LG 32LN548C-ZA, 32LN549C-ZA, 32LP360H-ZA, 32LP361H-ZA, 37LN548C-ZA Service manual & schematics

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North/Latin America Europe/Africa Asia/Oceania

Internal Use Only

http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com

LED TV SERVICE MANUAL

CHASSIS : LD3AC

MODEL: 42LP360H/361H 42LN548C/549C

42LP360H/361H-ZA 42LN548C/549C-ZA

CAUTION

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

P/NO : MFL67800102 (1302-REV00)

Printed in Korea

Page 2

CONTENTS

CONTENTS 2
SAFETY PRECAUTIONS
SERVICING PRECAUTIONS 4
SPECIFICATION
ADJUSTMENT INSTRUCTION 10
TROUBLE SHOOTING GUIDE 16
BLOCK DIAGRAM 21
EXPLODED VIEW 22
SCHEMATIC CIRCUIT DIAGRAM
Page 3

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by A 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 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 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 iacks, etc.

If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 MO and 5.2 MO

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.

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 0.5 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

When 25A is impressed between Earth and 2nd Ground for 1 second, Resistance must be less than 0.1 Ω *Base on Adjustment standard

Page 4

SERVICING PRECAUTIONS

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".
  • 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

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

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.

  • 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.
  • 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.
  • 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).
  • 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

  • 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.
  • 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 1.25 cm) 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, suctiontype solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuit board 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.

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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

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

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

Page 6

SPECIFICATION

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

1. Application range

This specification is applied to the LED TV used LD3AC 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.

DTV & Analog (Total 37 countries) DTV (MPEG2/4, DVB-T) :37 countries UK/Italy/Germany/France/Spain/Sweden/Finland/Netherlands/ Belgium/Luxemburg/ Greece/Denmark/Czech/ Austria /Hungary/Swiss/Croatia/TurkeyNorway/Slovenia/ Poland/Ukraine/Portugal/Ireland/Morocco/Latvia/Estonia/ Lithania/Rumania/Bulgaria/Russia/SlovakiaBosnia/Serbia/ Albania/Kumama/Dulgana/K DTV (MPEG2/4, DVB-T2): 8 countries UK/Denmark/Sweden/Finland/Norway/Ireland/Ukraine/ DTV (MPEG2/4, DVB-C): 11 countries Sweden/Finland/Austria/Swiss/Germany/Netherlands/Hunary/Slovenia/Norway/Denmark/Bulgaria ) PAL-BG 2) PAL-DK 2 Broadcasting system 3) PAI 1/1 4) SECAM L/L' - VHF. UHF 2) Analogue TV 3 Program coverage - VHF : F2 to F12 - UHF : E21 to E69 CAT\/ · S1 to S20 - HVPER · $21 to $47

