Display Signal Circuit between Video Terminal and Television Display

AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: Display Signal Circuit between Video Terminal and Television Display

Display Signal Circuit between Video Terminal and Television Display

DESCRIPTION

This is the display signal circuit from the video terminal to the television display.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK TELEVISION DISPLAY ASSEMBLY




(a) Disconnect the L26 display 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.

Measurement Condition





OK:
Waveform is as shown in the illustration.
NG -- CHECK HARNESS AND CONNECTOR (REMOTE CONTROL ADAPTER - MULTI-DISPLAY SELECTOR)
OK -- REPLACE TELEVISION DISPLAY ASSEMBLY
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:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY SELECTOR - TELEVISION DISPLAY ASSEMBLY)




(a) Disconnect the L22 selector connector.
(b) Disconnect the L26 display connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. REPLACE REMOTE CONTROL ADAPTER WITH NORMAL ONE AND CHECK
(a) Replace the remote control adapter Removal with a normal one and check if the same problem occurs again.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY SELECTOR
OK -- END (HEADPHONE TERMINAL IS DEFECTIVE)