BELINEA 10 55 70, Service Manual

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4.36. Color Purity
1. Input a full white pattern in primary mode and adjust
external brightness so there is no background brightness
and adjust external contrast to
Make a visual
check of color purity as follows:
red signal only; no green (G) or blue
should be visible.
the G signal only; no R or B should be visible.
the B signal only; no R or G should be visible.
4.37. Video Noise
Input a cross hatch pattern or full white pattern in primary
mode and make a visual check from a distance of
(19
inches) for any video noise or other on-screen interference.
Saving Check
1.
Input cross hatch pattern in primary mode.
2. Turn OFF H-Sync signal, the power indicator have
to change the emitting color from green to orange, then
turn ON H-Sync signal again, the picture shall be vis-
ible.
3.
Turn V-Sync signal, the power indicator have
to change the emitting color from green to orange,
turn ON V-Sync signal again, the picture shall be vis-
ible.
4 .
Turn OFF H/V-Sync signal, the power indicator LED
have to change the emitting color from green to orange,
then turn ON H/V-Sync signal again, the picture shall
be visible.
4.39. Audio Power Amplifier Check
1. Input audio signal from the audio signal generator to
U.U.T of the audio in R/L-Side.
2 . Push L-Side switch on fixture and check the U.U.T of
the L-Side speaker out.
3. Push R-Side switch on fixture and check the U.U.T of
the R-Side speaker out.
4 . Push L/R-Side switch on fixture and check the
of the L/R-Side speaker out.
5 .
Push phone switch on fixture and check the U.U.T of
the phone jack out.
4.40. DDC Data Wirting
the DDC data in EEROM.