Possible Causes | Steps of Solution |
1. FRC is Faulty | 1. Check if FRC cable of that module is loosen / disconnected. If No, then
change that FRC cable. |
2. 5V Connector is Faulty | 1. If FRC cable is changed, still the issue is unresolved then check if 5V
power is received at module by Digital Multimeter. If 5V is not received,
change the 5V connector. |
3. Module is Faulty | 1. If power is received, FRC is replaced & still issue is unresolved,
bypass that module & connect FRC to the next module. If it works, change
the module which was blank initially. |