LG 50PA4900-UD Schematic

Internal Use Only

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PLASMA TV

SERVICE MANUAL

CHASSIS : PU21A

MODEL : 50PA4900 50PA4900-UD

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Printed in KoreaP/NO : MFL67341809 (1204-REV00)

CONTENTS

CONTENTS .............................................................................................. 2

SAFETY PRECAUTIONS ........................................................................ 3

SPECIFICATION ...................................................................................... 4

ADJUSTMENT INSTRUCTION ............................................................... 5

BLOCK DIAGRAM ................................................................................. 13

EXPLODED VIEW .................................................................................. 14

SCHEMATIC CIRCUIT DIAGRAM ..............................................................

Only for training and service purposes

- 2 -

AC Volt-meter

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.

It will also protect the receiver and it's components from being damage d by accidental sho rt s of the circui tr y that may be inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1 W), keep the resistor 10 mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to be sure the set is safe to operate without damage of electrical shock.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 M When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer.

Ω and 5.2 MΩ.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check. Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any vol ta ge measured must not exceed 0.75 volt RMS which is corresponds to

0.5 mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.

Leakage Current Hot Check circuit

Good Earth Ground such as WATER PIPE,

To Instrument's exposed METALLIC PARTS

CONDUIT etc.

Only for training and service purposes

- 3 -

SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement

1. Application range

This spec sheet is applied all of the 42” 50”, 60” PDP TV with PU21A chassis.

2. Requirement for Test

Each part is tested as below without special appointment.

(1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C (2) Relative Humidity: 65 % ± 10 % (3) Power Voltage

: Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products is marked by models.

(4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with

BOM.

(5) The receiver must be operated for about 5 minutes prior to the adjustment.

3. Test method

(1) Performance: LGE TV test method followed (2) Demanded other specification

- Safety : CE, IEC specification

- EMC : CE, IEC

4. Model General Specification

No Item Specication Remark

1 Receiving System 1) ATSC / NTSC-M

2 Available Channel 1) VHF : 02~13

2) UHF : 14~69

3) DTV : 02-69

4) CATV : 01~135

5) CADTV : 01~135

3 Input Voltage 1) AC 100 ~ 240V 50/60Hz

4 Market NORTH AMERICA

5 Screen Size 42 inch Wide(1024 × 768)

50 inch Wide(1024 × 768) 50 inch Wide(1920 × 1080) 60 inch Wide(1920 × 1080)

6 Aspect Ratio 16:9

7 Tuning System FS

8 Module PDP42T4#### (1024 × 768)

PDP50T4#### (1024 × 768) PDP50R4#### (1920 × 1080) PDP60R4#### (1920 × 1080)

9 Operating Environment 1) Temp : 0 deg ~ 40 deg

2) Humidity : ~ 80 %

10 Storage Environment 1) Temp : -20 deg ~ 60 deg

2) Humidity : ~ 85 %

42PA all model 50PA all model 50PA all model 60PA all model

Only for training and service purposes

- 4 -

ADJUSTMENT INSTRUCTION

1. Application Range

This spec. sheet applies to PU21A 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) T he adjustment must be performed in the circumstance of

25 °C ± 5 °C of temperature and 65 % ± 10 % of relative humidity if there is no specific designation.

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

V~, 50/60 Hz.

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

■ After Receive 100% Full white pattern (06CH) then process Heat-run

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

■ How 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 sel ec t “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 mai ntain one picture over 20 minu te s

(Especially sharp distinction black with whit e pattern – 13Ch, or Cross hatch pattern – 09Ch) then it can appear image stick near black level.

3. Adjustment items

3.1. PCB Assembly adjustment

■ Adjust 480i Comp1

■ Adjust 1080p Comp1/RGB

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

● Yo u can see set adjustm en t status at “9. ADJUST

CHECK” of the “In-start menu”

3.2. Set Assembly Adjustment

■ EDID (The Extended Display Identification Data )

■ Color Temperature (White Balance) Adjustment

■ Make sure RS-232C control

■ Selection Factory output option

4. PCB Assembly Adjustment

4.1. Using RS-232C

- Adjust 3 items at 3.1. PCB assembly adjustments " 4.1. ■ Adjustment sequence" one after the order.

