Self-test will have three difference program:

1) Open circuit test (VCI box+ main cable + self-test adaptor + AC adaptor). It must have self-test adaptor to be attached. This program is to determine for main cable, vci box and adaptor issue.

--Test VCI box and main cable

2) Short circuit test  (VCI box+ main cable  + AC adaptor). It must be NOT Selt-test adaptor to be attached.The program is to determine for hardware or cable short circuit issue.

--Test VCI box and main cable

3) Self-test  (VCI box+ main cable + AC adaptor). It must be NOT selt-test adaptor to be attached. The program is to determine the main unit communication issue.

--Test VCI Box

Repair VCI Box