LG 55EC900V, 55EC900V-ZB Schematic

Internal Use Only
OLED TV
SERVICE MANUAL
CHASSIS : ED42D
MODEL : 55EC900V 55EC900V-ZB
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Printed in KoreaP/NO : MFL68522305 (1508-REV00)
CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ........................................................................ 3
SERVICING PRECAUTIONS .................................................................... 4
SPECIFICATION ....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 13
BLOCK DIAGRAM ................................................................................. 20
EXPLODED VIEW .................................................................................. 30
SCHEMATIC CIRCUIT DIAGRAM ............................................APPENDIX
TROUBLE SHOOTING GUIDE ................................................ APPENDIX
Only for training and service purposes
- 2 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
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 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 jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 MΩ and 5.2 MΩ. 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 1.5 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 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
Only for training and service purposes
- 3 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
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 conict 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 specied 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 ammable mixture. Unless specied 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 xtures specied in this
service manual.
CAUTION: Do not connect the test xture 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 eld-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 sol-
der removal devices not classied as “anti-static” can generate electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient 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 oor can generate static electricity suf­cient 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 1.25 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, suction-
type 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 ows 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.
Only for training and service purposes
- 4 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at 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.
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.
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.
Only for training and service purposes
- 5 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement
.
1. Application range
This specification is applied to the OLED TV used ED42D 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 Remarks
1 Market EU(PAL Market-37Countries) DTV & Analog (Total 37 countries)
DTV (MPEG2/4, DVB-T) : 26 countries
Germany, Netherland, Switzerland, Hungary, Austria, Slovenia, Bulgaria, France, Spain, Belgium, Luxemburg, Greece, Czech, Croatia, Turkey, Morocco, Ireland, Latvia, Estonia, Lithuania, Poland, Portugal, Romania, Albania, Bosnia, Slovakia, Belarus
DTV (MPEG2/4, DVB-T2): 11 countries
UK(Ireland), Sweden, Denmark, Finland, Norway, Ukraine, Kaza­khstan, Russia, Italy, Croatia, Serbia
DTV (MPEG2/4, DVB-C): 37 countries
Germany, Netherland, Switzerland, Hungary, Austria, Slovenia, Bulgaria, France, Spain, Italy, Belgium, Russia, Luxemburg, Greece, Czech, Croatia, Turkey, Morocco, Ireland, Latvia, Estonia, Lithuania, Poland, Portugal, Romania, Albania, Bosnia, Serbia, Slovakia, Bela­rus, UK, Sweden, Denmark, Finland, Norway, Ukraine, Kazakhstan
