Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001AM5003X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: No Sound can be Heard from Speakers; 2007 MY LX470 [08/2006 -        ]

No Sound can be Heard from Speakers

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK RADIO RECEIVER ASSEMBLY

(a) Is radio operating normally?

OK

REPLACE RADIO RECEIVER ASSEMBLY

NG

2.

CHECK NOISE

(a) Is hiss noise produced by non-functioning speaker?

OK:

Hiss noise is not from speaker.

NG

REPLACE RADIO RECEIVER ASSEMBLY (RECHECK SYSTEM AFTER REPAIR)

OK

3.

CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - SPEAKER)
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

4.

REPLACE SPEAKER

(a) Temporarily install another speaker. Function OK?

OK

SPEAKER FAULTY

NG

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY (RECHECK SYSTEM AFTER REPAIR)