Phasetronics
Page 31
8.2 - Replacing Printed Circuit Boards
The printed circuit boards are not intended to be field repaired. If a board is found to be faulty, the entire
board should be replaced.
Important!
Use ESD Precautions any time you replace circuit boards.
1. Remove all power and lock out
2. Option Card replacement.
2.1. Disconnect the Red plug on J1.
2.2. Note and mark the locations of all potentiometers.
2.3. Label all wires to each Terminal block being used.
2.4. Disconnect all wires connected to the option card.
2.5. Using a Phillips screwdriver, remove the four mounting screws.
2.6. Remove the defective option card.
2.7. Install the new option card
2.8. Install the 4 mounting screws and tighten to 16in lbs.
2.9. Reconnect the tagged wire to their respective terminal block locations.
2.10. Preset all potentiometers the same as the previous option card.
2.11. Reconnect the Red plug on J1.
2.12. Go thru Start up procedures in section 6.
3. Trigger Card Replacement for 25-75A units.
3.1. Remove all power and lockout.
3.2. Label all wires connected to each board in the unit before removing any PCBs.
3.3. Remove option card using steps 2.1 thru 2.6.
3.4. Disconnect the four position red plug connected to the PTR6000-I board at J1.
3.5. Loosen the six terminal block screws at TB3 on the PTR6000-I and carefully pull out the wires.
3.6. Remove the two standoffs and two Phillips screws that mount the PTR6000-I board.
3.7. Remove the PTR6000-I board.
3.8. Loosen all terminal block screws on the PTR3000 board and carefully pull out the wires.
3.9. Remove the standoffs and Phillips screws that mount the PTR3000 board.
3.10. Remove the PTR3000 board from the heat sink assembly.
3.11. Install the new PTR3000 onto the heat sink and fast with the standoffs and screws.
3.12. Reinstall the wires and the J1 connector to the PTR3000 that were disconnected earlier.
3.13. Install the PTR6000-I card onto the standoffs that mount the PTR3000.
3.14. Reconnect the wires and J1 connector to the PTR6000-I that were removed earlier.
3.15. Reinstall the option card using steps 2.7 thru 2.11.
3.16. Verify all connections are correct and secure.
3.17. Go thru Start Up procedures in section 6 as necessary.
4. Trigger Card replacement for 110 thru 600A units.
4.1. Remove all power and lockout.
4.2. Label all wires connected to each board in the unit before removing any PCBs..
4.3. Remove option card if needed using steps 2.1 thru 2.6.
4.4. Disconnect the four position red plug connected to the PTR6000-I board at J1.
4.5. Loosen the six terminal block screws at TB3 on the PTR6000-I and carefully pull out the wires.
4.6. Remove the Phillips screws that mount the PTR6000-I board.
