Test J: The Audio Input Jack Is Inoperative/Does Not Operate Correctly - Audio Units With External Audio Input Jack

PINPOINT TEST J: THE AUDIO INPUT JACK IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - AUDIO UNITS WITH EXTERNAL AUDIO INPUT JACK

J1:

J2-J3:

Normal Operation
Audio signals are sent from the audio input jack to the audio unit. There are no external power or ground circuits to the audio input jack.

Possible Causes
- Circuit RME45 (YE/GN) open, short to ground or voltage
- Circuit RME46 (WH/GN) open, short to ground or voltage
- Circuit VME45 (BU) open, short to ground or voltage
- Circuit VME46 (BU/GN) open, short to ground or voltage
- Audio input jack
- Audio unit