DTV (MPEG2/4, DVB-S): 37 countries
Germany, Netherland, Switzerland, Hungary, Austria, Slovenia, Bulgaria, France, Spain, Belgium, Luxemburg, Greece, Czech, Tur­key, Morocco, Ireland, Latvia, Estonia, Lithuania, Poland, Portugal, Romania, Albania, Bosnia, Slovakia, Belarus, UK(Ireland), Sweden, Denmark, Finland, Norway, Ukraine, Kazakhstan, Russia, Italy, Croatia, Serbia
Supported satellite : 35 satellites
ABS1 75.0E, AMOS 4.0W, ASIASAT3S 105.5E, ASTRA 19.2E, ASTRA 23.5E, ASTRA 28.2E, ASTRA 4.8E, ATLANTIC BIRD2
8.0W, ATLANTIC BIRD3 5.0W, BADR 26.0E, DIRECTV-1R 56.0E, EUROBIRD 9A 9.0E, EUROBIRD3 33.0E, EUTELSAT 36 A/B 36.0E, EUTELSAT W2A 10.0E, EUTELSAT W3A 7.0E, EUTELSAT7WA
7.3W, EUTELSAT 16.0E, EXPRESS AM1 40.0E, EXPRESS AM3
140.0E, EXPRESS AM33 96.5E, HELLASSAT 39.0E, HISPASAT 1CDE 30.0W, HOTBIRD 13.0E, INTELSAT10&7 68.5E, INTELSAT15
85.2E, INTELSAT1R 50.0W, INTELSAT903 33.5W, INTELSAT904
60.0E, NILESAT 7.0W, NSS12 57.0E, THOR 0.8W, TURKSAT
42.0E,YAMAL201 90.0E, OTHER
Only for training and service purposes
- 6 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
No. Item Specication Remarks
1) Digital TV
- DVB-T/T2
- DVB-C
2 Broadcasting system
3 Program coverage
4 Receiving system
- DVB-S/S2
2) Analogue TV
- PAL/SECAM B/G/I/D/K
- SECAM L/L’
1) Digital TV
- VHF, UHF
- C-Band, Ku-Band
2) Analogue TV
- VHF : E2 to E12
- UHF : E21 to E69
- CATV : S1 to S20
- HYPER : S21 to S47
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 64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
► DVB-T2 (Model : *L*V*-Z* (T2 only Model))
- 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 64-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 256-QAM : 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
► DVB-S/S2
- symbolrate DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s DVB-S (QPSK) : 2 ~ 45Msymbol/s
- viterbi DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8 DVB-S2 mode : 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10
5 Scart (1EA) PAL, SECAM
6 Video Input RCA(1EA) PAL, SECAM, NTSC4.43 4 System : PAL, SECAM, NTSC4.43, PAL60 7 Component Input (1EA) Y/Cb/Cr, Y/Pb/Pr 480i /576i/480p/576p/720p/1080i/1080p
8 HDMI Input (4EA)
9 Audio Input (1EA) DVI Audio, AV1/AV2/Component L/R Input.
10 Head phone out (1EA)
11 SDPIF out (1EA) SPDIF out 12 USB (3EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD 13 Ethernet Connect(1EA) Ethernet Connect 14 PCMCIA Card slot (1EA) PCMCIA slot 15 RS-232C(1EA) For SVC only Side, Phone type
HDMI1-DTV, HDMI2-DTV, HDMI3-DTV, HDMI4-DTV
Antenna, AV1, AV2, Component, HDMI1, HDMI2, HDMI3, HDMI4, USB1, USB2, USB3
Scart Jack is Full scart and support ATV/DTV-OUT (not support DTV Auto AV)
HDMI1: PC support(HDMI version 1.4) Support HDCP
Only for training and service purposes
- 7 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
5. Component Video Input (Y, Pb, Pr)
No.
1. 720×480 15.73 60.00 SDTV, DVD 480i
2. 720×480 15.63 59.94 SDTV, DVD 480i
3. 720×480 31.47 59.94 480p
4. 720×480 31.50 60.00 480p
5. 720×576 15.625 50.00 SDTV, DVD 625 Line
6. 720×576 31.25 50.00 HDTV 576p
7. 1280×720 45.00 50.00 HDTV 720p
8. 1280×720 44.96 59.94 HDTV 720p
9. 1280×720 45.00 60.00 HDTV 720p
10. 1920×1080 31.25 50.00 HDTV 1080i
11. 1920×1080 33.75 60.00 HDTV 1080i
12. 1920×1080 33.72 59.94 HDTV 1080i
13. 1920×1080 56.250 50 HDTV 1080p
14. 1920×1080 67.5 60 HDTV 1080p
Resolution H-freq(kHz) V-freq(Hz) Pixel clock
Specication
Only for training and service purposes
- 8 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
6. HDMI Input
6.1. DTV mode
No. Resolution H-freq(kHz) V-freq.(Hz) Proposed
