LG LA61B, 37LB1D-UB, 37LB1DA-UB Service Manual

LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LA61B

MODEL : 37LB1D-UB / 37LB1DA-UB

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

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CONTENTS

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

PRODUCT SAFETY ..................................................................................3

SPECIFICATION........................................................................................6

ADJUSTMENT INSTRUCTION................................................................11

SVC REMOCON ......................................................................................17

VIDEO TROUBLE SHOOTING&BLOCK DIAGRAM ..............................18

AUDIO TROUBLE SHOOTING&BLOCK DIAGRAM..............................41

EXPLODED VIEW .................................................................................. 53

EXPLODED VIEW PARTS LIST..............................................................54

REPLACEMENT PARTS LIST ............................................................... 55

SVC. SHEET ...............................................................................................

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SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. 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 damaged by accidental shorts of the circuitry 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 1W), keep the resistor 10mm 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 1MΩ and 5.2MΩ. 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.

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 1.5K/10watt resistor in parallel with a 0.15uF 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 voltage measured must not exceed 0.75 volt RMS which is corresponds to

0.5mA. 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

IMPORTANT SAFETY NOTICE

0.15uF

To Instrument's exposed METALLIC PARTS

AC Volt-meter

Good Earth Ground such as WATER PIPE, CONDUIT etc.

1.5 Kohm/10W

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CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the

SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the

following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.

General Servicing Precautions

1. Always unplug the receiver AC power cord from the AC power source before; a. Removing or reinstalling any component, circuit board

module or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug or

other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic

capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard.

2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc".

3. Do not spray chemicals on or near this receiver or any of its assemblies.

4. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength) CAUTION: This is a flammable mixture. Unless specified otherwise in this service manual, lubrication of contacts in not required.

5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped.

6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.

7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last.

8. Use with this receiver only the test fixtures specified in this

service manual.

CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the

unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static type solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500

F to 600 F.

2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thoroughly clean the surfaces to be soldered. Use a mall wirebristle (0.5 inch, or 1.25cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering technique a. Allow the soldering iron tip to reach normal temperature.

(500

F to 600 F) b. Heat the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suction-

type solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuitboard printed foil.

6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature

(500

F to 600 F)

b. First, hold the soldering iron tip and solder the strand against

the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil.

d. Closely inspect the solder area and remove any excess or

splashed solder with a small wire-bristle brush.

SERVICING PRECAUTIONS

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IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.

2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.

Replacement

1. Carefully insert the replacement IC in the circuit board.

2. Carefully bend each IC lead against the circuit foil pad and solder it.

3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete Transistor Removal/Replacement

1. Remove the defective transistor by clipping its leads as close as possible to the component body.

2. Bend into a "U" shape the end of each of three leads remaining on the circuit board.

3. Bend into a "U" shape the replacement transistor leads.

4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection.

Power Output, Transistor Device Removal/Replacement

1. Heat and remove all solder from around the transistor leads.

2. Remove the heat sink mounting screw (if so equipped).

3. Carefully remove the transistor from the heat sink of the circuit board.

4. Insert new transistor in the circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heat sink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as possible to diode body.

2. Bend the two remaining leads perpendicular y to the circuit board.

3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder.

Fuse and Conventional Resistor Removal/Replacement

1. Clip each fuse or resistor lead at top of the circuit board hollow stake.

2. Securely crimp the leads of replacement component around notch at stake top.

3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).

1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).

2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire.

At Other Connections

Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION: Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges.

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SPECIFICATION

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

4.General Specification(TV)

No Item Specification Remark

1. Receiving System ATSC/64 & 256 QAM/ 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 ~ 260V 50/60Hz

4. Market NORTH AMERICA

5. Screen Size 37 inch Wide(1366 x 768)

6. Aspect Ratio 16:9

7. Tuning System FS

8. LCD Module LC370WX1-SL01 WXGA SPEC UP

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

2) Humidity : ~ 80 %

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

2) Humidity : 0 ~ 90 %

1. Application range

1.1 This spec sheet is applied all of the 37" LCD TV with LA51D chassis.

1.2 Not included spec and each product spec in this spec sheet apply correspondingly to the following each country standard and requirement of Buyer

2. Specification

Each part is tested as below without special appointment.

