| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Audio/Video | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000015J300KX |
| Title: AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Sound Signal Circuit between Video Terminal and Multi-display Controller |
DESCRIPTION
This is the sound signal circuit from the video (video adapter) terminal to the multi-display selector.
HINT:
"Multi-display Controller" refers to the multi-display selector.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK MULTI-DISPLAY SELECTOR |
|
(a) Disconnect the L25 selector connector. |
(b) Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions shown in the chart below.
OK:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L25-9 (TVL+) - Body ground |
Audio sound is being produced |
A waveform synchronized with sound is output |
|
L25-7 (TVR+) - Body ground |
|
|
2. |
CHECK HARNESS AND CONNECTOR (REMOTE CONTROL ADAPTER - MULTI-DISPLAY SELECTOR) |
|
(a) Disconnect the P1 adapter connector. |
(b) Disconnect the L25 selector connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P1-5 (VAR+) - L25-7 (TVR+) |
Always |
Below 1 Ω |
|
P1-6 (VAL+) - L25-9 (TVL+) |
||
|
P1-7 (VA-) - L25-11 (SLDE) |
||
|
P1-8 (ADPG) - L25-6 (ADPI) |
||
|
L25-7 (TVR+) - Body ground |
Always |
10 kΩ or higher |
|
L25-9 (TVL+) - Body ground |
||
|
L25-11 (SLDE) - Body ground |
||
|
L25-6 (APDI) - Body ground |
|
|
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