■ Adjustment sequence

Order command Set response

1. Inter the Adjustment mode

2. Change the Source

3.Start Adjustment ad 00 10

4. Return the Response

5. Read

Adjustment data

6. Conrm

Adjustment

7. End

of Adjustment

< See ADC Adjustment RS232C Protocol_Ver1.0 >

■ Necessary items before Adjustment items

● Pattern Generator : (MSPG-925FA)

● Adjust 480i comp1

(MSPG-925FA:model :209, pattern :65) - comp1 Mode

● Adjust 1080p comp1 (MSPG-925FA:model :225 , pattern :65) - comp1 Mode

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

- RGB-Pc Mode

* If you want more information then see the below Adjustment

method (Factory Adjustment)

■ Adjustment sequence

● aa 00 00: Enter the ADc Adjustment mode.

● xb 00 40: change the mode to component1 (No actions)

● ad 00 10: Adjust 480i comp

● ad 00 10: Adjust 1080p comp

● xb 00 60: change to RGB-Pc mode(No action)

● ad 00 10: Adjust 1080p RGB

● xb 00 90: Endo of Adjustmennt

aa 00 00 a 00 OK00x

XB 00 40 XB 00 60

( main ) ad 00 20 ( main ) ad 00 30

ad 00 99 NG 03 00x (Failed condition)

ad 00 90 d 00 OK90x

b 00 OK40x (Adjust 480i Comp1 ) (Adjust 1080p Comp1) b 00 OK60x (Adjust 1080p RGB)

OKx ( Success condition ) NGx ( Failed condition )

(main : component1 480i, RGB 1080p) 000000000000000000000000007c007b006dx (main : component1 1080p) 000000070000000000000000007c0083 0077x

NG 03 01x (Failed condition) NG 03 02x (Failed condition) OK 03 03x (Success condition)

Only for training and service purposes

- 5 -

5. Factory Adjustment

-> PU21A : USE INTERNAL ADC(LM1) : using internal pattern.

5.1. Auto Adjust Component 480i/1080p RGB 1080p

■ Summary : Adjustment component 480i/1080i and RGB 1080p is Gain and Black level setting at Analog to Digital converter, and compensate the RGB deviation

■ Using instrument

● Adjustment remocon, 801GF(802B, 802F, 802R) or

MSPG925FA pattern generator

( It can output 480i/1080i hor izontal 100% color bar

pa tter n sig nal , and i ts ou tput leve l mus t set tin g

0.7V±0.1V p-p correctly)

< Adjustment pattern : 480i / 1080p 60Hz Pattern >

* caution : Set Volume 0 after adjustment

5.2. Use Internal ADC(S7R)

- A D J ( EZ ADJ U S T ) -> 6. A D C C a l i bration -> ADC Calibration(START)

● You must make it sure its resolution and pattern cause every instrument can have different setting

● Adjustment method 480i Comp1, Adjust 1080p Comp1/

RGB (Factory adjustment)

● ADC 480i Component1 adjustment

- Check connection of Component1

- MSPG-925FA -> Model: 209, Pattern 65

● Set Component 480i mode and 100% Horizontal Color Bar Pattern( H o z T V 3 1 B a r ) , t h e n s e t T V s e t t o Component1 mode and its screen to “NORMAL”

● ADC 1080p Component1 / RGB adjustment

- Check connection both of Component1 and RGB

- MSPG-925FA -> Model: 225, Pattern 65

● Set Component 1080p mode and 100% Horizontal Color Bar Pattern( H o z T V 3 1 B a r ) , t h e n s e t T V s e t t o Component1 mode and its screen to “NORMAL”

● After get each the signal, wait more a second and enter

the “IN-START” with press IN-START key of Service remoco n. After then select “7. External ADC” wit h navigator button and press “Enter”.

