ViewSonic E70-3 Service Manual page 29

E70-3 Service Manual
(B)1. Set 9300 mode and then adjust SCREEN VR (G2) to 1.0FL.
2. Enter full white pattern and start alignment system to adjust dark balance to X=281+ 5
Y=3112 5.
3. disable R.G.B input and set BRI - DAC value equal to 50 and adjust SUB- BRI DAC
value to get light output about 0.084 0.1FL (if impossible repeat ITEMB).
4. Enter 2" square pattern and adjust SUB-CONT DAC value equal to 50+ 2.0FL.
5. Enter full white pattern and adjust ABL DAC value equal to 32+ 0.5FL.
(C)Set 6300 mode and repeat ITEM B then get X=313+ 5, Y=329t 5, Y=50+ 2.0FL.
(D)Set 5000 mode and repeat ITEM B then get X=3464 5, Y=3594 5, Y=50+ 2.0FL.
§. Focus Verification Condition:
Conditions: (a) Set 48KHZ 1024x768 and EXT. BRIT. VR at detent. EXT. CONT. VR at
max.
(b) Use text mode pattern especially "@" character.
(c) Let whole picture look clearly by adjusting static and dynamic focus VR.
6. Display performance and geometric adjustment:
Conditions:
(1) equipment: a. 80486 PC. with printer port.
b. PC cable.
(2) File : © MAS.EXE (Main program).
product file
system file
(3) Main menu: Press F12 Adjust geometry
KEY select item
Increase, Decrease DAC value by one
step
le ] ee | Big step INC, DEC DAC value
zs Abort
OK
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