5. Adjusting Procedure
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.
V-com Voltage
R124 (VCOM ADJ)
2.
Eeprom Initial
Function Key
3.
White Balance
Function Key
4.
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 V-com Voltage:
A.
Timing : 1024x768@60Hz.
B.
Pattern : The picture of “
Windows
Shut
-D
own ” or Full screen pixel ON/OFF pattern.
C.
Adjust R124 to
make
the center of the screen
stable
.
2.
Eeprom Initial:
A.
Timing : 1024x768@60Hz.
B.
Pattern : Cross hatch.
C.
Switch off the power and press the “
▲
” and “ 2 “ key simultaneously,
while
on the power. At this time
the display will
enter into the factory mode
after
pressing
“key.
D.
Select the “EEPROM INIT” item and press “ 2 “key to reset the Eeprom.
3.
White Balance Adjustment :
A.
Timing : 1024x768@60Hz.
B.
Pattern : Full white.
!
!
ViewSonic Corporation
13
Confidential
– Do Not Copy
VE155s
, VE500-2
VE
15
5
/b, VA520-2
switch
ing
the “
1