4. Model General Specification

3. Test method

  • 1) Performance: LGE TV test method followed
  • 2) Demanded other specification
    • Safety : CE, IEC specification
Page 7
No. Item Specification Remarks
4 Receiving system Analog : Upper Heterodyne
Digital : COFDM, QAM
  • DVB-T
    • Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32
    • Modulation : Code Rate QPSK : 1/2, 2/3, 3/4, 5/6, 7/8 16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
  • DVB-T2
    • Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256
  • DVB-T2
    • Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256
  • Modulation : Code Rate
    • QPSK : 1/2, 2/5, 2/3, 3/4, 5/6
    • 16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
  • DVB-T2
    • Guard Interval(Bitrate_Mbit/s)
    • 1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256
    • Modulation : Code Rate
      • QPSK : 1/2, 2/5, 2/3, 3/4, 5/6
    • DVB-C
      • Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s
      • Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM
5 Scart Jack (1EA) PAL, SECAM Scart 1 Jack is Full scart and support RF-OUT(analog).
6 Component Input (1EA) Y/Cb/Cr
Y/Pb/Pr
Phone Jack type
Video only(Rear)
7 RGB Input RGB-PC Analog(D-SUB 15PIN)
8 HDMI Input (3EA) HDMI1-DTV/DVI
HDMI2-DTV
HDMI3-DTV
PC(HDMI version 1.3)
Support HDCP
The number of Input ports is different by model.
9 Audio Input (1EA) RGB/DVI/Component Audio RGB/DVI & Component Audio common port
10 SDPIF out (1EA) SPDIF out
11 External Speaker out (1EA) Stereo, 1W (8 Ω), Single-End 3P Phone Jack type
12 Earphone out (1EA) Antenna, AV, Component, RGB,
HDMI1, HDMI2, HDMI3
13 USB (1EA) EMF,
DivX HD,
For SVC (download)
JPEG, MP3, DivX HD
14 DVB DVB-T CI : UK, Finland, Denmark, Norway, Sweden, Russia,
Spain, Ireland, Luxemburg, Belgium, Netherland
CI+ : France(Canal+), Italy(DGTVi)
DVB-C CI : Switzerland, Austria, Slovenia, Hungary, Bulgaria
CI+ : Switzerland(UPC,Cablecom), Netherland(Ziggo),
Germany(KDG,CWB), Finland(labwise)
15 RS232C(1EA) Interactive mode support
Page 8

5. Video resolutions (2D) 5.1. Component Input (Y, CB/PB, CR/PR)

No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed
1 720*576 15.625 50.00 13.5 SDTV ,DVD 576I
2 720*480 15.73 60.00 13.5135 SDTV ,DVD 480I
3 720*480 15.73 59.94 13.50 SDTV ,DVD 480I
4 720*576 31.25 50.00 27.00 SDTV 576P
5 720*480 31.50 60.00 27.027 SDTV 480P
6 720*480 31.47 59.94 27.00 SDTV 480P
7 1280*720 37.50 50.00 74.25 HDTV 720P
8 1280*720 45.00 60.00 74.25 HDTV 720P
9 1280*720 44.96 59.94 74.176 HDTV 720P
10 1920*1080 28.125 50.00 74.25 HDTV 1080I
11 1920*1080 33.75 60.00 74.25 HDTV 1080I
12 1920*1080 33.72 59.94 74.176 HDTV 1080I
13 1920*1080 56.25 50.00 148.50 HDTV 1080P
14 1920*1080 67.50 60.00 148.50 HDTV 1080P
15 1920*1080 67.432 59.94 148.352 HDTV 1080P
16 1920*1080 27.00 24.00 74.25 HDTV 1080P
17 1920*1080 26.97 23.94 74.176 HDTV 1080P
18 1920*1080 33.75 30.00 74.25 HDTV 1080P
19 1920*1080 33.71 29.97 74.176 HDTV 1080P

5.2. RGB Input (PC) - HD Model

No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed DDC
1 640*480 31.469 59.94 25.17 VESA(VGA) 0
2 800*600 37.879 60.31 40.00 VESA(SVGA) 0
3 1024*768 48.363 60.00 65.00 VESA(XGA) 0
4 1152*864 54.348 60.053 80.00 VESA 0

5.3. RGB Input (PC) - FHD Model

No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed DDC
1 640*350 31.468 70.09 25.17 EGA Х
2 720*400 31.469 70.08 28.32 DOS 0
3 640*480 31.469 59.94 25.17 VESA(VGA) 0
4 800*600 37.879 60.31 40.00 VESA(SVGA) 0
5 1024*768 48.363 60.00 65.00 VESA(XGA) 0
6 1152*864 54.348 60.053 80.00 VESA 0
7 1360*768 47.712 60.015 85.50 VESA (WXGA) 0
8 1920*1080 66.587 59.934 138.5 HDTV 1080P 0
Page 9