● After Then Press key of Service remocon “Right Arrow

(VOL+)”

● You can see “ADC Component1 Success”

● Component1 1080p, RGB 1080p Adjust is same method.

● Component 1080p Adjustment in Component1 input

mode

● RGB 1080p adjustment in RGB input mode

● If you success RGB 1080p Adjust. You can see “ADC

RGB-DTV Success”

* EDI D (The Extended Display Identification Data)/DDC

(Display Data Channel) Download.

■ Summary

● It is established in VESA, for communication between

PC and Monitor without order from user for building user condition. It helps to make easily use realize “Plug and Play” function.

● For EDID data write, we use DDC2B protocol.

- Auto Download

■ After enter Service Mode by pushing “ADJ” key,

■ Enter EDID D/L mode.

■ Enter “START” by pushing “OK” key.

* Caution:

- Never connect HDMI & D-sub Cable when the user downloading .

- Use the proper cables below for EDID Writing

Only for training and service purposes

- 6 -

■ It only needs to PCM EDID D/L for North America Product.

(PU21A)

* Edid data and Model option download(RS232)

NO Enter

download MODE

Item download ‘Mode In’ download

CMD 1 A A

CMD 2 A E

Data 0 0 00

0 10

When transfer the

‘Mode In’,

Carry the command.

- Manual Download

■ Write HDMI EDID data

● Using instruments

- Jig. (PC Serial to D-Sub connection) for PC, DDC adjustment.

- S/W for DDC recording (EDID data write and read)

- D-sub jack

- Additional HDMI cable connection Jig.

● Preparing and setting.

- Set instruments and Jig. Like pic.5), then turn on PC and Jig.

- Operate DDC write S/W (EDID write & read)

- It will operate in the DOS mode.

EDID data Model

option download

Automatically download

(The use of a internal

pattern)

■ EDID data (Model name = LG TV)

- RGB HD

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

01 16 01 03 68 A0 5A 78 0A EE 91 A3 54 4C 99 26

0F 50 54 A1 08 00 31 40 45 40 61 40 01 01 01 01

01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88

36 00 B0 84 43 00 00 18 A0 0F 20 00 31 58 1C 20

28 80 14 00 B0 84 43 00 00 1E 00 00 00 FD 00 3A

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 58

- North America _2D_HD_PCM ONLY HDMI 1

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26

0F 50 54 A1 08 00 31 40 45 40 61 40 01 01 01 01

01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88

36 00 B0 84 43 00 00 18 A0 0F 20 00 31 58 1C 20

28 80 14 00 B0 84 43 00 00 1E 00 00 00 FD 00 3A

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 3F

02 03 1D F1 48 10 84 05 02 03 20 22 01 23 09 57

07 67 03 0C 00 10 00 B8 2D E3 05 03 01 01 1D 00

72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 02

3A 80 18 71 38 2D 40 58 2C 45 00 40 84 63 00 00

1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 40 84 63

00 00 9E 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 E5

< For write EDID data, setting Jig and another instruments >

Only for training and service purposes

- 7 -

- North America _2D_HD_PCM ONLY HDMI 2

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26

0F 50 54 A1 08 00 31 40 45 40 61 40 01 01 01 01

01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88

36 00 B0 84 43 00 00 18 A0 0F 20 00 31 58 1C 20

28 80 14 00 B0 84 43 00 00 1E 00 00 00 FD 00 3A

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 3F

02 03 1D F1 48 10 84 05 02 03 20 22 01 23 09 57

07 67 03 0C 00 20 00 B8 2D E3 05 03 01 01 1D 00

72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 02

3A 80 18 71 38 2D 40 58 2C 45 00 40 84 63 00 00

1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 40 84 63

00 00 9E 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 D5

- North America _2D_HD_PCM ONLY HDMI 3

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26

0F 50 54 A1 08 00 31 40 45 40 61 40 01 01 01 01

01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88

36 00 B0 84 43 00 00 18 A0 0F 20 00 31 58 1C 20

28 80 14 00 B0 84 43 00 00 1E 00 00 00 FD 00 3A

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 3F

02 03 1D F1 48 10 84 05 02 03 20 22 01 23 09 57

07 67 03 0C 00 30 00 B8 2D E3 05 03 01 01 1D 00

72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 02

3A 80 18 71 38 2D 40 58 2C 45 00 40 84 63 00 00

1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 40 84 63

00 00 9E 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C5

- Adjustment Color Temperature(White balance)

