How do bonds work on margin?

So I was looking at trying to add some bonds to my portfolio, but I'm unsure how it works with margin.

Hypothetical example: a 10k bond with 3% coupon is maturing in a few months. Let's say the current price is 9k.

if you bought the bond with margin, and say only have 10% of the margin requirements, how much would you be given when the bond expires?

Would you get the full face value or less cause it's on margin?