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F-32 TROUBLESHOOTING & REPAIRF-32
CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE (CONTINUED)
FIGURE F.14 CONTROL BOARD REMOVAL
MOUNTING
SCREWS
NUT WASHER
CONTROL
BOARD
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KNOB
PROCEDUREED CAP
1. Disconnect power to the INVERTEC® V155-S.
2. Perform the Case Cover Removal Procedure (left
side only).
3. Perform the Input Filter Capacitor Discharge
4. Performrocedurethe. Input Board Removal Procedure.
5. Perform the Inverter Board Removal Procedure.
6. Using a thin knife blade, remove the red plastic on the end of the output knob, See Figure F.14.
7. Using a 6mm nutdriver, remove the outpout knob mounting nut and washer located behind the red plastic cap previously removed. See Figure F.14.
8. Disconnect the JP1 connector.
9. Using a phillips screwdriver, remove the four mount- ing screws located on the corners of the solder side of the control board.
10. Disconnect the JP2 connector.
11. Remove and replace the control board.
Note: When installing the new control board, be sure to turn the output potentiometer shaft complete- ly counter clockwise prior to fastening knob into place. This will assure that the output setting is at itʼs lowest setting. This will allow proper install ation of the output knob with the red arrow point- ing to the lowest setting possible. If this is not done properly, the machine output will not match the set current.
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