5.3. HDMI Input(PC/DTV)

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
PC(DV (1) DDC
1 640*350 31.468 70.09 25.17 EGA Х
2 720*400 31.469 70.08 28.32 DOS 0
3 640*480 31.469 59.94 25.17 VESA(VGA) 0
4 800*600 37.879 60.31 40.00 VESA(SVGA) 0
5 1024*768 48.363 60.00 65.00 VESA(XGA) 0
6 1152*864 54.348 60.053 80.00 VESA 0
7 1360*768 47.712 60.015 85.50 VESA (WXGA) 0
8 1280*1024 63.981 60.020 108.0 VESA (SXGA) 0
9 1920*1080 67.50 60.00 148.5 HDTV 1080P 0
DTV
1 720*480 31.47 59.94 27.00 SDTV 480P
2 720*480 31.50 60.00 27.027 SDTV 480P
3 720*576 31.250 50.00 27.00 SDTV 576P
4 1280*720 37.50 50.00 74.25 HDTV 720P
5 1280*720 45.00 60.00 74.25 HDTV 720P
6 1280*720 44.96 59.94 74.176 HDTV 720P
7 1920*1080 28.125 50.00 74.25 HDTV 1080I
8 1920*1080 33.75 60.00 74.25 HDTV 1080I
9 1920*1080 33.72 59.94 74.176 HDTV 1080I
10 1920*1080 56.250 50.00 148.50 HDTV 1080P
11 1920*1080 67.50 60.00 148.50 HDTV 1080P
12 1920*1080 67.432 59.94 148.352 HDTV 1080P
13 1920*1080 27.00 24.00 74.25 HDTV 1080P
14 1920*1080 26.97 23.976 74.176 HDTV 1080P
15 1920*1080 33.75 30.00 74.25 HDTV 1080P
Page 10

ADJUSTMENT INSTRUCTION

1. Application Range

ecification sheet is applied to all of the LED TV with I D3AC chassis

2. Designation

  • (1) The adjustment is according to the order which is designated and which must be followed, according to the plan which can be changed only on agreeing.
  • (2) Power adjustment · Free Voltage
  • (3) Magnetic Field Condition: Nil
  • (4) Input signal Unit: Product Specification Standard
  • (5) Reserve after operation : Above 5 Minutes (Heat Run) Temperature - at 25 °C ± 5 °C Relative humidity : 65 ± 10 %

  • Input voltage : 220 V, 60 Hz
  • (6) Adjustment equipments: Color Analyzer(CA-210 or CA-110). DDC Adjustment Jig, Service remote control. (7) Push the "IN STOP" key - For memory initialization.

Case1 : Software version up

  • 1. After downloading S/W by USB . TV set will reboot
  • Push "In-stop" key
  • 3 Push "Power on" key
  • 4. Function inspection
  • 5. After function inspection, Push "In-stop" key
  • Case2 : Function check at the assembly line
  • 1. When TV set is entering on the assembly line, Push "In-stop" kev at first.
  • 2. Push "Power on" key for turning it on → If you push "Power on" key. TV set will recover channel information by itself.
  • 3. After function inspection. Push "In-stop" key

3. Main PCB check process

APC - After Manual-Insert, executing APC

* Boot file Download

  • (1) Execute ISP program "Mstar ISP Utility" and then click "Config" tab
  • (2) Set as below and then click "Auto Detect" and check "OK" messag

If "Error" is displayed check connection between computer jig, and set. (3) Click "Read" tab. and then load download file(XXXX.bin)

by clicking "Read".

Device Load Read Auto B, P, V. Restore HDCP Erase Config Connect Dis C
😂 Read filex xx.bin
Checksum Hex files
Unused Bytes
@ Dx00 C 0xFF
File Status
Start Ad
End Ad
ldr. : 0x000000
Batch Fil

(4) Click "Connect" tab. If "Can't" is displayed, check connection between computer jig and set

(5) Click "Auto" tab and set as below.

(6) Click "Run"

(7) After downloading. check "OK" message.

