Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (W/ Multi-display): Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

The stereo jack adapter sends an external device sound signal to the radio receiver through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier, and then is sent to the speakers.
If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier, radio receiver, or speakers.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO JACK ADAPTER)




(a) Disconnect the L57 or L55 receiver connector.
(b) Disconnect the L70 adapter connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for CD changer models





for DVD changer models





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE