Philips 20PT643F Service Manual page 77

Service manual
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Audio
Figure: Audio alignment menu
No alignments are necessary for the AUDIO sub menu. Use the default values.
AF-M (NICAM threshold)
Default value is 300.
To adjust AF-M:
1. To enter SDAM, press the following key sequence on the remote control
transmitter: 0 6 2 5 9 6 directly followed by the MENU button (do not allow the
display to time out between entries while keying the sequence).
2. Use the MENU UP/DOWN keys to highlight the AUDIO sub menu.
3. Press the MENU LEFT/RIGHT keys to enter the AUDIO sub menu.
4. Use the MENU UP/DOWN keys to select AF-M.
5. Use the MENU LEFT/RIGHT keys to adjust the value of AF-M to 300.
6. Press the MENU button to return to the top level SDAM menu.
7. To ensure the AF-M setting is saved:

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