Samsung HT-C550 Service Manual page 80

6. After step (5), you can see "15 USA" on the VFD.
It means that currently System Micom program is installed by USA
specification.
7. Turn the Power off.
[Tip]
In case of System Micom and EEPROM problem, you can apply to this.
For example, during Updating program of System Micom, if Updating fail is happened, it is impossible to turn on
the system from stand-by status.
The system will keep the stand-by status continuously, and the touch-key function will never work.
In this case, you have to change System Micom, and set up the Buyer Region code again.
In case of EEPROM, you don't need to care about it.
After set-up the Region code, System Micom will store the information of the region code to EEPROM
automatically.
Samsung Electronics
Troubleshooting
15 USA
4-23