■ Using Instruments

● Color Analyzer: CA-210 (CH 10)

- Using LCD color temperature, Color Analyzer (CA-

210) must use CH 10, which Matrix compensated (White, Red, Green, Blue compensation) with CS-

2100. See the Coordination bellowed one.

● Auto-adjustment Equipment (It needs when Auto-adjustment – It is availed communicate with RS-232C : Baud rate: 115200)

● Video Signal Generator MSPG-925F 720p, 216Gray

(Model: 217, Pattern 78)

■ Connection Diagram (Auto Adjustment)

● Using Inner Pattern

● Using HDMI input

< connection Diagram for Adjustment White balance >

■ White Balance Adjustment If you can’t adjust with inner pattern, then you can adjust it using HDMI pattern. You can select option at “Ez-Adjust Menu – 7. White Balance” there items “NONE, INNER, HDMI”. It is normally setting at inner basically. If you can’t adjust using inner pattern you can select HDMI item, and you can adjust.

In manual Adjust case, if you press ADJ button of service remocon, and enter “Ez-Adjust Menu – 7. White Balance”, then automatically inner pattern operates. (In case of “Inner” originally “Test-Pattern. On” will be selected in The “Test-Pattern. On/Off”.

- See Working Guide if you want more information about EDID communication.

Only for training and service purposes

- 8 -

● Connect all cables and equipments like Pic.5)

● Set Baud Rate of RS-232C to 115200. It may set 115200

orignally.

● Connect RS-232C cable to set

● Connect HDMI cable to set

■ RS-232C Command (Commonly apply)

RS-232C COMMAND

[CMD ID DATA]

wb 00 00 White Balance adjustment start.

wb 00 10 Start of adjust gain

(Inner white pattern)

wb 00 1f End of gain adjust

wb 00 20 Start of offset adjust

(Inner white pattern)

wb 00 2f End of offset adjust

wb 00 ff End of White Balance adjust

(Inner pattern disappeared)

● “wb 00 00”: Start Auto-adjustment of white balance.

● “wb 00 10”: Start Gain Adjustment (Inner pattern)

● “jb 00 c0” :

● …

● “wb 00 1f”: End of Adjustment

* If it needs, offset adjustment (wb 00 20-start, wb 00 2f-

end)

● “wb 00 ff”: End of white balance adjustment (inner pattern

disappear)

■ Adjustment Mapping information

RS-232C

COMMAND

[CMD ID DATA]

Cool Mid Warm Cool Mid Warm

R Gain jg Ja jd 00 184 192 192 192

G Gain jh Jb je 00 187 183 159 192

B Gain ji Jc jf 00 192 161 95 192

R Cut 64 64 64 127

G Cut 64 64 64 127

B Cut 64 64 64 127

Meaning

CENTER

(DEFAULT)

● When Color temperature (White balance) Adjustment (Automatically)

- Press “Power only key” of service remocon and operate automatically adjustment.

- Set BaudRate to 115200.

● You must start “wb 00 00” and finish it “wb 00 ff”.

● If it needs, then adjustment “Offset”.

■ White Balance Adjustment (Manual adjustment)

● Test Equipment: CA-210

- Using PDP color temperature, Color Analyzer (CA-210) must use CH 10, which Matrix compensated (White, Red, Green, Blue compensation) with CS-2100. See the Coordination bellowed one.

● Manual adjustment sequence is like bellowed one.

