ViewSonic N4285p-4M, Руководство по обслуживанию

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1. Function Test
1.1. Product
- 42” 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
Before function test and alignment, each LCD TV should be run-in and warmed up for at
least 30 minutes with the following conditions:
(a) In room temperature,
(b) With full-white screen, and 32 grey scale,
(c) With cycled display modes.
1.4. Test Display Modes & Pattern
1.4.1 EEPROM INIT
A. Press ‘POWER’, ‘CH ▲ ’and ‘ENTER’ at the same time, then go into the
FACTORY MODE.
Fig. 1
B. Figure 1,Select EEPROM INITIAL and press ENTER. The act of EEPROM
INITIAL is completed when EEPROM INIT disappeared.
1.4.2 COLOR TEMPERATURE CHECK
PC MODE:
A. Timing: 1360*768@60Hz.
B. Pattern: 32 grey scale.
C. LCD TV should be run-in and warmed up for at least 30 minutes.
D. Color
Temperature adjusting.
1. VGA source: under the picture FULL WHITE and check the value of each
color.
Preset color for N4785P4M
x=0.283±0.030
y=0.298±0.030
2. YpbPr source: under the picture FULL WHITE and check the value of each
color.
Preset color for N4785P4M
x=0.283±0.030
y=0.298±0.030
5. Adjusting Procedure
ViewSonic Corporation
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N4285p-4M
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