Troubleshooting
Replacing the Power Supply Board
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Replacing the Power Supply Board
The Power Supply board must be replaced when:
•
Probe data is not being processed, or
•
The voltage between the GND and 8V test points [Figure 24] on the back of the CPU board is less than 7 Vdc.
1. Turn Off power to the system.
2. Disconnect the CPU cable from the Power Supply board.
3. Tag and disconnect probe, power, and overfill alarm relay wiring to the Power Supply board.
4. The Power Supply board is secured by two T-15 Torx screws in the top of the board. For consoles with the com
option (see Table 1 on page 1), the two screw locks which go through the bottom of the console into the DB-9
connector must also be removed before you can lift out the board.
After removing the Torx screws (and screw locks), slowly lift up on the board until the lower tabs on the board
clear the slots in the bottom of the console, then continue to lift the board out.
5. Replace the board by reversing the above steps.
6. Turn on power to the system. The system will perform a warm boot procedure [page 21] and the display will
return to the top level status screen. You do not have to reprogram the console after replacing the Power
Supply board.
OFF
