LG Electronics 20LS7D(C)-UB service manual Chroma & Brightness, White

Page 7

5.Chroma & Brightness

5.1. FOR 23LC7D (CONDITION : EZ-Picture "Daylight")

No

Item

 

 

Min

Typ

Max

Unit

 

 

 

 

 

 

 

 

 

 

1

White peak brightness

 

 

360

450

 

cd/m

 

 

 

 

 

 

 

 

 

 

 

 

 

 

260

450

 

cd/m

 

 

 

 

 

 

 

 

 

 

2

Contrast ratio

 

 

550

700

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

400

700

 

 

Refer to LCD SPEC.

 

 

 

 

 

 

 

 

 

3

Brightness uniformity

 

 

 

 

1.25

 

 

 

 

 

 

 

 

 

 

 

4

Color coordinate

RED

X

Typ -0.03

0.638

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

5

 

 

Y

Typ -0.03

0.337

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

6

 

GREEN

X

Typ -0.03

0.299

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

7

 

 

Y

Typ -0.03

0.604

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

8

 

BLUE

X

Typ -0.03

0.145

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

9

 

 

Y

Typ -0.03

0.059

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

10

 

WHITE

X

Typ -0.03

0.280

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

11

 

 

Y

Typ -0.03

0.292

Typ +0.03

 

 

 

 

 

 

 

 

 

 

 

12

White Balance Target

Cool

X

Typ -0.015

0.274

Typ +0.015

 

 

 

 

 

 

 

 

 

 

 

13

 

 

Y

Typ -0.015

0.274

Typ +0.015

 

 

 

 

 

 

 

 

 

 

 

14

 

Medium

X

Typ -0.015

0.287

Typ +0.015

 

 

 

 

 

 

 

 

 

 

 

15

 

 

Y

Typ -0.015

0.289

Typ +0.015

 

 

 

 

 

 

 

 

 

 

 

16

 

Warm

X

Typ -0.015

0.314

Typ +0.015

 

 

 

 

 

 

 

 

 

 

 

17

 

 

Y

Typ -0.015

0.318

Typ +0.015

 

 

 

 

 

 

 

 

 

 

 

18

Viewing angle

 

 

140

176

 

 

Right / Left

 

 

 

 

 

 

 

 

 

19

 

 

 

140

176

 

 

Up / Down

 

 

 

 

 

 

 

 

 

20

Color Temperature

Medium

 

8,300

9,300

10,300

 

 

 

 

 

 

 

 

 

 

 

 

 

Cool

 

11,000

12,000

13,000

 

 

 

 

 

 

 

 

 

 

 

 

 

Warm

 

5,500

6,500

7,500

 

 

 

 

 

 

 

 

 

 

 

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Image 7
Contents LCD TV Contents Do not use a line Isolation Transformer during this check General GuidanceServicing Precautions Diode Removal/Replacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Power Output, Transistor Device Removal/ReplacementGeneral SpecificationTV SpecificationApplication range Test method White Chroma & BrightnessComponent Video Input Y, CB/PB, CR/PR RGB input PC/DTV Mechanical specificationApplication Object Adjustment InstructionSet Method ADC-Set Adjustment23LS7D-UB RGB Preparation for Adjustments & Setting of DeviceRequired Test Equipment 23LS7D-UB HdmiRequired Equipment Adjustment of White BalanceTV/CATV doesnt display TroubleshootingVideo doesnt display Component doesnt display Rgbpc doesnt display Hdmi doesnt display LCD Exploded View Exploded View Parts List Replacement Parts List Description / Specification C1608C0G1H220JT 22pF 5% 50V C0G -55TO+125C DIODEs TRANSISTORs & FETs ICsRESISTORs MNR04M0APJ680 68OHM 5% 1/16W 4P 8P R1185 R4007 0RJ1001C678 R4147 R6031 JACKs CONNECTORsSWITCHes COILs & FILTERs & INDUCTORsLED,DIP BL-BUBGE301 Round 3MM OTHERsPage Page Mar