HP-71b Card reader "WRN: R/W Error"

[Nenad (Croatia)]

Thanks for your advice. Ok, I have corrected the program:

EDIT EQ2
10 INPUT "A"; A
20 INPUT "B="; B
30 C=A+B
40 PRINT "A+B="; C
50 END

and then tried:
COPY EQ2 TO CARD

The response is again "WRN: R/W Error"

Unfortunately, I do not know anyone here in Split, who has even a HP-71b, especially with the working reader or working cards.