1. 640*480 31.469 / 31.5 59.94/60 SDTV 480P
2. 720*480 31.469 / 31.5 59.94 / 60 SDTV 480P
3. 720*576 31.25 50 SDTV 576P
4. 720*576 15.625 50 SDTV 576I
5. 1280*720 37.500 50 HDTV 720P
6. 1280*720 44.96 / 45 59.94 / 60 HDTV 720P
7. 1920*1080 33.72 / 33.75 59.94 / 60 HDTV 1080I
8. 1920*1080 28.125 50.00 HDTV 1080I
9. 1920*1080 26.97 / 27 23.97 / 24 HDTV 1080P
10. 1920*1080 28.125 25 HDTV 1080P
11. 1920*1080 33.716 / 33.75 29.976 / 30.00 HDTV 1080P
12. 1920*1080 56.250 50 HDTV 1080P
13. 1920*1080 67.43 / 67.5 59.94 / 60 HDTV 1080P
6.2. PC mode
No. Resolution H-freq(kHz) V-freq.(Hz) Proposed
1 640 x 350 @70Hz 31.468 70.09 EGA
2 720 x 400 @70Hz 31.469 70.08 DOS
3 640 x 480 @60Hz 31.469 59.94 VESA(VGA)
4 800 x 600 @60Hz 37.879 60.31 VESA(SVGA)
5 1024 x 768 @60Hz 48.363 60.00 VESA(XGA)
6 1152 x 864 @60Hz 54.348 60.053 VESA
7 1280 x 1024 @60Hz 63.981 60.020 VESA(SXGA)
8 1360 x 768 @60Hz 47.712 60.015 VESA(WXGA)
9 1920 x 1080 @60Hz 67.5 60.00 WUXGA(Reduced Blanking))
Only for training and service purposes
- 9 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
7. 3D Mode
7.1. HDMI 1.4b (3D supported mode automatically)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed
1
640*480
2 62.938 / 63 59.94/ 60 50.35/50.4 1
3 31.469 / 31.5 59.94/ 60 50.35/50.4 1 Side-by-side(Full) (SDTV 480P)
4
720*480
5 62.938 / 63 59.94 / 60 54/54.06 2,3
6 31.469 / 31.5 59.94 / 60 54/54.06 2,3 Side-by-side(Full) (SDTV 480P)
7
720*576
8 62.5 50 54 17,18
9 31.25 50 54 17,18 Side-by-side(Full) (SDTV 576P)
10
11 75 50 148.5 19
12 37.5 50 148.5 19 Side-by-side(Full) (HDTV 720P)
1280*720
13 44.96 / 45 59.94 / 60 74.18/74.25 4
14 89.91 / 90 59.94 / 60 148.35/148.5 4
15 44.96 / 45 59.94 / 60 148.35/148.5 4 Side-by-side(Full) (HDTV 720P)
16
17 67.432 / 67.5 59.94 / 60 148.35/148.5 5
18 33.72 / 33.75 59.94 / 60 148.35/148.5 5 Side-by-side(Full) (HDTV 1080I)
19 28.125 50.00 74.25 20
20 56.25 50.00 148.5 20
21 28.125 50.00 148.5 20 Side-by-side(Full) (HDTV 1080I)
22 26.97 / 27 23.97 / 24 74.18/74.25 32
23 43.94 / 54 23.97 / 24 148.35/148.5 32
1920*1080
24 26.97 / 27 23.97 / 24 148.35/148.5 32 Side-by-side(Full) (HDTV 1080P)
25 28.125 25 74.25 33
26 56.25 25 148.5 33
27 28.125 25 148.5 33 Side-by-side(Full) (HDTV 1080P)
28 33.716 / 33.75 29.976 / 30.00 74.18/74.25 34
29 67.432 / 67.5 29.976 / 30.00 148.35/148.5 34
30 33.716 / 33.75 29.976 / 30.00 148.35/148.5 34 Side-by-side(Full) (HDTV 1080P)
31 56.25 50 148.5 31
32 67.43 / 67.5 59.94 / 60 148.35/148.50 16
31.469 / 31.5 59.94/ 60 25.175/25.2 1
31.469 / 31.5 59.94 / 60 27.00/27.03 2,3
31.25 50 27 17,18
37.5 50 74.25 19
33.72 / 33.75 59.94 / 60 74.18/74.25 5
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Field alternative
Top-and-Bottom Side-by-side(half)
Frame packing Field alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Frame packing Line alternative
Top-and-Bottom Side-by-side(half)
Top-and-Bottom Side-by-side(half)
Secondary(SDTV 480P) Secondary(SDTV 480P)
Secondary(SDTV 480P)
(SDTV 480P)
Secondary(SDTV 480P) Secondary(SDTV 480P)
Secondary(SDTV 480P)
(SDTV 480P)
Secondary(SDTV 576P) Secondary(SDTV 576P)
Secondary(SDTV 576P)
(SDTV 576P)
Primary(HDTV 720P) Primary(HDTV 720P)
Primary(HDTV 720P)
(HDTV 720P)
Primary(HDTV 720P) Primary(HDTV 720P)
Primary(HDTV 720P)
(HDTV 720P)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
Primary(HDTV 1080I)
(HDTV 1080I)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
Primary(HDTV 1080I)
(HDTV 1080I)
Primary(HDTV 1080P) Primary(HDTV 1080P)
Primary(HDTV 1080P)
(HDTV 1080P)
Secondary(HDTV 1080P) Secondary(HDTV 1080P)
Secondary(HDTV 1080P)
(HDTV 1080P)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
