Sharp XV-ZW99U Service Manual page 26

xv-zw99u
1
NO. Adjustment Position Adjustment Conditions
Adjustment Method
12 RGB 1. Feed the 16-step pattern signal(VGA or
l
Using the A and v keys, adjust the
Contrast (DAC) SVGA) to the computer input terminal.
data so that the 16th~step level
2. Connect the oscilloscope between pin (2)
becomes green bit-less (noise).
of P3004 and GND.
16
3. Press S2001 to call up the ADJ IN mode
and select the following subject.
Group: RGB
Subject: GAIN
l3 R drive
B drive
(DAC)
1. Feed the 16-step pattern signal(VGA or
l
Using the A and 'I keys, adjust the
SVGA) to the computer input terminal.
data so that the 16th-step level
2. Connect the dual-beam oscilloscope
becomes bit-less (noise). ,6
between pin (1) of P3004,pin(3) of P3004
and GND.
3. Press S2001 to call up the ADJ IN mode
and select the following subject.
Group: RGB, RGB
Subject: R-D, B-D
14 OSD 1. Feed the 16-step pattern signal(VGA or
l
Using the A and 7 keys, adjust the
Mix-amp gain SVGA) to the computer input terminal. difference between the sixteenth-step
2. Connect the oscilloscope between pin (2)
level and the pedestal level to 0.96
of P1002 and GND.
*0.05 vp-p.
3. Press S2001 to call up the ADJ IN mode
16
-c-
and select the following subject.
Group: OUTPUT2
Subject: MC
15 RGB White-
White level
RGB Gain
@AC)
1. Feed the 16-step pattern signal(VGA or
l
Using the A and v keys, adjust the
SVGA) to the computer input terminal. difference between the gain and W-
W level, as shown below.
2. R: Connect the oscilloscope between
TP1030 and GND.
G: Connect the oscilloscope between
TP1032 and GND.
B: Connect the oscilloscope between
TP1035 and GND.
3. Press S2001 to call up the ADJ IN mode
and select the following subject.
R: Group: OUTPUT1
Subject: R-BLK, R-GAIN
G: Group: OUTPUT1
Subject: G-BLK, G-GAIN
B: Group: OUTPUT1
Subject: B-BLK, B-GAIN
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.________ __.....____ ________
W-W level
_.______ __....- __________.___
Gain
A
V
GNO
R : Gain 3.3Vp-p, W-W level 2.6V
G : Gain 3.3Vp-p, W-W level 2.6V
B : Gain 3.3Vp-p, W-W level 2.6V
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