Test F

PINPOINT TEST F: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY - THE DISPLAY SCREEN IS INOPERATIVE

Test F1-F2:

Test F3-F4:

Test F4-F6:

Normal Operation
The audio unit display is controlled by the navigation system module. Video color is provided through circuits 10-GK24 (GY/RD), 10-GK25 (GY/OG), and 10-GK26 (GY/VT). Circuit 8-GK35 (WH) provides the color synchronization and circuit 9-GK35 (BN) is the video signal return.

Possible Causes
- circuit 10-GK24 (GY/RD) open or shorted
- circuit 10-GK25 (GY/OG) open or shorted
- circuit 10-GK26 (GY/VT) open or shorted
- circuit 8-GK35 (WH) open or shorted
- circuit 9-GK35 (BN) open or shorted
- navigation system module
- audio unit