Primary(HDTV 1080P)
(HDTV 1080P)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
Only for training and service purposes
- 10 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
7.2. HDMI Input(1.3)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 3D input proposed mode
1 720*480 31.5 60 27.03 SDTV 480P
2 720*576 31.25 50 27 SDTV 576P
3 1280*720 45.00 60.00 74.25 HDTV 720P
4 1280*720 37.500 50 74.25 HDTV 720P
5 1920*1080 33.75 60.00 74.25 HDTV 1080I
6 1920*1080 28.125 50.00 74.25 HDTV 1080I
7 1920*1080 27.00 24.00 74.25 HDTV 1080P
8 1920*1080 28.12 25 74.25 HDTV 1080P
9 1920*1080 33.75 30.00 74.25 HDTV 1080P
10 1920*1080 67.50 60.00 148.5 HDTV 1080P
11 1920*1080 56.250 50 148.5 HDTV 1080P
2D to 3D, Side by Side(Half), Top & Bot­tom, Checker Board, Frame Sequential, Row Interleaving, Column Interleaving
2D to 3D, Side by Side(Half), Top & Bottom
2D to 3D, Side by Side(Half), Top & Bot­tom, Checker Board, Row Interleaving, Column Interleaving
2D to 3D, Side by Side(Half), Top & Bottom, Checker Board, Single Frame Sequential, Row Interleaving, Column Interleaving
7.3. RF Input(3D supported mode manually)
No. Resolution Proposed 3D input proposed mode
1 HD (DTV)
2 SD (DTV)
3 SD (ATV : CVBS / SCART) -
1080I
720P
576P
576I
2D to 3D Side by Side(Half) Top & Bottom
7.4. RF Input (3D supported mode automatically)
No. Signal 3D input proposed mode
1 Frame Compatible Side by Side(Half), Top & Bottom
7.5. USB, DLNA (Movie) Input (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 Under 704x480 - - - 2D to 3D
Over 704x480
2
interlaced
Over 704x480
3
progressive
Over 704x480
4
progressive
- - - 2D to 3D, Side by Side(Half), Top & Bottom
- 50 / 60 -
- others -
2D to 3D, Side by Side(Half), Top & Bottom, Checker Board, Row Interleaving, Column Interleaving, Frame Sequential
2D to 3D, Side by Side(Half), Top & Bottom, Checker Board, Row Interleaving, Column Interleaving
7.6. USB, DLNA (Photo) Input (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 Under 320x240 - - - 2D to 3D
2 Over 320x240 - - - 2D to 3D, Side by Side(Half), Top & Bottom
Only for training and service purposes
- 11 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
* USB, DNLA Input (3D supported mode automatically)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 1080P 33.75 30 -
Side by Side(Half), Top & Bottom, Checker Board, MPO(Photo), JPS(Photo)
7.7. HDMI-PC Input (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed
1 1024*768 48.36 60 65
2 1360*768 47.71 60 85.5
2D to 3D, Side by Side(half) Top & Bottom
HDTV 768P
2D to 3D, Side by Side(half), Top
3 1920*1080 67.500 60 148.50
& Bottom, Checker Board, Single Frame Sequential, Row Interleaving,
HDTV 1080P
Column Interleaving
640*350
4 Others - - -
2D to 3D, Side by Side(half) Top & Bottom
720*400 640*480 800*600 1152*864
7.8. Component Input(3D) (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock Proposed 3D input proposed mode
1 1280*720 45.00 60.00 74.25 HDTV 720P
2 1280*720 37.500 50 74.25 HDTV 720P
3 1920*1080 33.75 60.00 74.25 HDTV 1080I
4 1920*1080 28.125 50.00 74.25 HDTV 1080I
5 1920*1080 27.00 24.00 74.25 HDTV 1080P
6 1920*1080 28.12 25 74.25 HDTV 1080P
7 1920*1080 33.75 30.00 74.25 HDTV 1080P
8 1920*1080 67.50 60.00 148.5 HDTV 1080P
9 1920*1080 56.250 50 148.5 HDTV 1080P
10 Others - - - SDTV
2D to 3D, Side by Side(Half), Top & Bottom
7.9. Miracast, Widi (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 1024X768p - 30 / 60 -
2D to 3D, Side by Side(Half), Top & Bottom2. 1280x720p - 30 / 60 -
3 1920X1080p 30 / 60
4 Others - 2D to 3D
7.10. 3D Input mode
No. Side by Side Top & Bottom Checker board
1
ii.
