Sharp XV-Z1U Service Manual page 26

xv-21 u
I
Step
Adjustment Position
Adjustment Conditions
Adjustment Method
17 Gamma
1. Receive the 10 step gray l
Using the Operation key switch A v, adjust level be-
WC)
scale signal of NTSC.
tween 2nd gradation and GND for
2. Connect the oscilloscope to
4.4 kO.1 v
pin (2) of P4303.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 4
Subject : RGB GAM 1
RGB CTR 1
adjust level between black level and GND for
3.0 &O.lV
4. Connect the oscilloscope to
pin (1) of P4303.
Group : VIDEO 4
Subject : R GAM 1
RCTRl
5. Connect the oscilloscope to
pin (3) of P4303.
Group
: VIDEO 4
Subject : B GAM 1
BCTRl
4
4.4v
3.ov
GND
18
SID signal level
1. Receive the 10 step gray
l
Using the Operation key switch A v, adjust level be-
scale signal of NTSC.
tween signal center and SID signal level.
2. Connect the oscilloscope to
pin (6) of P4303.
4.0 *O.lV
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO.3
Subject : SID CTR