(1) Put the USB Stick to the USB socket

  • (2) Automatically detecting update file in USB Stick
    • If your downloaded program version in USB Stick is Low. it didn't work. But your downloaded version is High, USB data is automatically detecting.
  • (3) Show the message "Copying files from memory".

(4) Updating is starting.

  • (5) Updating Completed The TV will restart automatically in 5
  • (6) If your TV is turned on, check your updated version and Tool option. (explain the Tool option, next stage)
  • * If downloading version is more high than your TV have, TV can lost all channel data. In this case, you have to channel recover. if all channel data is cleared, you didn't have a DTV/ ATV test on production line.
Page 11

  • * After downloading, have to adjust Tool Option again.
    • Push "IN-START" key in service remote control. Select "Tool Option 1" and push "OK" key.
    • (3) Punch in the number. (Each model has their number)
    • (4) Completed selecting Tool option

3.1 ADC Process

  • * If ADC processes as OTP, There is no need to proceed internal ADC.
  • Enter Service Mode by pushing "ADJ" key
  • Enter Internal ADC mode by pushing "b" key at "7 ADC Calibration".

<Caution> Using "P-ONLY" key of the Adjustment remote control. power on TV.

* ADC Calibration Protocol (RS232)

NO Item CMD 1 CMD 2 Dat ta 0
Enter
Adjust MODE
Adjust
'Mode In'
А А 0 0 When transfer the 'Mode In', Carry the command.
ADC adjust ADC Adjust А D 1 0 Automatically adjustment
(The use of a internal pattern)

Adjust Sequence

  • aa 00 00 [Enter Adjust Mode]
  • xb 00 40 [Component Input480i)]
  • ad 00 10 [Adjust 480i & 1080n Comp]
  • xb 00 60 [RGB Input (1024*768)]
  • ad 00 10 [Adjust 1024*768 RGB]
  • aa 00 90 End Adjust mode
  • * Required equipment : Adjustment remote control.

3.2. EDID Download

  • (1) After enter Service Mode by pushing "ADJ" key.
  • (2) Enter EDID D/L menu
  • (3) Enter "START" by pushing "OK" key

-----------------------------------downloaded

3.3 EDID data

, . -010 - 40
0 1 2 3 4 5 6 7 8 9 Α В С D Е F
00 00 FF FF FF FF FF FF 00 1E 6D á a t )
10 0 2 01 03 68 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 71 40 61 40 45 40 31 40 01 01
30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88
40 35 00 40 84 00 00 00 1C 01 1D 00 72 51 D0 1E 20
50 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 C ł
70 C ł 00 е

(• ,
0 1 2 3 4 5 6 7 8 9 А В С D Е F
00 00 FF FF FF FF FF FF 00 1E 6D á a ł
10 ( c 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 01 01
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 40 84 63 00 00 1E 64 19 00 40 41 00 26 30
50 18 88 03 06 40 84 63 00 00 18 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 ( t
70 C ł 01 е
80 02 03 22 F1 4E 10 1F 04 93 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 1 f
A0 80 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 5A
B0 00 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E
D0 96 00 A0 5A 00 00 00 18 02 3A 80 18 71 38 2D 40
E0 58 2C 45 00 A0 5A 00 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 е

· /
0 1 2 3 4 5 6 7 8 9 А В С D Е F
00 00 FF FF FF FF FF FF 00 1E 6D ć a k )
10 C 2 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 C ł
70 C ł 01 е
80 02 03 22 F1 4E 10 9F 04 13 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 1 f
A0 1 f 01 1D 80 18 71 1C 16 20 58 2C 25 00 20 C2
B0 31 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 02 3A 80 18 71 38 2D 40 58 2C
D0 45 00 A0 5A 00 00 00 1E 01 1D 00 BC 52 D0 1E 20
E0 B8 28 55 40 C4 8E 21 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 е
Page 12

(5) Detail EDID Options are below

a. Product ID

MODEL NAME HEX EDID Table DDC Function
FHD/HD Model 0001 01 00 Analog/Digital

b. Serial No: Controlled on production line

c. Month, Year: Controlled on production line:

ex) Week : '01' -> '01'

Year : '2013' -> '17' fix

d. Model Name(Hex):

cf) TV set's model name in EDID data is below.