- Turn to “Ez-Adjust” mode with press ADJ button of service remocon.

- Select “10.Test Pattern” with CH+/- button and press enter. Then set will go on Heat-run mode. Over 30 minutes set let on Heat-run mode.

- Let CA-210 to zero calibration and must has gap more 10cm from center of PDP module when adjustment.

- Press “ADJ” button of service remocon and select “7.White-Balance” in “Ez-Adjust” then press “►” button of navigation key. (When press “►” button then set will go to full white mode)

- Adjust at three mode (Cool, Medium, Warm)

- If “cool” mode

Let B-Gain to 192 and R, G, B-Cut to 64 and then control

R, G gain adjustment High Light adjustment.

- If “Medium” and “Warm” mode Let R-Gain to 192 and R,

G, B-Cut to 64 and then control G, B gain adjustment High Light adjustment.

- All of the three mode

Let R-Gain to 192 and R, G, B-Cut to 64 and then control

G, B gain adjustment High Light adjustment.

- With volume button (+/-) you can adjust.

- After all adjustment finished, with Enter (■ key) turn to

Ez-Adjust mode. Then with ADJ button, exit from adjustment mode

* Attachment: White Balance adjustment coordination and

color temperature.

● Using CS-1000 Equipment.

- COOL : T=11000K, ∆uv=0.000, x=0.276 y=0.283

- MEDIUM : T=9300K, ∆uv=0.000, x=0.285 y=0.293

- WARM : T=6500K, ∆uv=0.000, x=0.313 y=0.329

A X

Only for training and service purposes

- 9 -

● When tester will measure on Cool condition, adjust W30 on TV display menu.

● When tester will measure on medium condition, adjust 0 on TV display menu.

● When tester will measure on warm condition, adjust W30 on TV display menu.

● Using CA-210 Equipment. (10 CH)

- Contrast value: 216 Gray

Color

temperature

COOL CA-210 0.276 ± 0.002 0.283 ± 0.002

MEDIUM CA-210 0.285 ± 0.002 0.293 ± 0.002

WARM CA-210 0.313 ± 0.002 0.329 ± 0.002

- Brightness spec.

Item White average

Min 49 -20

Typ 60

Max +20

Unit cd/m² %

Remark - 100% Window White

Pattern

- 100IRE(255Gray)

- Picture: Vivid(Medium)

Test

Equipment

brightness

Color Coordination

x y

Brightness uniformity

- 85IRE(216Gray) 100% Window White Pattern

- Picture: Vivid(Medium)

6. GND and ESD Testing

6.1. Prepare GND and ESD Testing.

■ Check the connection between set and power cord

6.2. Operate GND and ESD auto-test.

■ Fully connected (Between set and power cord) set enter the

Auto-test sequence.

■ Connect D-Jack AV jack test equipment.

■ Turn on Auto-controller(GWS103-4)

■ Start Auto GND test.

■ If its result is NG, then notice with buzzer.

■ If its result is OK, then automatically it turns to ESD Test.

■ Operate ESD test

■ If its result is NG, then notice with buzzer.

■ If its result is OK, then process next steps. Notice it with

Good lamp and STOPER Down.

6.3. Check Items.

■ Test Voltage

● GND: 1.5KV/min at 100mA

● Signal: 3KV/min at 100mA

■ Test time: just 1 second.

■ Test point

● GND test: Test between Power cord GND and Signal

cable metal GND.

● ESD test: Test between Power cord GND and Live and

neutral.

■ Leakage current: Set to 0.5mA(rms)

6.4. POWER PCB Ass’y Voltage adjustment

(Va, Vs voltage adjustment)

6.4.1. Test equipment : D.M.M 1EA

6.4.2. Connection Diagram for Measuring : refer to g.1

5.3. Test of RS-232C control.

- Press In-Start button of Service Remocon then set the “4.Baud Rate” to 115200. Then check RS-232C control and

5.4. Selection of Country option.

- Selection of country option is allowed only North American model (Not allowed Korean model). It is selection of Country about Rating and Time Zone.

