Sound Signal Circuit Between Video Terminal and Television Display

AUDIO / VISUAL: REAR SEAT ENTERTAINMENT SYSTEM: Sound Signal Circuit between Video Terminal and Television Display

Sound Signal Circuit between Video Terminal and Television Display

DESCRIPTION

This is the sound signal circuit from the video terminal to the television display.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - VIDEO TERMINAL)





(a) Disconnect the W2 display connector.
(b) Disconnect the T4 terminal connector.
(c) 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. CHECK VIDEO TERMINAL





(a) Reconnect the T4 terminal connector.
(b) Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions, as shown in the table below.
Waveform:





Result





C -- REPLACE VIDEO TERMINAL
B -- REPLACE VIDEO TERMINAL
A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE