5.1. ADJUSTMENT CONDITIONS AND PRECAUTIONS
1.
Approximately 30 minutes should be allowed for warm up before proceeding.
2.
Adjustments should be undertaken only on those necessary elements since most of them have been carefully
preset at the factory.
3.
ESD protection is needed before adjustment.
5.2. MAIN
ADJUSTMENTS
NO. FUNCTION
DESIGNATION
1.
White Balance
Function Key
2. GEOMETRY
Function
Key
5.3. ALIGNMENT
PROCEDURES
Adjustment Conditions and Precautions:
(A).
Power supply voltage:
AC 110/120V
±
10% 60 Hz
±
5%, AC 220/240V
±
10% 50 Hz
±
5%.
(B).
Warm up time:
The display must be power ON for at least 30 minutes at full white pattern before starting alignments.
This is especially critical in color temperature and white balance adjustments.
(C).
Signals: reference the front detail specifications and timing table.
Video: reference the front detail specifications.
1.
Adjustment of White Balance:
A.
TIMING: 1280x1024 64KHz/60Hz.
B.
PATTERN: 5 Blocks.
C.
LCD MONITOR set to 1280x1024 80K/75Hz BURN IN and warm up over 30 minutes.
D.
CA110 color analizer at the center of screen and along a perpendicular to the screen at 20cm from the
display.
E.
Power turn off, Press
“
▲
” and “ ”
and turn on power at the same time after power LED is on,
release
“
▲
” and “ ”
key, Then press “ ” key go to factory mode. (Fig.1)
2
2
1
(Fig.1)
F.
Adjust Color Temperature:
(1)
EEPROM INIT (5 BLOCKS):
Press
“
▼
” key move cursor to EEPROM INIT, Press key then monitor will INIT ADC value.
(2)
Press “
▲
” key move cursor to “White Balance”, Press key do white balance adjustment.
(3)
Press “
▼
” key move cursor to “Color Temerature Adjust”, Press key, Then OSD will display
Fig.2
2
2
2
5. Adjusting Procedure
17
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VE710s/b-2
VA721