Model name MODEL NAME(HEX)
LG TV 00 FC 00 4C 47 20 54 56 0A 20 (LG TV)

e. Checksum: Changeable by total EDID data.

data FHD HD
EDID C/S uala HDMI RGB HDMI RGB
Block 0 43 5C A4 A5
Check sum 25 (HDMI1) 5B (HDMI1)
(Hex) Block 1 15 (HDMI2) 4B (HDMI2)
05 (HDMI3) 3B (HDMI3)

f. Vendor Specific(HDMI)

FHD model
Input Model name(HE>
HDMI1 67030C001000801E
HDMI2 67030C002000801E
HDMI3 67030C003000801E

- HD model

Input Model name(HEX)
HDMI1 67030C001000
HDMI2 67030C002000
HDMI3 67030C003000

3.4 Function Check

- Check display and sound

  • Check Input and Signal items.
    • (1) TV
  • (2) AV (SCART)
  • (3) COMPONENT (480i)
  • (4) RGB (PC : 1024 x 768 @ 60hz)
  • (5) HDMI
  • (6) PC Audio In

* Display and Sound check is executed by Remote controller

<Caution>

Not to push the INSTOP key after completion if the function inspection.

4. Total Assembly line process

4.1. White Balance adjustment

W/B Equipment condition

CA210 : LED -> CH14, Test signal: Inner pattern(80IRE)

  • Above 5 minutes H/run in the inner pattern. ("power on" key of adjust remote control)
  • If it is executed W/B adjustment in 2~3 minutes H/run, it is adjusted by Target data.
(For C DS LED / Direct LE ED modul
,
Mode Temp Coordinate spec
Cool 13.000 K X=0.269 (±0.002)
Color 0001 13,000 K Y=0.273 (±0.002)
Temperature 0.200 K X=0.285 (±0.002)
Temperature weaturn 9,300 K Y=0.293 (±0.002)
6 500 K X=0.313 (±0.002)
vvaiiii 0,500 K Y=0.329 (±0.002)
Сс Cool Medium Warm
NetCase4 Aging time Х у Х у Х у
(10111) 271 270 285 293 313 329
1 0-2 281 287 295 310 320 342
2 3-5 280 285 294 308 319 340
3 6-9 278 284 292 307 317 339
4 10-19 276 281 290 304 315 336
5 20-35 275 277 289 300 314 332
6 36-49 274 274 288 297 313 329
7 50-79 273 272 287 295 312 327
8 80-119 272 271 286 294 311 326
9 Over 120 271 270 285 293 310 325

* Aging chamber

Сс Cool Medium Warm
NetCase4 Aging time Х у х у х у
271 270 285 293 313 329
1 0-5 280 285 294 308 319 340
2 6-10 276 280 290 303 315 335
3 11-20 272 275 286 298 311 330
4 21-30 269 272 283 295 308 327
5 31-40 267 268 281 291 306 323
6 41-50 266 265 280 288 305 320
7 51-80 265 263 279 286 304 318
8 81-119 264 261 278 284 303 316
9 Over 120 264 260 278 283 303 315

* Connecting picture of the measuring instrument

(On Automatic control)

Inside PATTERN is used when W/B is controlled. Connect to auto controller or push Adjustment R/C P-ONLY → Enter the mode of White-Balance, the pattern will come out.

