Samsung PN51E6500EFXZA - Manual (Page 292)

your remote to change the input
mode from lower case to numbers.
3. Select
1 , 0 , and 5 in numerical order
on your remote.
4. Select the
- key three times using
your remote to change the input
mode from numbers to upper case.
5. Select
2 three times using your
remote to input C.
6. Select the
- key three times using
your remote to change the input