Use the 994 Command Keymover (one device mode) to assign the following EFCs.  In the list below, I've also shown the functions which are built in to the remote on TV 1886.  Where the function name and button label aren't an obvious match, the button label is also shown.  So Rew and Fast forward should work now without modification.

These are the only functions I know.  You can search for others by systematically testing all EFCs between 00000 and 00255.  Of course, the unit needs to be in a state for which a command makes sense.  For example, sending Menu Return when the unit isn't showing a Menu may not get any response even though it is a valid command.  Go slowly while testing.  There is a low but non-zero chance that a IR command will open a service menu.  If that happens, you'll want to depower the unit before sending any other IR commands.

Test by tapping (don't hold) Setup, and then entering the 5 digit EFC. When the last digit is entered, the IR command is sent.  Hold the last digit to keep repeating the signal.

0	00181	built in
1	00185	built in
2	00183	built in
3	00187	built in
4	00180	built in
5	00184	built in
6	00182	built in
7	00186	built in
8	00053	built in
9	00057	built in
vol up	00197	built in
vol down	00201	built in
mute	00196	built in
channel up	00101	built in
channel down	00105	built in
power	00213	built in
dash	00247
audio	00200
menu return	00005	Exit
menu	00210	built in
up arrow	00139	built in
down arrow	00132	built in
left arrow	00134	built in
right arrow	00136	built in
enter	00138	OK
sleep	00215
screen mode	00125	Aspect
display	00003	Info
eject	00081
setup	00133
play	00078	built in
pause	00083	built in
previous chapter	00080
next chapter	00082
rewind	00207	<<
fast forward	00211	>>
stop	00206	built in
exit	00077
input toggle	00165	built in
+100	00247
channel return	00106	Last
picture	00189
top menu	00079
pic mode	00193
sound mode	00191
mode	00076
zoom	00209