Only for training and service purposes
iii.
iv.
- 12 -
Single Frame
Sequential
v.
Frame
Packing
vi.
2D to 3D
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to ED42D Chassis applied OLED TV all models manufactured in TV factory.
2. Designation
(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. (3) The 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) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15 °C.
In case of keeping module is in the circumstance of 0 °C, it should be placed in the circumstance of above 15 °C for 2 hours. In case of keeping module is in the circumstance of below
-20 °C, it should be placed in the circumstance of above 15 °C for 3 hours.
[Caution] When still image is displayed for a period of 20 minutes or longer (Especially where W/B scale is strong. Digital pattern 13ch and/or Cross hatch pattern 09ch), there can some afterimage in the black level area.
(3) Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process
: DETECT → MAC_WRITE → ESN → WIDEVINE_
WRITE → CI+ → HDCP14 → HDCP20
4) Play: START
5) Check of result: Ready, Test, OK or NG
(4) Inspection
- In INSTART menu, check these keys.
3.3. LAN port Inspection
3.3.1. Equipment and Condition
Each other connection to LAN Port of IP Hub and Jig.
3.3.2. LAN inspection solution
▪ LAN Port connection with PCB ▪ Setting automatic IP
3. MAIN PCBA Adjustments
3.1. ADC Calibration
- An ADC calibration is not necessary because MAIN SoC
(LGE1311) is already calibrated from IC Maker.
3.2. MAC Address, ESN, Widevine, HDCP2.0 key download
* CI+ key : only for ED42D(55EC930V-ZA)
(1) Equipment & Condition
1) Play file: keydownload.exe
(2) Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
3) Connect
: PCBA Jig → RS-232C Port == PC → RS-232C Port
▪ If you want manual connection, enter Network connection at
MENU Mode of TV. Press Start connection key, then Network will be connected.
Only for training and service purposes
- 13 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
3.2.3. Widevine, ESN, HDCP1.4, HDCP2.0 key inspection
- Confirm key input data at the "IN START" MENU Mode.
3.3. LAN PORT INSPECTION(PING TEST)
3.3.1. Equipment setting
(1) Play the LAN Port Test PROGRAM. (2) Input IP set up for an inspection to Test Program.
- IP Number : 12.12.2.2
Connect: SET → LAN Port == PC → LAN Port
SET PC
3.3.2. LAN PORT inspection(PING TEST)
(1) Play the LAN Port Test Program. (2) Connect each other LAN Port Jack. (3) Play Test (F9) button and confirm OK Message. (4) Remove LAN cable.
3.4. Model name & Serial number Download
3.4.1. Model name & Serial number D/L
Press "P-ONLY" key of service remote control.
(Baud rate : 115200 bps)
Connect RS-232C Signal to USB Cable to USB. Write Serial number by use USB port. Must check the serial number at Instart menu.
3.4.2. Method & notice
(1) Serial number 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) It 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 "7.Model Number D/L" like below photo.
3) Input the Factory model name or Serial number [Example]
4) Check the model name Instart menu. → Factory name
displayed.
[Example]
3.5. CI+ Key checking method
* Only for ED42D(55EC930V-ZA)
Check whether the key was downloaded or not at ‘In Start’ menu. (Refer to below).
Check the Download to CI+ Key value in LGset.