Page 13

* Auto-control interface and directions

  • (1) Adjust in the place where the influx of light like floodlight around is blocked. (illumination is less than 10 lux)
  • (2) Adhere closely the Color analyzer(CA210) to the module less than 10 cm distance, keep it with the surface of the Module and Color analyzer's prove vertically. (80° ~ 100°).
  • (3) Aging time
    • After aging start, keep the power on (no suspension of power supply) and heat-run over 5 minutes
    • Using 'no signal' or 'POWER ONLY' or the others, check the back light on.
  • Auto adjustment Map(using RS-232C to USB cable) RS-232C COMMAND
    • [CMD ID DATA]
    • White Palance Start W/h 00 00 Wb 00 ff White Balance End
RS-232C COMMAND
[CMD ID DATA]
RS-232C COMMAND
[CMD ID DATA] MIN
CENTER
(DEFAULT)
MAX
Cool Mid Warm Cool Mid Warm
R Gain jg Ja jd 00 172 192 192 192
G Gain jh Jb је 00 172 192 192 192
B Gain ji Jc jf 00 192 192 172 192
R Cut 64 64 64 128
G Cut 64 64 64 128
B Cut 64 64 64 128

One of R Gain/G Gain/ R Gain should be kept on 0xC0. and adjust other two lower than C0 (When R/G/B Gain are all C0. it is the FULL Dynamic Range of Module)

  • * Manual W/B process using adjust Remote control. After enter Service Mode by pushing "AD.I" key
    • Enter White Balance by pushing "▶" key at "8. White Balance"
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Commercial Tool Option
7. ADC Calibration
10. Test Pattern
12. Sub B/C
13. Ext. Input Adjust
Whit Balance
Color Temp. Cool
172
172
192
64
64
Test-Pattern ON
Backlight 100
Reset

* After you finished all adjustments Press "In-start" key and compare Tool option and Area option value with its BOM. if it is correctly same then unplug the AC cable. If it is not same, then correct it same with BOM and unplug AC cable. For correct it to the model's module from factory Jig model. * Push the "IN STOP" key after completing the function inspection. And Mechanical Power Switch must be set "ON".

4.5. Outgoing condition Configuration

■ When pressing IN-STOP key by SVC remocon. Red LED are blinked alternatively. And then automatically turn off. (Must not AC power OFF during blinking)

5. GND and HI-POT Test

5.1. HI-POT auto-check preparation

- Check the POWER cable and SIGNAL cable insertion condition

5.2 HI_POT auto_chock

  • (1) Pallet moves in the station. (POWER CORD / AV CORD is tightly inserted)
  • (2) Connect the AV JACK Tester.
  • (3) Controller (GWS103-4) on.
  • (4) HI-POT test (Auto)
    • If Test is failed, Buzzer operates
    • If Test is passed. GOOD I amp on and move to next process automatically.

5.3. Checkpoint

  • (1) Test voltage
    • Touchable Metal : 3 KV / min at 100 mA
    • SIGNAL : 3KV / min at 100 mA
  • (2) TEST time: 1 second. (case : mass production )
  • (3) TEST POINT
    • Touchable Metal => LIVE & NEUTRAL : Touchable Metal.
    • SIGNAL => LIVE & NEUTRAL SIGNAL

6. Model name & Serial number D/L Press "Power on" key of service remote control

  • (Baud rate · 115200 bps)
  • Connect RS232 Signal Cable to RS-232 Jack Write Serial number
  • Must check the serial number at the Diagnostics of SET UP menu

6.1. Signal Table

CMD LENGTH ADH ADL DATA_1 Data_n CS DELA
CMD
LENG
ADH
ADL :
: A0h
STH : 85-
: EEPRC
EEPRO
~94h (1~
0M Sub /
M Sub /
~16 byte
Address
Address
es)
s high (0
low (00
0~1F)
∼FF)
)
Data : Write data
CS : ( CS : CMD + LENGTH + ADH + ADL + Data_1 ++ Data_n
Delav : 20ms

6.2 Command Set

Adjust mode CMD(hex) LENGTH(hex) Description
EEPROM WRITE A0h 84h+n n-bytes Write (n = 1~16)

FOS Default write : <7mode data> write

Vtotal V Frequency Sync Polarity Htotal Hstart Vstart 0 Phase

Data write : Model Name and Serial Number write in EEPROM.

