Access control machine- Brushes card can not open the door

Access control machine- - - > Brushes card can not open the door

Settles means ——
1, Checks as Shua clip put read head whether can normal Shua clip outside time, Ases Shua clip time look Timecard recording machine whether show card No., Can show then express read head have not problem, Can not show then want check read head with Access control machine whether connection right, If connection right will be read head have problem;
2, Checks electricity lock whether have normal power supply;
3, Checks as Shua clip time Timecard recording machine 's relay export whether have signal output, Will have no normal export then for relay have problem.