2.1 Temperature : 20±5°C

2.2 Relative Humidity : 65±10%

2.3 Power Voltage : Standard input voltage

(100~240V@50/60Hz)

* Standard Voltage of each product is marked by models

2.4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM.

2.5 The receiver must be operated for about 20 minutes prior to the adjustment.

3. Test method

3.1 Performance : LGE TV test method followed

3.2 Demanded other specification Safety : UL, CSA, IEC specification EMC : FCC, ICES, IEC specification

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5. Chroma (SET With 45% Filter)

No Item Min Typ Max Unit Remark

1. White peak brightness 450 550 cd/m

37LB1D-UB

(Center 1-point / Full White Pattern)

2. White average brightness cd/m

N/A

3. Brightness uniformity 80 % Full white

4. Color coordinate RED X Typ. 0.638 Typ. Y -0.03 0.340 +0.03

GREEN X 0.279

Y 0.611

BLUE X 0.146

Y 0.062

WHITE X 0.272

Y 0.278

5. Color coordinate uniformity N/A

6. Contrast ratio 600:1 800:1 W/O AI

1200:1 1600:1 With AI

7. Color Temperature Standard 8,300 9,300 10,300 <Test Condition>

Cool 11,000 12,000 13,000 HDMI Input, Warm 5,500 6,500 7,500 85% Full white pattern

8. Color Distortion, DG 10.0 %

9. Color Distortion, DP 10.0 deg

10. Color S/N, AM/FM 43.0 dB

11. Color Killer Sensitivity -80 dBm

• Peak & average Brightness & Contrast measure

standard specification

1. White Peak brightness measure specification

1) In non-impressed condition , measure peak brightness displayable as much as possible PDP module.

2) Measuring instrument : CA-100 or a sort of Color Analyzer.

3) Pattern Generator : VG-828 or a sort of digital pattern generator (displayable Full White & 1/25 White Window pattern)

4) Measure condition

- Test pattern : in center, 1/5(H) x 1/5(V) of Window Pattern (white pattern in non-impressed condition)

- SET condition : Contrast & Brightness Level 100%

- Environment condition : Dark room in the non outside light

5) Measurement

- Do heat-run PDP module at 30minutes in normal temperature (25°…) by using full white pattern of 15% signal level(38 gray level).

- Impress test pattern signal in 1/5(H) * 1/5(V) White Window of 100%(255Gray Level)

- Measure 3 times brightness of central white window, and mark peak brightness in max brightness degree

- measure the same condition in video signal /RGB signal.

2. Average Brightness measure specification

1) Impress 100%(255Gray Level) full white pattern at the same peak brightness measurement.

2) Measure average brightness in 9 points.

3. Contrast ratio measure specification

1) Test display signal : 30*30 dots White Window signal &

all Black Raster signal

2) Dark room measure condition : : Using touch type Color

analyzer CA-100 Dark room in the non outside light

3) Bright room measure condition : In bright room of

150Lx illumination in the panel surface, locate a source of light on the above 45¢™of the panel surface.

4) Measure method

- In standard test condition, impress 30*30 dots White Window Pattern signal . Measure center peak brightness degree Lw of white window

- Impress black Raster signal as contrast ratio measurement signal. Measure black brightness degree Lb of PDP central Calculate the following numerical formula .

Contrast ratio = Lw / Lb

If it does not use Prior measurement, use generally simple

test measurement.

The Correct measure specification is followed by

IEC61988-2/CD, JAPAN EIAJ-2710

1 2 3

4 5 6

7 8 9

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6. External Input Format 6-1. Component Video Input (Y, CB/PB

, CR/PR)

