LG Electronics 50PT490B, 50PT490B-SA, 50PT490B-SD ADJUSTMENT INSTRUCTION

Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application Range

This spec. sheet applies to PB11K Chassis applied PDP TV

all models manufactured in TV factory.

2. Specification

(1) Because this is not a hot chassis, it is not necessary to use

an isolation transformer. However, the use of isolation

transformer will help protect test instrument.

(2) Adjustment must be done in the correct order. But it is

flexible when its factory local problem occurs.

(3) The adjustment must be performed in the circumstance of

25 cC ± 5 cC of temperature and 65 % ± 10 % of relative

humidity if there is no specific designation.

(4) The input voltage of the receiver must keep 100 V - 240 V,

50 / 60 Hz.

(5) Before adjustment, execute Heat-Run for 5 minutes.

VAfter Receive 100% Full white pattern (06CH) then

process Heat-run

(or “8. Test pattern” condition of Ez-Adjust status)

VHow to make set white pattern

1) Press Power ON button of Service Remocon

2) Press ADJ button of Service remocon. Select “10.

Test pattern” and, after select “White” using

navigation button, and then you can see 100% Full

White pattern.

* In this status you can maintain Heat-Run useless any

pattern generator

* Notice: if you maintain one picture over 20 minutes

(Especially sharp distinction black with white pattern –

13Ch, or Cross hatch pattern – 09Ch) then it can

appear image stick near black level.

3. Adjustment items

3-1. PCB Assembly adjustment

(1) Adjust 480i Comp1

(2) Adjust 1080p Comp1/RGB

- If it is necessary, it can adjustment at Manufacture Line

- You can see set adjustment status at “9. ADJUST

CHECK” of the “In-start menu”

3-2. Set Assembly Adjustment

(1) EDID (The Extended Display Identification Data )

(2) Color Temperature (White Balance) Adjustment

(3) Make sure RS-232C control

(4) Selection Factory output option

4. PCB Assembly Adjustment

4-1. Using RS-232C

- Adjust 3 items at 3-1 PCB assembly adjustments

“ (3) Adjustment sequence” one after the order.

(1) Adjustment protocol

(2) Necessary items before Adjustment items

OPattern Generator : (MSPG-925FA)

OAdjust 480i Comp1

(MSPG-925FA:model :209, pattern :65) – Comp1 Mode

OAdjust 1080p Comp1

(MSPG-925FA:model :225 , pattern :65) – Comp1 Mode

OAddjust RGB (MSPG-925FA:model :225 , pattern :65)

– RGB-PC Mode

* If you want more information then see the below Adjustment

method (Factory Adjustment)

(3) Adjustment sequence

Oaa 00 00: Enter the ADC Adjustment mode.

Oxb 00 40: Change the mode to Component1 (No actions)

Oad 00 10: Adjust 480i Comp

Oad 00 10: Adjust 1080p comp

Oxb 00 60: Change to RGB-PC mode(No action)

Oad 00 10: Adjust 1080p RGB

Oxb 00 90: Endo of Adjustmennt

< See ADC Adjustment RS232C Protocol_Ver1.0 >

Order Command Set response

1. Inter the aa 00 00 a 00 OK00x

Adjustment

mode

2. Change the XB 00 40 b 00 OK40x (Adjust 480i Comp1 )

Source XB 00 60 (Adjust 1080p Comp1)

b 00 OK60x (Adjust 1080p RGB)

3. Start ad 00 10

Adjustment

4. Return the OKx ( Success condition )

Response NGx ( Failed condition )

5. Read data ( main ) (main : component1 480i, RGB 1080p)

Adjustment ad 00 20 00000000000000000000000007c007b006dx

data ( main ) (main : component1 480i, RGB 1080p)

ad 00 30 000000070000000000000000007c00830077x

6. Confirm ad 00 99 NG 03 00x (Failed condition)

Adjustment NG 03 01x (Failed condition)

NG 03 02x (Failed condition)

OK 03 03x (Success condition)

7. End of ad 00 90 d 00 OK90x

Adjustment