Panasonic TH-42PV500B - Teletext Operation; Analogue Teletext Features and Navigation

11.5. TEXT Vref Auto Adjustment
Procedure Remarks
Receive a steady signal.
Adjust it after aging enough.
1. Enter in service mode 1 then select "TXT adj. Access" item.
2. Start Auto adjustment by push "Blue" key
[Test pattern]
Note:
Under operating,
The character "TXT Adj. Access" becomes red.
Detection window will appear near bottom.
Detection window move R - G - B at the bright test pattern,
Then,
Detection window move R - G - B at the dark test pattern.
And finish auto adjustment.
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TH-42PV500E / TH-42PV500B / TH-37PV500E / TH-37PV500B