Philips L01.1E, Service Manual

Page: 55 / 72

Alignments GB 55 L01.1E 8.
• Lower Corner Parabola (LCP). Align straight vertical
lines in the lower corners of the screen.
• East West Trapezium (EWT). Align straight vertical
lines in the middle of the screen.
Figure 8-10
Vertical alignment
• Vertical slope (VSL). Align the vertical centre of the
picture to the vertical centre of the CRT. This is the first
of the vertical alignments to perform. For an easy
alignment, set SBL to ON.
• Vertical Amplitude (VAM). Align the vertical amplitude
so that the complete test pattern is visible.
• Vertical S-Correction (VSC). Align the vertical linearity,
meaning that vertical intervals of a grid pattern must be
equal over the entire screen height.
• Vertical Shift (VSH). Align the vertical centring so that
the test pattern is located vertically in the middle. Repeat
the 'vertical amplitude' alignment if necessary.
• Vertical Zoom (VX). The vertical zoom is added in for
the purpose of development. It helps the designer to set
proper values for the movie expand or movie (16x9)
compress. Default value is 25.
• Service blanking (SBL). Switch the blanking of the
lower half of the screen ON or OFF (to be used in
combination with the vertical slope alignment).
• H60. Align straight horizontal lines if NTSC input (60 Hz)
is used i.s.o. PAL (50 Hz).
• V60. Align straight vertical lines if NTSC input (60 Hz) is
used i.s.o. PAL (50 Hz).
Figure 8-11
In the table below, you will find the GEOMETRY default
values for the different sets.
Figure 8-12
8.3.5 Audio
Figure 8-13
No alignments are needed for the audio sub menu. Use the
given default values.
AT (Attack Time)
Default value is 8.
AF-M
Default value is 301.
A2T
Default value is 250.
QSS
OFF for mono sets, ON for stereo sets.
FMI
Fixed setting is OFF.
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