Sharp XV-C100A, Service Manual

Page: 20 / 122

XV-C100A/M/E
20
No. Adjustment Item Adjustment Conditions Adjustment Procedure
1. Receive the NTSC half-colour bar
signal.
2. Connect the dual-beam oscilloscope
between pin (3) of P1401 and GND.
3. Press S2001 to call up the ADJ IN
mode and select the following subject.
Group: VIDEO 2
Subject: COLOR
NTSC colour
(DAC) (gamma
correction on) 15
16 PAL colour
(DAC) (gamma
correction on) 1. Receive the PAL half-colour bar signal.
2. Connect the dual-beam oscilloscope
between pin (3) of P1401 and GND.
3. Press S2001 to call up the ADJ IN
mode and select the following subject.
Group: VIDEO 2
Subject: P-COLOR
1. Receive the NTSC 10-step pattern
signal.
2. Connect the dual-beam oscilloscope
between pin (3)(R) (or pin (1)(B)) of
P1401 and GND.
3. Press S2001 to call up the ADJ IN
mode and select the following subject.
Group: VIDEO 2
Subject: R-BIAS, B-BIAS
R-bias
B-bias
14 • Using the
'
and
"
keys, adjust the
difference between the white levels
to 3.0±0.05 Vp-p.
• Using the
'
and
"
keys, adjust the
difference between the 100% white
level and the primary red level to
0±0.05 Vp-p.
100% white Primary red
100% white Primary red
• Using the
'
and
"
keys, adjust the
difference between the 100% white
level and the primary red level to
0.10±0.05 Vp-p.