■ Models: All models which PU11A Chassis (See the rst

page.)

■ Press “In-Start” button of Service Remocon, then enter the

“Option” Menu with “PIP CH-“ Button

■ Select one of these three (USA, CANADA, MEXICO) de-

pends on its market using “Vol. +/-“button.

* Caution : Don’t push The INSTOP KEY after completing the

function inspection.

* Caution : Inspection only PAL M / NTSC

Only for training and service purposes

(g.1) PCB Assy Voltage adjustment

6.4.3. Adjustment method

6.4.3.1. Vs adjustment (refer g.1)

(1) Connect + terminal of D.M.M. to Vs pin of P811, connect

-terminal to GND pin of P811

(2) After turning VR901, voltage of D.M.M adjustment as

same as Vs voltage which on label of panel left/top ( deviation ; ±0.5V)

6.4.3.2. Va adjustment (refer g.1)

(1) After receiving 100% Full White Pattern, HEAT RUN. (2) Connect + terminal of D.M.M. to Va pin of P811, connect

-terminal to GND pin of P811

(3) After turning VR502,voltage of D.M.M adjustment as same

as Va voltage which on label of panel left/top (deviation; ±0.5V)

- 10 -

7. Default Service option.

7.1. ADC-Set.

■ R-Gain adjustment Value (default 128)

■ G-Gain adjustment Value (default 128)

■ B-Gain adjustment Value (default 128)

■ R-Offset adjustment Value (default 128)

■ G-Offset adjustment Value (default 128)

■ B-Offset adjustment Value (default 128)

7.2. White balance. Value.

Center(Default)

COOL Mid Warm

R Gain 192 192 192

G Gain 192 192 192

B Gain 192 192 192

R Cut 64 64 64

G Cut 64 64 64

B Cut 64 64 64

9. USB DOWNLOAD(*.epk le download)

■ Put the USB Stick to the USB socket

■ Press Menu key, and move OPTION

■ Press “FAV” Press 7 times

7.3. Temperature Threshold

■ Threshold Down Low 20

■ Threshold Up Low 23

■ Threshold Down High 70

■ Threshold Up High 75

Touch Pen Operating check

(Pen touch model only)

- applied model : 42/50PA4900 ,50/60PA6900

(1) Press Pen mode hot key to insert check mode in POWER

ONLY condition.

(Green Pen mode key on center of remocon)

(2) Pen check mode : You can see a 2X5 matrix. (Checker

have to use right-hand.)

(3) 2X5 Matrix construction : When the screen is divided by

xel in 16:9, matrix is applicable 14th,15th xel in row, 3rd ~ 7th xel in colume. And they are numbered from 1 to 10.

(TV & Jig Monitor is numbered samely.)

(4) When checker touched a box numbered 3 of Pen touch

TV, same box of JIG monitor blinks three times.

■ Select download le (epk le)

Only for training and service purposes

- 11 -

■ After download is nished, remove the USB stick.

■ Press “IN-START” key of ADJ remote control, check the

S/W version.