3.5.1. Check the method of CI+ Key value
(1) Check the method on Instart menu (2) Check the method of RS232C Command
1) Into the main ass’y mode(RS232: aa 00 00)
CMD 1 CMD 2 Data 0
A A 0 0
2) Check the key download for transmitted command (RS232: ci 00 10)
CMD 1 CMD 2 Data 0
C I 1 0
3) Result value
- Normally status for download : OKx
- Abnormally status for download : NGx
3.5.2. Check the method of CI+ key value(RS232)
1) Into the main ass’y mode(RS232: aa 00 00)
CMD 1 CMD 2 Data 0
A A 0 0
2) Check the mothed of CI+ key by command (RS232: ci 00 20)
CMD 1 CMD 2 Data 0
C I 2 0
3) Result value i 01 OK 1d1852d21c1ed5dcx
CI+ Key Value
Only for training and service purposes
- 14 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
4. Manual Adjustment
4.1. ADC adjustment need not. Because of OTP(Auto ADC adjustment)
4.2. EDID DATA
HDMI EDID DATA 3D
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 00 FF FF FF FF FF FF 00 1E 6D
10 20 0F 50 54 A1 8 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 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30 50 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 60 3E 1E 53 10 00 0A 20 20 20 20 20 20 70 80 02 03 3A F1 4E 10 9F 04 13 05 14 03 02 12 20 21 90 22 15 01 29 3D 06 C0 15 07 50 09 57 07 A0
B0 C0 2D 40 58 2C 45 00 40 84 63 00 00 1E 01 1D 80 18 D0 71 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D
E0 00 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
- HDMI1 ~ HDMI4
- In the data of EDID, bellows may be different by Input mode.
Product ID
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
Serial No: Controlled on production line. Month, Year: Controlled on production line:
ex) Monthly : ‘01’ → ‘01’, Year : ‘2015’ → ‘19’
Model Name(Hex): LGTV
Chassis MODEL NAME(HEX)
ED42D 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
Checksum(LG TV): Changeable by total EDID data.
Input 1 2 3
HDMI1 E7 85 X
HDMI2 E7 75 X
HDMI3 E7 65 X
HDMI4 E7 55 X
Vendor Specific(HDMI)
INPUT MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 B8 2D 20 C0 0E 01 4F 00 FE 08 10 06 10 18 10 28 10 38 10
HDMI2 78 03 0C 00 20 00 B8 2D 20 C0 0E 01 4F 00 FE 08 10 06 10 18 10 28 10 38 10
HDMI3 78 03 0C 00 30 00 B8 2D 20 C0 0E 01 4F 00 FE 08 10 06 10 18 10 28 10 38 10
HDMI4 78 03 0C 00 40 00 B8 2D 20 C0 0E 01 4F 00 FE 08 10 06 10 18 10 28 10 38 10
ⓔ1
01
02 3A 80 18 71 38
ⓔ2
5. White Balance Adjustment
5.1. Overview
5.1.1. W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel's W/B deviation (2) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to prevent saturation of Full Dynamic range and data, one of R/G/B is fixed at 192, and the other two is lowered to find the desired value.
(3) Adjustment condition : normal temperature
1) Surrounding Temperature : 25 °C ± 5 °C
2) Surrounding Humidity : 20 % ~ 80 %
3) Surrounding Humidity: 20% ~ 80%
4) Before White balance adjustment, Keep power on status, don’t power off
5.1.2. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux. Try to isolate adj. area into dark surrounding.
(2) Probe location: Color Analyzer(CA-210) probe should be
within 10 cm and perpendicular of the module surface (80°~ 100°).
(3) Aging time
1) After Aging Start, Keep the Power ON status during 5 Minutes.
2) In case of LED, Back-light on should be checked using no signal or Full-white pattern.
5.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14 / OLED : CH : 17)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed) (3) Adjustment Remote control (4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
▪ Color Analyzer Matrix should be calibrated using CS-1000.
5.3. Equipment connection MAP
Color Analyzer
Probe
USB to RS-232C
Signal Source
* If TV internal pattern is used, not needed
* Pattern Generator
RS-232C
Computer
RS-232C
Colorimetry Data Block(HDMI) : Not supporting XvYcc
INPUT MODEL NAME(HEX)
HDMI1 E3 05 00 00
HDMI2 E3 05 00 00
HDMI3 E3 05 00 00
Only for training and service purposes
- 15 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
5.4. Adj. Command (Protocol)
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND
CMD DATA ID
Wb 00 00 Begin White Balance adj.
Wb 00 ff
End White Balance adj.(internal pattern disappears)
(2) Adjustment Map
Command
(lower case ASCII)
CMD1 CMD2 MIN MAX
Cool
Medium
Warm
Adj. item
R Gain j g 00 C0
G Gain j h 00 C0
B Gain j i 00 C0
R Cut
G Cut
B Cut
R Gain j a 00 C0
G Gain j b 00 C0
B Gain j c 00 C0
R Cut
G Cut
B Cut
R Gain j d 00 C0
G Gain j e 00 C0
B Gain j f 00 C0
R Cut
G Cut
Explanation
Data Range
(Hex.)
