Sharp XV-C1E, Service Manual

Page: 14 / 82

Adjustment
Adjustment Conditions
Adjustment Procedure
I NTSC
1. Receive the NTSC pattern
l
Turn until the image appears
running
signal.
as specified.
frequency
2. Make a short-circuit between pin (6) of
and
P A L
running
frequency
1. Receive the PAL pattern
l
Turn until the image appears
as specified.
2. Make a short-circuit between pin (6) of
and GND.
NTSC
horizontal
center (DAC)
1. Receive the NTSC pattern
l
Using the and keys, make the
signal.
just the same at right and
2. Press 52001 to call up the ADJ IN
l e f t .
mode and select the following subject.
Group:
VIDEO 1
Subject: H-CENT
PAL horizontal
center (DAC)
1. Receive the PAL pattern
l
Using the and keys, make the
signal.
just the same at right and
2. Press 52001 to call up the ADJ IN
left.
mode and select the following subject.
Group: VIDEO 3
Subject: PAL-H-CENT
Contrast (DAC)
Receive the NTSC pattern
l
Using the and keys, adjust the
(gamma
signal.
difference between the 100% white
correction on) 2. Apply 3.5 Vdc to pin (7) of to turn
level and the pedestal level to
off the gamma corrector.
3. Connect an oscilloscope between pin
(2) of and
I
4. Press to call up the ADJ IN
mode and select the following subject.
Group:
VIDEO 2
Subject: S-BIAS
5. Using the and keys, put the
waveform to its proper shape.
6. Select the following subject.
Group: VIDEO 1
Subject: SUB-R, SUB-G, SUB-B
Make sure all these subjects have an
entry of 0 (zero).
7. Adjust to get the highest gain.
8. Finally select the following subject.
Group: VIDEO
Subject: CONT
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