ViewSonic 21PS Service Manual page 36

Multi-scan color crt display
Table of Contents

Advertisement

7. Image Stability Check
{1} Cnec« to se sure mat the size varanons are < 2
mm for hergontal size and < 1.5 mm for vertcal
$222 wren che white 'ull cot oatter> of Mo:
dsolayed and the AC voltage Is cnar
264
(2) Make sure that tne size variations are < 2 mm for
norizortal size ana < 1.5 mm for vertica' size when
contrast is changec to a minimum from maximu™ at
tre AC voltage of 120 wi2aov.
8. Blinking image Check
(1) Apply binking pattern signal. (100%)
ay
t
BV
AHS 1%0(MAX}
AVS 1%(MAX)
{2} Creck the mage stability at Moce-1
Creck it image changes due to blinking meets tre
standards below using the meroscope.
9. Circuit Operation Check
109 at HH not covered 19
(Check the protection one
re specifications
(2) Apply tH = 28 Kinz ard 84<Hz signal ang check 19
bbe sure nat sync flows,
10. Specific Function Check
{1} Create the crossnatch pattern using ine Moge-2
'sgnai
of the preset timing.
(2) Vary the variations of tne vertical size anc the
'deviation of the horizontal size ard check to be sure
that the horzontal size and norizonta! position
vanations meet the values gver below
Vertical size
> Fullscan
vonestbeehon..
=pibeadasia
5mm or more
Horizontal s2¢
> Fullscan
11. Power Save Function Check
The power consumption mus: meet the soecifications

Advertisement

Table of Contents
loading

This manual is also suitable for:

2182ps

Table of Contents