6-2. RGB PC INPUT Mode Table

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed

PC DDC

1. 640 x 350 31.468 70.09 25.17 EGA O

2. 720 x 400 31.469 70.08 28.32 DOS O

3. 640 x 480 31.469 59.94 25.17 VESA(VGA) O

4. 640 x 480 37.861 72.80 31.50 VESA(VGA) O

5. 640 x 480 37.500 75.00 31.50 VESA(VGA) O

6. 800 x 600 35.156 56.25 36.00 VESA(SVGA) O

7. 800 x 600 37.879 60.31 40.00 VESA(SVGA) O

8. 800 x 600 48.077 72.18 50.00 VESA(SVGA) O

9. 800 x 600 46.875 75.00 49.50 VESA(SVGA) O

10. 1024 x 768 48.363 60.00 65.00 VESA(XGA) O

11. 1024 x 768 56.476 70.06 75.00 VESA(XGA) O

12. 1024 x 768 60.023 75.02 78.75 VESA(XGA) O

13. 1280 x 768 47.776 59.870 79.5 CVT(WXGA) X

14. 1360 x 768 47.720 59.799 84.750 CVT(WXGA) O DTV

15. 720 x 480 31.47 60 SDTV 480P

16. 720 x 480 31.47 59.94 SDTV 480P

17. 1280 x 720 45.00 60.00 HDTV 720P

18. 1280 x 720 44.96 59.94 HDTV 720P

19. 1920 x 1080 33.75 60.00 HDTV 1080I

20. 1920 x 1080 33.72 59.94 HDTV 1080I

No Resolution H-freq(kHz) V-freq.(Hz) Proposed

1. 720 x 480 15.73 60 SDTV ,DVD 480I

2. 720 x 480 15.73 59.94 SDTV ,DVD 480I

3. 720 x 480 31.47 60 SDTV 480P

4. 720 x 480 31.47 59.94 SDTV 480P

5. 1280 x 720 45.00 60.00 HDTV 720P

6. 1280 x 720 44.96 59.94 HDTV 720P

7. 1920 x 1080 33.75 60.00 HDTV 1080I

8. 1920 x 1080 33.72 59.94 HDTV 1080I

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6-3. HDMI Input (PC/DTV)

6-4. Power

6-5. LED Control

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed

PC DDC

1. 640 x 480 31.469 59.94 25.17 VESA(VGA) O

2. 640 x 480 37.861 72.80 31.50 VESA(VGA) O

3. 640 x 480 37.500 75.00 31.50 VESA(VGA) O

4. 800 x 600 35.156 56.25 36.00 VESA(SVGA) O

5. 800 x 600 37.879 60.31 40.00 VESA(SVGA) O

6. 800 x 600 48.077 72.18 50.00 VESA(SVGA) O

7. 800 x 600 46.875 75.00 49.50 VESA(SVGA) O

8. 1024 x 768 48.363 60.00 65.00 VESA(XGA) O

9. 1024 x 768 56.476 70.06 75.00 VESA(XGA) O

10. 1024 x 768 60.023 75.02 78.75 VESA(XGA) O

11. 1280 x 768 47.776 59.870 79.5 CVT(WXGA) X

12. 1360 x 768 47.720 59.799 84.750 CVT(WXGA) O DTV

13. 720 x 480 31.47 60 SDTV 480P

14. 720 x 480 31.47 59.94 SDTV 480P

15. 1280 x 720 45.00 60.00 HDTV 720P

16. 1280 x 720 44.96 59.94 HDTV 720P

17. 1920 x 1080 33.75 60.00 HDTV 1080I

18. 1920 x 1080 33.72 59.94 HDTV 1080I

No Item Min Typ Max Unit Remark

1. Power On/Off 10000 Time

2. DC Voltage Sustain Voltage(Vs) 180 X 200 X V N/A Address Voltage(Va) 55 X 75 X V Logic Voltage(Vcc) 4.85 5.1 5.35 V MODULE Control Vcc Stand-by 5V 4.75 5.0 5.25 V VSC Vcc Micom B+ 4.75 5.0 5.25 V Tuner 5V 4.75 5.0 5.25 V Tuner 33V 29.0 31.0 33.0 V VSC Vcc 12V 11.4 12.0 12.6 V

6V 5.5 6.0 6.5 V

3.4V 3.25 3.4 3.55 V

POD Fan Always 7.8 8.0 8.2 V POD fan is not controlled.

DCR only.

