I've tried to install cod 071 for Toshiba (I know that is real cod because it's working with another remote control) according instructions [Link: support.radioshack.com]
but didn't succeed.
All another cods like 060, 154, 156 or even 4-digits don’t O.K.
Any suggestions?
Thank you

I don't know where you found that code or the instruction, but I'm pretty sure 15-2147 uses 4 digit codes. You should look at the manual for the remote to get the code and the programming instructions here. Codes are not universal between different universal remote makers.

The manual for your remote is here: [Link: remotecentral.com]

Thank you guys!
I already have resolved mine problem myself using next algorithm:
1. Press TV once.
2. Press and hold P until the red LED blinks twice,
Then release.
3. Enter 9 9 1. The LED blinks twice.
4. Aim the remote at the TV and press Power. The
remote sends IR codes from its library to the
selected device, starting with the most popular
code first.
5. If the TV responds, go to step 6. If the TV does
not respond, press CH+. The remote will try the
next code. Continue until the TV responds.
NOTE: Press CH- to try the previous code.
6. To lock in the code press P once. The LED
blinks twice.
Trick was: TV initially MUST BE OFF!!!
When you pressing CH+ repeatedly, it will turn on itself on the right code.
Do not forget press P for 5sec.

That was awesome! it worked like a carm. I tried visiting so many other sites for instructions and this saved me the money to buy another remote. Thanks again.