ViewSonic N3250wb-1G, Руководство по обслуживанию

Страница: 21 / 82

1. Function Test
1.1. Product
- 32” LCD TV
1.2. Test Equipment
-PC signal generator: CHROMA 2525 CARD ,CHROMA 2327 or 2329,Pioneer
DV-S969AVi.
-TV and Video signal generator.
-Color analyzer: MINOLTA CA210.
-Power meter: CP-310A or CP-320A.
-AC power supply transformer: 110V/120V ±10% 60Hz ±5%.
220V/240V±10% 50Hz ±5%.
-Digital ammeter
1.3. Test Condition
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.
1.4. Test Display Modes & Pattern
1.4.1 EEPROM INIT
A. Timing : 1280X1024@60Hz.
B. Pattern : Cross hatch.
C. Switch off the power and press the “
▲ ” and “enter ” key simultaneously, and
switch on the power. At this time we can enter into the factory mode.
D. Select the “EEPROM INIT” item and press “enter”key to reset the EEPROM.
1.4.2 COLOR TEMPERATURE ADJUSTING
PC MODE:
A. Timing : 1280X1024@75Hz.
B. Pattern : 16 gray.
C. Set CA110 color analizer at the center of screen and along a perpendicular to the
screen at 20cm from the display.
D. Press menu key select the OSD page on INPUT SELECT and select MAIN:VGA.
E. Press menu key change the OSD page to adjust page.
F. Press
“ ▼ ” key to select the “ WHITE BALANCE” item in the factory mode and
press “enter ”key, then the white balance will be auto dadjusted .
G. Color temperature verification :
USER x=0.283±0.015 y=0.297±0.015
1.4.3 Power Consumption Check ( VGA MODE )
A. TIMING: 1360 x 768@60Hz
B. Pattern: 1010UPRIGHTNESS PATTERN
C. BRIGHTNESS=MAX,
CONTRAST=MAX.
D. The power that each MODE consumed is shown in Chart 1.
MODE
MAX POWER COMSUMED POWER LED COLOR
NORMAL
200W(max) for 32” BLUE
Stand-by
3W (max) RED
Chart 1
1.4.4 Check the position of the picture displayed and phase auto adjusting (VGA MODE).
Depend on the TIMING of TIMING TABLE (TABLE 3) to switch MODE in order,
stay about 10 seconds each MODE, it can changed and stored automatically each
ViewSonic Corporation
Confidential - Do Not Copy
N
3250
w
b
-1
G
18
5. Adjusting Procedure