3. AC Power Shut Down Voltage 90 264 V Wide Range Power Board

LED Working state & Error LED Color Remark

Power Off Off

(LED Display) ST-BY Red

Power On White

Power On Sequence White blink Blink when press Power Key

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6-6. Audio Output

(1) Speaker On

7. Customer Menu Setup (Shipment Condition)

(2) Speaker Off

Output terminal

Monitor Out SPDIF output

Input Mode TV/DTV TV TV/DTV AV AV AV Component Component Component SPDIF SPDIF SPDIF

Output terminal

Monitor Out SPDIF output

Input Mode TV/DTV TV TV/DTV AV AV AV Component Component Component SPDIF SPDIF SPDIF

No Item Remark

1. Input Mode TV02CH

2. Volume Level 30

3. Mute Off

4. Aspect Ratio 16:9

5. Video EZ Picture Daylight Contrast 100 Brightness 40 Color 70 Sharpness 70 Tint 0 Color-temperature Cool

6. Audio Audio Language Off EZ SoundRite Off EZ Sound Normal Balance 0 Treble 50 Bass 50 Front Surround Off BBE Off TV Speaker On

7. Time Auto clock On Manual Clock Off Off Timer Off On Timer Off Sleep Timer Off Auto Off Off

No Item Remark

8. Option Advanced Timeshift Mode : On/ Cinema 3:2 Mode: Off/

Low power : off/ Aspect Ratio 16:9 Cinema 3:2 mode Off Caption Off Caption/Text CC1 Caption Option Off Language English ISM Method Normal Front Display Normal Auto Demo Off

9. Lock Lock System Off Set password On(Default : 0000 ) Block channel None Movie Rating Blocking Off TV Rating children Blocking Off Tv Rating general Blocking Off Input Block Off

10. Channel Memory RF: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30,51, 63CATV : 15, 16, 17

8. Mechanical specification

No, Item Content Remark

1 Product Dimenson Width(W) Length(D) Height(H)

Before Packing 1046mm 296mm 690mm With Stand After Packing 1152mm 378mm 815mm

2 Product Weight Only SET 31.6Kg With Stand

With Box 36.5kg

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ADJUSTMENT INSTRUCTION

1. Application Object

These instructions are applied to all of the PDP TV, PA61A.

2. Notes

(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 equipment. (2) Adjustments must be done in the correct order. (3) The adjustments must be performed in the circumstance of

25±5°C of temperature and 65±10% of relative humidity if

there is no specific designation. (4) The input voltage of the receiver be must kept 110V, 60Hz

when adjusting. (5) The receiver must be operational for about 15 minutes

prior to the adjustments.

O Preliminary action is applied to the test for afterimage

discharge detection, and 100% FULL WHITE PATTERN must be operated automatically.

O Test for afterimage discharge detection

1) After pressing Power Only key(only operating by pressing Power Only key), Full Test Pattern(2 min 30sec) --> Full Black Pattern(30sec) --> After this state, Full White Pattern is displayed. (but you must preset the program for Full White State when you press the Main Power Off/On)

2) Pattern Mode is deselected by pressing CH +/-, Exit Key.

[ Set is activated HEAT-RUN without signal generator in this

mode.

3. EPLD Download

(1) Test Equipment: PC, Jig for download (2) Connect the power of VSC B/D. (3) Execute download program(iMPACK) of PC. (4) After executing the hot key on the Programmer, click icon (5) End after confirming

4. Gemstar VBI Micom Download

4-1. Preparation for Adjustment

(1) As shown below, connect the MPLAB ICD2 equipment, PC

and Digital Connector.

(2) Turn on the MPLAB ICD2 POWER Supply.

(3) After turn on the PC and MONITOR, select the ‘MPLAB

IDE’ from the screen.

4-2. Adjustment Sequence

(1) When the program is executed, select the MPLAB ICD2

from Programmer -> Select Programmer .

If you turn on a still screen more than 20 minutes (Especially Digital pattern(13 CH), Cross Hatch Pattern), an afterimage may occur in the black level part of the screen.

VSC

B/D

+13V

GND Data

Test Pattern 2min 30sec

Test Pattern 30sec

Connect the RS-232 or USB Cable

Connect the MPLAB ICD2 and connector of Digital Board

- 12 -

(2) Select "Configure -> Select Device".

(3) When the "Select Device" window appears, select the

PIC18F1220 from "Device" and press OK.

(4) Select "Programmer -> Connect".

When connected with the Micom, the display message on the Output window appears as below.

(5) Select "File -> Import", select the Work HEX file and open.

(6) Select "Programmer -> Program".

(7) Download is executed and about 5 seconds later, the

"Programming succeeded" message is displayed on the Output window and the Download process is ended.

(8) The execution of process (6) is convenient when using the

short-cut icon.

