Sound Signal Circuit between Video Terminal and Television Display

DESCRIPTION

This is the sound signal circuit from the video (video adapter) terminal to the television display assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

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

1. 1
   Disconnect the connectors from the video (video adapter) terminal and television display assembly.
2. 2
   Measure the resistance according to the value(s) in the table below.

Standard resistance

2 INSPECT VIDEO TERMINAL

1. 1
   Reconnect the video (video adapter) terminal connector.
2. 2
   Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions, as shown in the chart.

HINT: An external device system is playing (When the video (video adapter) terminal is used).

Signal waveform

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE