Adjustment Procedure - ViewSonic N2201w-1M Service Manual

5. Adjusting Procedure
1. Function Test
1.1. Product
- 22" 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%.
-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 : 1680X1050@60Hz.
B.
C.
D. Press "up" or "down" to select "Other Setting" items as FIG. 2. Press "up" or "down" to
E.
1.4.2 COLOR TEMPERATURE ADJUSTING
PC MODE:
A. Timing : 1680X1050@60Hz.
B.
C.
D. Press "INPUT" one or more times to select the video mode, select "PC".
E.
F.
G. Press "OK" on the remote control to finish the "ADC Setting" automatic adjustment.
H. Color temperature verification :
ViewSonic Corporation
220V/240V±10% 50Hz ±5%.
Pattern : Cross hatch.
Turn on the power and press "INPUT+ 2 + 5 + 8 + 0" on the remote control in turn to
enter Factory mode as FIG. 1.
select "Database Init" items, Press "right" to "Database Init" automatic adjustment.
The STARTING SETUP feature appears. Setup your TV/DVD by the owner manual.
Factory Menu
Video Quality
ADC Setting
ColorTemp Setting
Other Setting
About...
Fig. 1
Pattern : 5-MOSAIC.
Set CA110 color analizer at the center of screen and along a perpendicular to the
screen at 20cm from the display.
press "INPUT+ 2 + 5 + 8 + 0" on the remote control in turn to
enter Factory mode as FIG. 3.
Press " " key to select the " ADC Setting" item in the factory mode and press "
select "ADC Auto" items, Press "right" to "ADC Setting" automatic adjustment.press
"ENTER" key, then the white balance will be auto adjusted as FIG. 4.
Press "OK" on the remote control to exit Factory mode.
USER
Factory Menu
Video Quality
ADC Setting
ColorTemp Setting
Other Setting
About...
Fig. 3
Database Init
Shipment Setting
Debug Mode
White Pattern
DLC
x=0.313±0.015
ADC Setting For YPBPR2
R-Gain
G-Gain
B-Gain
R-offset
G-offset
B-offset
ADC Auto
18
Confidential - Do Not Copy
Other Setting
off
OFF
off
Fig. 2
y=0.329±0.015
119
56
104
128
128
128
Fig. 4
N2201w-1M
" to