5. POD Certificate Download

5-1. Preparation for Adjustment

(1) Connect the MEMORY JIG and PC. (2) Turn on the JIG MAIN POWER SWITCH. (3) After turn on the PC and MONITOR, execute the

‘Certificate Downloader v1.4’ from the screen.

5-2. Adjustment Sequence

(1) After open the ‘Certificate Downloader v1.4’, enter

Connection set and set the as same below. The port settings are determined by each PC's setup.

(2) Select ‘Connection’ and SET connected to RS-232C. (3) After clicking "Enter", confirm that "Enter Password:"

appears.

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(4) Click the "OpenFile - Download" button from CP Data

Download, ‘select the Private Key’ appears and click ENTER.

(5) After clicking ENTER, the ‘opens Private key' window

appears and select the Private key applied to the SET. The Private Key file name is on the Label of the Digital Board.

(6) When the Dialog window appears, click OK and the write

work will begin.

(7) When completed, click ‘CP Data Download: OK’

[ When ‘CP Data Download: OK’ does not appear, certificate

has not Download correctly. SET is rebooted and certificate Download work must be repeated.

6. Gemstar Operation Confirmation

6-1. Required Test Equipment

(1) PC with Factory Test Program (2) VBI Inserter (Norpak TES3) - Guide Data Discharge

Equipment

[ In case of without the VBI Inserter(TES3), a VCR may be

used.

6-2. Preparation for Adjustments

(1) In case of with VBI Inserter(TES3): Signal uses Cable input

and set as below.

(2) In case of without VBI Inserter(TES3): VCR uses Cable

input and set as below.

[ Factory Test S/W must be set to "GlinkTo PC Card" ON.

6-3. Adjustment Confirmation Work

(1) Turn on the TV and run Factory Test Program of PC.

[ Program only needs to run once, regardless of set quantity.

(2) Enter the EZ adjust menu by pressing Adjust on the

Service Remote Control (S R/C). (3) Go to number 1 Gemstar and press Enter. (4) TV set screen will appear as shown.

(5) Confrim that VBI Test and Serial Test PASS from the

screen.

RS-232C

Input Signal

7. Cable Operation Confirmation

(1) Confirm that the Cable Card is inserted in the slot. (2) Enter the EZ adjust menu by pressing the Adjust key on

the Service Remote Control (S R/C).

(3) Go to number 2 Cable Check and press the Right key (

G ) .

(4) Confirm items below.

8. POWER PCB Assy Voltage Adjustment

(Va, Vs Voltage Adjustment)

8-1. Test Equipment :D.M.M 1EA 8-2. Connection Diagram for Measuring

Refer to Fig 1.

9. EDID(The Extended Display

Identification Data)/DDC (Display Data Channel) Download

This is the function that enables “Plug and Play".

9-1. HDMI EDID Data Input

(1) Required Test Equipment

1) PC, Jig for adjusting DDC. (PC serial to D-sub Connection equipment)

2) S/W for writing DDC(EDID data write & read)

3) D-Sub cable

4) Jig for HDMI Cable connection

(2) Preparation for Adjustments &

Setting of Device

1) Set devices as below and turn on the PC and JIG.

2) Open S/W for writing DDC (EDID data write & read). (operated in DOS mode)

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Name

Descrambler

Check

CableCARD

OOB Path

FDC_SNR

Video Signal

Normal

CableCARD

is inserted.

OK(Lock)

OK(20dB above)

Normal Screen

Defective

Not OK

CableCARD

is removed.

Not OK(Unlock)

Not OK(20dB under)

Black Screen

(No Picture)

Each PCB Assy must be checked by Check JIG Set before assembly. (Especially, be careful Power PCB Assy which can cause Damage to the PDP Module.)

<Fig. 1-1> Connection Diagram of Power Adjustment for

Measuring (Power Board): 50”

<Fig. 2>

<Fig. 1-2> Connection Diagram of Power Adjustment for

Measuring (Power Board): 60”

GND

DMM

P805

GND

P804

P800

VR95 VR90

P803

P802

PDP TV SET

(or Digital Board)

CN1

10. ADC-Set Adjustment

10-1. Synopsis

ADC-Set adjustment to set the black level and the Gain to optimum.

