Chapter 6 Troubleshooting 53
NetSure 731 CC2, NetSure 731 C62 Series Power Supply System User Manual
5. Connect the signal cables in reverse sequence, that is, reconnect signal cables other than J8, J10 terminal cables
and DI/DO cables.
6. Check the cable connections. If the connections are correct, reconnect J8 termi nal. If the watchdog indicator
flashes and power indicator is on, the PCB works normally.
7. Check the voltages of J10 terminal with a multimeter. Make sure that it outputs low voltage. Connect J10 terminal.
8. Set the parameters of the controller according to Chapter
4.7 Setting Parameters
.
Replacing the LCD
The procedures for replacing the LCD are described as follows:
1. Unplug J8 and J10 terminals of the PCB.
2. Unplug the terminal tape cable connected the LCD and screen.
3. Replace the LCD. Restore the J3 terminal tape cable connected the LCD and screen. Pay attention not to short the
LCD with the power system or the PCB.
4. Check the voltages of J10 terminal with a multimeter. Make sure that it outputs low voltage.
5. Insert the J10 terminal, and the LCD is replaced.
6. Insert the J8 terminal to power on the PCB of the controller.