Philips 20PT643F Service Manual page 37

How to store SAM settings
To store settings changed in SAM leave the top level SAM menu by using the POWER
button on the remote control transmitter or the television set.
How to exit SAM
Switch the set to STANDBY by pressing the POWER button on the remote control
transmitter or the television set.
If you turn the television set off by removing the AC power (i.e., unplugging the
television) without using the POWER button, the television set will remain in SAM when
AC power is reapplied.
Service Default Mode (SDM)
Purpose
To create a predefined setting for measurements to be made.
To override software protections.
To start the blinking LED procedure.
To change option settings.
To display the error code buffer.
Specifications
Tuning frequency: 61.25 MHz (channel 3).
Color system: NTSC M.
All picture settings at 50% (brightness, color contrast, hue).
Bass, treble and balance at 50 %; volume at 25 %.