SOURCE: error code 453 invalid number when turning phone on
take the phone to a mobile service center and have them reflash the keypad flash file back into the phone.
Hi
Error code sc 547 means "Zero cross signal malfunction". This error appears due to a faulty power supply. This error code may also appear if the input board is defective or the BIC Unit is defective. Turn off the printer and unplug the printer for 30-40 minutes and check if the error still appears. If you see he error still appearing then try and rest it using the following reset method--
To reset the SC code by entering SP5810 and select 1.
Now hold down the photo mode key and the # key at the same time for at least 3 second.
Then turn the machine off and on again.
If the same issue still appears, you'll need to check and replace the Power supply or the Input (IOCC) boardt.
Hope it helps...
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