10. Tool option

Tool option 1 36992

Tool option 2 39178

Tool option 3 3697

Tool option 4 54863

Tool option 5 522

Country code 02

Country Group US

Country MX

50PA4900-UD

Only for training and service purposes

- 12 -

BLOCK DIAGRAM

Only for training and service purposes

- 13 -

EXPLODED VIEW

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

305

301

300

200

302

580

207

208

202

303

209

203

304

204

205

310

206

201

601

520

540

501

A34

A33

A32

A31

Touch

Home

A12

400

Only for training and service purposes

240

- 14 -

590

120

A10

LV1

900

910

Full SCART

LGE Internal Use Only

JK100

PSC008-02

SHIELD

AV_DET

COM_GND

SYNC_IN

SYNC_OUT

SYNC_GND2

SYNC_GND1

RGB_IO

R_OUT

RGB_GND

R_GND

D2B_OUT

G_OUT

D2B_IN

G_GND

B_OUT

AUDIO_L_IN

B_GND

AUDIO_GND

AUDIO_L_OUT

AUDIO_R_IN

AUDIO_R_OUT

+3.3V

R106 75

R108 75

R107 75

R104 10K EU

R105 1K EU

SC1_R+/COMP1_Pr+

SC1_G+/COMP1_Y+

SC1_B+/COMP1_Pb+

AV/SC1_DET

R115

470K

R116

470K

+5V

MULTI

R135

REC_8

R136

330

R139

2K EU

Q103-*1

Q103

ISA1530AC1 EU

D112-*1 MMBD6100

R138

2K EU

R137

2K EU

C112 10uF 16V

R140

2K EU

MULTI

R141

220

R142

390

READY

D112

C113 10uF

16V

+3.3V_ST

MMBT3904(NXP)

KDS184

R144

470

Q104

R143 180

MMBT3904(NXP)

Q107

C114 27pF

50V

R145

6.8K EU

C115 27pF

50V

EU R189 10K

SCART1_Lout

SCART1_MUTE

R146 18K

R147 10K

MMBT3904(NXP)

R149 15K EU

R148 15K

Q106

10uF

12K

R160

C116

16V

R154

5.6K

R152

6.8K EU

C117

0.1uF 16V

READY

DTV/MNT_VOUT

MMBT3904(NXP)

Q105

12K

R159

OUT1

IN1-

IN1+

VEE

MMBT3906(NXP)

R129 0 EU

C106 100uF

16V EU

R123

33 EU

R121 10K

R124

10K

R122

R125

C109 27pF

50V

C110

1000pF

50V

READY

R126 12K

R127 12K

C107

5600pF

50V

C108

5600pF

50V

C111 220pF

50V

R117

75 EU

R113

R118

470K

1/1 6W

R119

R114

R120

10K

2.7K EU

C102

1000pF

50V

READY

C103

1000pF

50V

READY

SC1_SOG_IN

AV/SC1_CVBS_IN

SC1_VOUT

SC1_FB

SC1_ID

AV/SC1_L_IN

AV/SC1_R_IN

Q100

MMBT3904(NXP)

R134 100 1/4W EU

Q101

DTV_R_OUT

Q102

MMBT3904(NXP)

L103

120-ohm

EU 1K

R158

R157

IC101

AZ4580MTR-E1

R155

P_17V

PDP GP4 LM1 EAX64280503

SC_RE1

SC_RE2

7.5K R156

EU 3K

P_17V

VCC

OUT2

IN2-

IN2+

5.6K R153

SCART1_Rout

CI SLOT

BUF2_FE_TS_DATA[0-7]

/CI_CD1

CI_TS_DATA[4] CI_TS_DATA[5] CI_TS_DATA[6] CI_TS_DATA[7]

CI_IORD CI_IOWR

BUF2_FE_TS_SYN

BUF2_FE_TS_DATA[0] BUF2_FE_TS_DATA[1] BUF2_FE_TS_DATA[2] BUF2_FE_TS_DATA[3]

BUF2_FE_TS_DATA[4] BUF2_FE_TS_DATA[5] BUF2_FE_TS_DATA[6]

BUF2_FE_TS_DATA[0-7]

BUF2_FE_TS_DATA[7]

PCM_RST

/PCM_WAIT

REG CI_TS_CLK CI_TS_VAL

CI_TS_SYNC

CI_TS_DATA[0] CI_TS_DATA[1] CI_TS_DATA[2] CI_TS_DATA[3]

R150 10K EU

+5V

/CI_CD2

+5V

R151 10K

R102

100 EU

AR100 33

R100 R101

AR101 33

AR102 33

R103 100 EU

+3.3V_CI

R165

TC74LCX244FT

10K

AR105

AR106 33

AR107 33

IC100

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

+3.3V_CI

VCC

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

/PCM_OE /PCM_WE /PCM_IORD /PCM_IOWR

PCM_A[12] PCM_A[13] PCM_A[14] /PCM_REG

PCM_A[8] PCM_A[9]CI_ADDR[9] PCM_A[10] PCM_A[11]

