DMR-EH57 G code problems

vbimport

#1

This is a new recorder, ;I have tuned the recorder into the TV and I can change TV channels via the recorder remote everything seamed OK, Yet I can not use the G code, The G code works on one channel only.
The fact that I can change channels via the recorder remote tells me that it’s tuned in OK ,“I think”
Any suggestions

Graham