how do i reset the tamper light on veritas 8?

the cable leading to the door contact has been completley cut through. i have been under the floor a pushed excess cable up and reconnected exactly the same colour for colour. as soon as i moved the cable the alarm went off and wouldn't turn off so i took the front panel off, entered the code and it stopped. now the panel has the tamper light on and the affected zone light (zone 8) is still on. how do i reset the panel back to normal?