Diagnosis instructions

Failure of the component: 

The following behavior can be expected in the event of a malfunction of the base plate:

• only with Combox mobile phone control unit
  • USB port: Short circuit to ground

    Fault entry in the Combox

  • AUX Out connection: Short circuit to UBatt and short circuit to earth (left and right channel)

    Fault entry in the Combox

Function check of the component: 

A function check of the base plate cannot be performed using the diagnosis system.

Observe the following for the function check of the CVBS line: VIDEO CONNECTION FOR SMARTPHONES .