10-2. Test Equipment

Service R/C, 801GF(802B, 802F, 802R) or MSPG925FA Pattern Generator (720P The Horizontal 100% Color Bar Pattern output will be possible and the output level will accurately have to be revised with 0.7±0.1Vp-p)

10-3. Adjustment

(1) ADC 480i Component1 Adjustment

Check the connection Component1 to the Test Equipment

(1) Select Component1 as the input with 100% Horizontal

Color Bar Pattern(HozTV31Bar) in 480i Mode and select ‘Normal’ in screen.

(2) After receiving signal for at least 1 second, press the

ADJ Key on the Service R/C to enter the ‘Ez - Adjust’ and select the ‘4. ADC 480i Comp1’. Pressing the Enter Key to adjust with automatic movement.

(3) When the adjustment is over, 'ADC Component1

Success’ is displayed.

(4) If the adjustment has errors, 'ADC Configuration Error’

is displayed. And error massage(‘Component Not Connection’ or ‘Change Format to 480i’ or ‘Check Pattern of device’ ) is displayed for 1 second.

(2) ADC 1080i Component2/RGB Adjustment

Check the connection Component2, RGB to the Test Equipment

(1) Select Component2 as the input with 100% Horizontal

Color Bar Pattern(HozTV31Bar) in 1080i Mode and select ‘Normal’ in screen.

(2) After receiving signal for at least 1 second, press the

ADJ Key on the Service R/C to enter the ‘Ez - Adjust’ and select the ‘5. ADC 480p Comp2/RGB’. Pressing the Enter Key to adjust with automatic movement.

(3) When the adjustment is over, 'ADC Component2

Success’ is displayed. If the adjustment has errors, 'ADC Configuration Error’ is displayed.

(4) After the Component2 adjustment is over, convert the

RGB-DTV Mode and display Pattern.

When the adjustment is over, 'ADC RGB_DTV Success’ is displayed.

(5) Readjust after confirming the case Pattern or

adjustment condition where the adjustment errors. Error massage is ‘Component Not Connection’ or ‘Change Format to 480i’ or ‘Check Pattern of device’.

(6) After adjustment is complete, exit the adjustment mode

by pressing the ADJ KEY.

11. Adjustment of White Balance

11-1. Connection Diagram of Equipment

for Measuring (Automatic Adjustment)

[ RS-232C Command (Automatic Adjustment)

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<Fig. 4> Connection Diagram of Automatic Adjustment

R Gain G Gain B Gain

R Cut G Cut B Cut

Jg Jh

Cool

Ja Jb Jc

Mid

RS-232C COMMAND

[CMD ID DATA]

CENTER

(DEFAULT)

Jd Je

00 00 00

255 255 255 127 127 127

Warm

Min Max

184 187 192

64 64 64

Cool

161 183 192

64 64 64

Mid

192 159

95 64 64 64

Warm

<Fig. 3> Adjustment Pattern : 480i/1080i 60Hz HozTV31

Bar Pattern

Full White Pattern

COLOR

ANALYZER

TYPE; CA-100

Digital RGB

PDP MONITOR

MSPG-925FA

11-2. Adjustment of White Balance

Operate the Zero-calibration of the CA-210, then attach sensor to PDP module surface when you adjust.

Manual adjustment is also possible by the following sequence.

(1) HEAT RUN at least 30 minutes by pressing the Power only

Key on the Service Remote Control and adjust.

(2) After attaching sensor to center of screen, select ‘White-

Balance’ of ‘Ez - Adjust’ by pressing the ADJ KEY on the Service R/C. Then enter adjustment mode by pressing the Right KEY (

). This time white pattern is displayed.

(3) Adjust the Hight Light using R Gain/G Gain(Cool).

Adjust the Hight Light using G Gain/R Gain(Medium). Adjust the Hight Light using G Gain/B Gain(Warm). (R Gain: 192, B Gain 192, R-Cut/G-Cut/B-Cut: 64 Fix.)

(4) Adjust using Volume +/- KEY. (5) After adjustment is complete, exit the adjustment mode by

pressing the ADJ KEY.

High Level: 216gray

[Cool]

X; 0.278±0.015 Y; 0.279±0.015 Color temperature: 11000°K±1000°K dUV: -3dUV

[Medium]

X; 0.287±0.015 Y; 0.289±0.015 Color temperature: 9300°K±1000°K dUV: -3dUV

[Warm]

X; 0.314±0.015 Y; 0.318±0.015 Color temperature: 6500°K±1000°K dUV: -3dUV

12. Video(uPD)-Set

Adjustment for reduce color difference Main/Sub screen of RF or Video signal.

