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HIGH FREQUENCY BOARD REMOVAL AND REPLACEMENT PROCEDURE
REMOVAL PROCEDURE
Necessary tool:
-
5,5 mm wrench
1. Remove main input power to the CITOTIG 315DC or 415DC
2. Follow the case removal procedure available in this Service Manual
3. Perform the Discharge procedure
4. Locate the HF board (see Fig.1)
5. Disconnect the two HF transformer terminals as indicated in Fig.2 (take note about the black tie cable
position, it must be connected in the same place)
6. Disconnect the connector J71 (see Fig.3)
7. Using the 5,5 mm wrench remove the four (4) nuts (A) that fix the HF board to the machine frame (see
Fig.2 and Fig.3)
8. Remove the HF board from the machine.
9. For the HF board re-assembly operations, make the previous steps in the reverse order. Pay
attention to position of the two HF transformer terminals. The transformer cable with plastic tie must be
connected to "HV" terminal on the HF board.
DISASSEMBLY OPERATIONS
HF
board
Fig.1
HF
transformer
terminals
J71
62
A
Fig.2
A
Fig.3
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