Display Signal Circuit between Multi-display and Television Display Assembly

NAVIGATION SYSTEM: Display Signal Circuit between Multi-display and Television Display Assembly

Display Signal Circuit between Multi-display and Television Display Assembly

DESCRIPTION

This circuit sends a DVD image signal from the television display assembly to the multi-display.
This circuit is for a navigation system that has a radio receiver with a built-in CD changer.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - TELEVISION DISPLAY ASSEMBLY)





(a) Disconnect the multi-display connector M3 and television display assembly connector R14.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT TELEVISION DISPLAY ASSEMBLY (OUTPUT SIGNAL)





(a) Reconnect the television display assembly connector R14.
(b) Measure the waveform according to the table below.
OK:





HINT: The waveform pattern may differ from that shown in the illustration below due to differences in oscilloscope setting. A normal television display assembly operating condition can be determined if any waveform is output.





(c) Reference: Oscilloscope waveform
(1) Terminal: VV+ - Body ground
Setting: 200 mV/DIV., 10 micro s/DIV.
Condition: DVD display is ON.
NG -- REPLACE TELEVISION DISPLAY ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE