Philips 40PFL4901/F7 Service Manual page 24

14. Press [VOLUME DOWN] button to shift to the
"Debugging Message" mode.
If there is no message under "[WB]" section, this
adjustment completes.
If "Drive settings are NG. Retry again." is
displayed, repeat above steps from 5. to 13. Then
check "Debugging Message" again. If "Drive
settings are NG. Retry again." is displayed,
replace the LCD Panel or Digital Main CBA.
15. To cancel or to exit from the White Balance
Adjustment, press [CH RETURN] or [PREV CH]
button.
5-3 PL15.01EA