Sound Signal Circuit between Radio Receiver and Television Display Assembly

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Sound Signal Circuit between Radio Receiver and Television Display Assembly

DESCRIPTION

This circuit sends a sound signal from the television display assembly to the radio receiver assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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





(a) Disconnect the U2 television display assembly connector.
(b) Disconnect the I8 radio receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the television display assembly connector.
(e) Reconnect the radio receiver assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT TELEVISION DISPLAY ASSEMBLY





(a) Reconnect the U2 television display assembly 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.

OK: Waveform:





(c) Reconnect the television display assembly connector.

NG -- REPLACE TELEVISION DISPLAY ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE