Panasonic TH-43JX800, Technical Manual

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<LCD Panel Test Mode>
: When abnormal picture is displayed, troubleshoot by the test pattern in LCD module.
How to enter :
JX700*/800-83#*/900W (Android TV)
Press "volume(-)" button of the TV unit, then press “Yellow" button of the remote control 3 times.
( Do not keep pressing the Volume (-) button, just press once. Press 4 keys continuously. )
How to exit :
Switch off the TV unit
#)The test pattern is created by the circuit in LCD Panel Module(T-CON board).
Troubleshoot for Picture Problem -1
26
2 patterns are automatically changed.
Android models are different procedure from previous models.
The Power LED will Blink during this mode.
TH- 43/49/55/65JX800*, 900W (Android TV)
TX- 40/50/58/65JX800-83#*, TH-40/50/58/65JX700* (Android TV)
Some patterns are automatically changed. The patterns are depend on the LCD panel.