C105

0.1uF 16V

CI_ADDR[0] PCM_A[7] CI_ADDR[1] PCM_A[6] CI_ADDR[2]

PCM_A[5]

CI_ADDR[3] PCM_A[4]

BUF2_FE_TS_DATA[0-7]

AR108

33 EU

BUF2_FE_TS_DATA[0] BUF2_FE_TS_DATA[1] BUF2_FE_TS_DATA[2] BUF2_FE_TS_DATA[3]

BUF2_FE_TS_DATA[4] BUF2_FE_TS_DATA[5] BUF1_FE_TS_DATA[5] BUF2_FE_TS_DATA[6] BUF2_FE_TS_DATA[7]

BUF1_FE_TS_SYN

BUF1_FE_TS_VAL_ERR

BUF1_FE_TS_CLK

CI POWER ENABLE CONTROL

PCM_5V_CTL

BUF1_FE_TS_DATA[0]

BUF1_FE_TS_DATA[1]

BUF1_FE_TS_DATA[2]

BUF1_FE_TS_DATA[3]

AR109

33 EU

BUF1_FE_TS_DATA[4]

BUF1_FE_TS_DATA[6] BUF1_FE_TS_DATA[7]

AR110

+5V

R184 10K READY

BUF2_FE_TS_SYN BUF2_FE_TS_VAL_ERR BUF2_FE_TS_CLK

1/1 6W

R181 10K EU

BUF1_FE_TS_DATA[0-7]

Q114 RSR025P03 EU

R187 10K EU

R188 2K EU

Q113 MMBT3904(NXP) EU

BUF1_FE_TS_DATA[0-7]

L100

120-ohm

C131

0.1uF

16V READY

AO3407A

MULTI

Q114-*1

+5V_CI_ON

C104

0.1uF 16V EU

R198 10K READY

3.3V_CI

+3.3V

C136

0.1uF 16V READY

L101

120-ohm

+3.3V_CI

C137

0.1uF 16V EU

CI_OE

+5V_CI_ON

C100

C101

22uF

0.1uF

10V

16V

JK102

10067972-000LF

35 36

R111 10K EU

R112 0

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

65 66 67 68

READY

R109 10K

R110 0 READY

3 4 5 6 7 8

9 10 11 12 13 14 15 16 17

R128 0

READY

19 20 21 22 23 24 25 2660 2761 2862 2963 3064 31 32 33 34

G1G2

AR103

R130 33EU

1/16W

R131 33EU

R132 100

AR104

PCM_D[3] PCM_D[4] PCM_D[5] PCM_D[6] PCM_D[7]

PCM_D[0] PCM_D[1] PCM_D[2]

CI_ADDR[10] CI_ADDR[11] CI_ADDR[9] CI_ADDR[8] CI_ADDR[13] CI_ADDR[14]

CI_ADDR[12] CI_ADDR[7]

CI_ADDR[6] CI_ADDR[5]

CI_ADDR[4] CI_ADDR[3] CI_ADDR[2] CI_ADDR[1] CI_ADDR[0]

PCM_D[0-7]

R133 10K EU

/PCM_CE

CI_OE

CI_WE /PCM_IRQA

BUF2_FE_TS_VAL_ERR BUF2_FE_TS_CLK

CI_ADDR[0-14]

PCM_D[0-7]

CI_WE CI_IORD CI_IOWR

CI_ADDR[12] CI_ADDR[13] CI_ADDR[14]

CI_ADDR[8]

CI_ADDR[10] CI_ADDR[11]

CI_DET

PCM_A[0]

CI_ADDR[7]

PCM_A[1]

CI_ADDR[6]

PCM_A[2]

CI_ADDR[5]

PCM_A[3]

CI_ADDR[4]

REG

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

GP4_S7LR

SCART,CI Slot

2011-10-20

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