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DISPLAY AND CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE
B
J3
REMOVAL PROCEDURE
Necessary tool:
-
Screwdriver type Phillips
-
5,5 mm short Nut driver or 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. Remove the flat knob cap and use a screwdriver type Phillips to loosen the knob until you'll be able to
remove it (see Fig.1)
5. Disconnect the connector J1, J3 and J4, plus the earth connector (A) (see Fig.2)
6. Remove the two (2) small bolts (B) using the 5,5mm Nut driver or wrench
7. Remove the control board applying a small force to be able to disconnect it from the three plastic locking
pins
8. Once the control board is removed, also the Display board can be removed applying a small force to be
able to disconnect it from the four metal locking pins.
DISASSEMBLY OPERATIONS
Fig.1
Remove the flat cap and use
a screwdriver type Phillips to
loosen the knob screw
J1
J4
63
Fig.2
B
A
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