Sound Signal Circuit between Stereo Component Tuner Assembly and Television Display Assembly

AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: Sound Signal Circuit between Stereo Component Tuner Assembly and Television Display Assembly
- Sound Signal Circuit between Stereo Component Tuner Assembly and Television Display Assembly

DESCRIPTION

This is the sound signal circuit from the television display assembly to the stereo component tuner assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK STEREO COMPONENT TUNER ASSEMBLY

(a) Disconnect the L18 stereo component tuner assembly connector.





(b) Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions, as shown in the chart below.

Signal Waveform:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (STEREO COMPONENT TUNER - TELEVISION DISPLAY)

OK -- REPLACE STEREO COMPONENT TUNER ASSEMBLY Removal

2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT TUNER - TELEVISION DISPLAY)

(a) Disconnect the L18 stereo component tuner assembly connector.

(b) Disconnect the U1 television display assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table