12-1. Adjustment

(1) Connection the Video Signal Generator(Master) to the TV

AV Input terminal. After input pattern(Model: 201(NTSC-M), Pattern: 32(100% color Bar), pressing the ‘Rev’ button and appear as below figure

(2) After receive signal, confirm the signal receiving.

And Enter the ‘EZ-ADJUST’ by pressing the ADJ Key on the Service R/C. Select ‘5. Video(UPD)-Set’ and enter the adjustment mode by pressing the right key (

(3) When enter the adjustment mode, displayed the TV 2CH

SPLIT Screen automatic at picture and appear as below figure.

(4) When the automatic adjustment is over, 'RF Configuration

Success’ is displayed. If the adjustment has errors, 'Video Configuration Error’ is displayed.

(5) After the RF signal automatic adjustment is over, convert

the Video Mode as below figure and adjust with automatic movement the Video Mode. When the automatic adjustment is over, 'Video Configuration Success’ is displayed. If the adjustment has errors, 'Video Configuration Error’ is displayed.

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- 17 -

SVC REMOCON

1 POWER 2 POWER ON 3 MUTE

4 P-CHECK 5 S-CHECK 6 ARC 7 CAPTION 8 TXT 9 TV/AV 10 TURBO SOUND 11 TURBO PICTURE

12 IN-START

13 ADJ 14 MPX 15 EXIT 16 APC(PSM) 17 ASC(SSM) 18 MULTIMIDIA 19 FRONT-AV 20 CH 21 VOL 22 ENTER

23 PIP CH-(OP1)

24 PIP CH+(OP2)

25 PIP SWAP(OP3)

26 PIP INPUT(OP4)

27 EYE 28 MENU

29 IN-STOP 30 STILL

31 TIME

32 SIZE

33 MULTI PIP

34 POSITION

35 MODE 36 PIP 37 TILT 38 0~9

To turn the TV on or off To turn the TV on automatically if the power is supplied to the TV. (Use the POWER key to deactivate): It should be deactivated when delivered. To activate the mute function. To check TV screen image easily. To check TV screen sound easily To select size of the main screen (Normal, Spectacle, Wide or Zoom) Switch to closed caption broadcasting To toggle on/off the teletext mode To select an external input for the TV screen To start turbo sound To start turbo picture To enter adjustment mode when manufacturing the TV sets. To adjust the screen voltage (automatic): In-start

mute Adjust AV(Enter into W/B adjustment mode) W/B adjustment (automatic): After adjusting the screen W/B adjustment Exit two times (Adjustment completed) To enter into the adjustment mode. To adjust horizontal line and sub-brightness. To select the multiple sound mode (Mono, Stereo or Foreign language) To release the adjustment mode To easily adjust the screen according to surrounding brightness To easily adjust sound according to the program type To check component input To check the front AV To move channel up/down or to select a function displayed on the screen. To adjust the volume or accurately control a specific function. To set a specific function or complete setting. To move the channel down in the PIP screen. To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main and sub screens To use as a yellow key in the teletext mode To select the input status in the PIP screen To use as a blue key in the teletext mode To set a function that will automatically adjust screen status to match the surrounding brightness so natural color can be displayed. To select the functions such as video, voice, function or channel. To set the delivery condition status after manufacturing the TV set. To halt the main screen in the normal mode, or the sub screen at the PIP screen. Used as a hold key in the teletext mode (Page updating is stopped.) Displays the teletext time in the normal mode Enables to select the sub code in the teletext mode Used as the size key in the PIP screen in the normal mode Used as the size key in the teletext mode Used as the index key in the teletext mode (Top index will be displayed if it is the top text.) To select the position of the PIP screen in the normal mode Used as the update key in the teletext mode (Text will be displayed if the current page is updated.) Used as Mode in the teletext mode To select the simultaneous screen To adjust screen tilt To manually select the channel.

Shortcut keys Shortcut keys Shortcut keys

Use the AV key to enter the screen W/B adjustment mode.

Shortcut keys Shortcut keys

Shortcut keys