connections and the cable connections to the main input contactor.
3. Disconnect all wire and cable connections to the EMI Filter.
4. Remove the hardware securing the EMI Filter. This hardware passes upward through the base of the power supply.
5. Put the replacement EMI Filter in position and secure it with the hardware removed in Step 4.
6. Connect the input power cables and the cable connections to the main input contactor.
7. Test the Power Supply for proper operation.