Philips 7603 series, Service Manual

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Service Default Mode (SDM)
Purpose
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To create a predefined setting to get the same measurement results as given in this manual.
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To override SW protections.
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To start the blinking LED procedure.
Specifications
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Tuning frequency: 61.25 MHz (channel 3).
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Color system: NTSC.
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All picture settings at 50 % (brightness, color contrast, hue).
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Bass, treble and balance at 50 %; volume at 25 %.
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All service-unfriendly modes (if present) are disabled, like:
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(sleep) timer,
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child/parental lock,
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blue mute,
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hotel/hospitality mode
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auto switch-off (when no 'IDENT' video signal is received for 15 minutes),
−
skip / blank of non-favorite presets / channels,
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auto store of personal presets,
−
auto user menu time-out.