PG-C20XE (serv.man5). Section 2 - Service Manual Text - Sharp Projector Service Manual (repair manual). Page 26

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26
No.
Adjusting point
Adjusting conditions
Adjusting procedure
PG-C20XU
PG-C20XE
AN-Z7T
11
Video CON-
TRAST adjust-
ment
1. Feed the NTSC 10-step
signal.
2. Select the following group,
sub-group and subject.
Group : Adjust VIDEO Image
Sub-group: VPC3230
Subject : Contrast
3. Connect the synchroscope
to TP1402.
»
First reach a setting where the color tone level 10
gets saturated. Then decrease the setting by one
point.
12
Color saturation
adjustment
1. Feed the color bar signal.
2. Select the following group,
sub-group and subject.
Group : Adjust VIDEO Image
Sub-group: VPC3230
Subject : Color
»
Make sure the setting is 128.
0-gradation
10-gradation
0.8Vp-p
10
Video BRIGHT-
NESS adjust-
ment
1. Feed the NTSC 10-step
signal.
2. Select the following group,
sub-group and subject.
Group : Adjust VIDEO Image
Sub-group: VPC3230
Subject : Bright
»
Make sure the setting is as shown below.
PG-C20XU ........ 142
PG-C20XE ........ 145
13
PSIG adjust-
ment
1. Select the following group,
sub-group and subjects.
Group : Adjust VIDEO image
Sub-group: CXA2111R
Subject : PRGLEV
SIDLEV
2. Connect the synchroscope
to TP1210.
3. Using the NTSC 10-step
input signal, make sure that
there is no vertical stripes
appearing every 12 dots. (If
white or black vertical
stripes appear, fine-adjust
the SIDLEV setting.)
PSIG
»
Make sure the setting is as shown below.
PRGLEV ........... 61
SIDLEV ............. 170

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