Color Temperature · COOL Medium Warm

Page 14

6.3. Method & notice

  • (1) Serial number D/L is using of scan equipment.
  • (1) Senarhumber D/L is using of scan equipment. (2) Setting of scan equipment operated by Manufacturing Technology Group.
  • (3) Serial number D/L must be conformed when it is produced in production line, because serial number D/L is mandatory by D-book 4.0.
  • * Manual Download(Model Name and Serial Number) If the TV set is downloaded by OTA or Service man, sometimes model name or serial number is initialized.(Not always) There is impossible to download by bar code scan so It need

Manual download.

  • 1) Press the "Instart" key of Adjustment remote control.
  • 2) Go to the menu "6 Model Number D/L" like below photo
  • 3) Input the Factory model name(ex 32LP360H-ZA) or Serial number like photo.

  • Check the model name Instart menu. → Factory name displayed. (ex 32LP360H-ZA)
  • 5) Check the Diagnostics.(DTV country only) → Buyer model displayed.(ex 32LP360H)

7. Cl+ key download 7.1 Communication Prot connection

Connection : PCBA (USB Port) → USB to Serial Adapter (UC-232A) → RS-232C cable → PC(RS-232C port)

RS-232C Cable PC (RS-232C Port)

7.2. CI+ Key Download

  • Set CI+ Key path Directory at Start Mac & CI+ Download Programme
  • Com 1,2,3,4 and 115200(Baudrate)

  • Port connection button click(1)
  • Push the (2) MAC Address write.
  • At success Download, check the OK (3).
  • Start CI+ Key Download, Push the (4).
  • Check the OK or NG.

Page 15

8. Check Commercial Features. 8.1. External speaker(80HM, 1W, Single-End)

<Fauinment & Condition>

  • External speaker and Oscilloscope
  • Power only mode
  • (1) Connect external speaker(8 ohm) to speaker out port with phone jack on TV side as below.
  • (2) Check the Max. speaker output is 1W or not. Sine wave with 1KHz will be displayed.

8.2. IR OUT

  • < Equipment & Condition >
  • Simple Jig (commercial check JIG)
  • Power only mode

  • (1) Connect each other RS232C port on the Commercial Check JIG.
  • (2) Press any key on Service Remote-control.(3) Check the LED status of the Check JIG.
    • IR LED(OK condition: blinking) (LED #1)
Page 16

TROUBLE SHOOTING GUIDE

1. Check the booting Voltage

2. Digital TV Video

Page 17

3. Analog TV Video

4. AV Video

Page 18

5. RGB Video

6. HDMI Video

Page 19

7. Audio of All iput

8. TV Audio

Page 20

9. AV Audio

10. RGB Audio

Page 21

Page 22

EXPLODED VIEW

- IMPORTANT SAFETY NOTICE ------------------------------------

ctrical and mechanical parts in this chassis have special safety-related characteristics. Th parts are identified by A 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.

ot modify the original design without permission of manufacturer.

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FOR FHD REVERSE(10bit)

[51Pin LVDS Connector] (For FHD 60Hz)

LVDS

LGElectronics

SHEET

BLOEK

LVDS

C LG ELECTRONICS

Page 29

Page 30

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.

MODEL 2013 S7LR2 DATE 2012.11.12
BLOEK RS-232C SHEET 10
Page 31

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Page 34

DTVANT_LOUT EU.OPT E

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.

LG ELECTRONIES

Page 35

EXT_SPEAKER_AMP

SPEAKER OUT JACK

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.

MODEL 2013 S7LR2 DATE 2012.11.12
BLOEK EXT_SPK SHEET 18
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