Default
(Decimal)
5.6. Reference(White Balance Adj. coordinate and color temperature)
(1) Luminance: 204 Gray, 80IRE (2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
Mode
Coordinate
x y
Temp ∆uv
Cool 0.277 0.278 11,000K -0.0030
Medium 0.286 0.289 9,300K 0.0000
Warm 0.313 0.329 6,500K +0.0030
(3) Standard color coordinate and temperature using CA-210
(CH-17)
Mode
Coordinate
x y
Temp ∆uv
Cool 0.277 ± 0.002 0.278 ± 0.002 11,000 K -0.0030
Medium 0.286 ± 0.002 0.289 ± 0.002 9,300 K 0.0000
Warm 0.313 ± 0.002 0.329 ± 0.002 6,500 K +0.0030
6. Magic motion remote control check
Results are automatically marked in Instart OSD after through the AP/Magic Remote control Equipment on the line.
5.5. Adjustment method
5.5.1. Auto WB calibration
(1) Set TV in ADJ mode using P-Only key(or POWER ON key). (2) Place optical probe on the center of the display.
- It need to check probe condition of zero calibration before adjustment.
(3) Connect RS-232C Cable (4) Select mode in ADJ Program and begin adjustment. (5) When WB adjustment is completed with OK message, check
adjustment status pre-set mode.(Cool, Medium, Warm)
(6) Remove probe and RS-232C cable
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
5.5.2. White balance table
(1) Cool Mode
1) Purpose : Especially G-gain fix adjust leads to the
luminance enhancement. Adjust the color temperature to reduce the deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Adjust the G gain more than 172 (If R gain or G gain is more than 255, G gain can adjust less than 172 ) and change the others (R/B Gain).
3) Adjustment mode : mode - Cool
(2) Medium / Warm Mode
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 192 (default data) and decrease the others.
3) Adjustment mode : Two modes - Medium / Warm
Only for training and service purposes
- 16 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
7. WIFI MAC ADDRESS CHECK
(1) Using RS232
Command Set ACK
Transmission [A][I][][Set ID][][20][Cr] [O][K][X] or [NG]
(2) Check the menu on in-start
8. 3D pattern test
8.1. Test equipment
(1) Pattern Generator MSHG-600 or MSPG-6100 (HDMI 1.4
support)
(2) Pattern: HDMI mode (model No. 872, pattern No. 83)
8.2. Test method
(1) Input 3D test signal as Fig.1.
9. Eye-Q function check
(1) Press 'EYE button' on the adjustment remote-control. (2) Check each raw data. (3) Cover 'Eye Q sensor' on the front of set with hand and wait
for 6 seconds.
(4) Check each data is lower than 10 and ‘OK’ message. If data
isn’t lower than 10 in 6 seconds, replace Eye Q sensor. (5) Uncover hand from Eye Q sensor and wait for 6 seconds. (6) Check each data increase or not. If data don’t increase,
replace Eye Q sensor.
10. Joystick function check
* Before you start a test, you must run a Power Only
Mode(Full white).
(1) Channel Up Test : Press UP KEY OF SET
<Fig.1> HDMI Mode No.872, Pattern No. 83
(2) Press ‘OK” key as a 3D input OSD is shown. (3) Check pattern as Fig2 without 3D glasses. (3D mode
without 3D glasses)
<Fig.2> OK in 3D mode without
3D glasses
Only for training and service purposes
<Fig.3> NG in 3D mode without
3D glasses
- 17 -
(2) Channel Down Test : Press DOWN KEY OF SET
(3) Volume Up Test : Press Left KEY OF SET
(4) Volume Down Test : Press Right KEY OF SET
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
(5) Enter Test : Press Enter KEY OF SET
12. AUDIO output check
12.1. AUDIO output check
(1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation (2) CVBS, Component: 1 KHz sine wave signal (0.5 Vrms)
- Don’t need to run a test with this sequence.
For example, the sequence such as ‘Right → Up → Down → Left → Enter’ is allowed.
11. HDMI ARC Function Inspection
11.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
11.2. Test method
(1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI1)
(2) Check the sound from the TV Set
(3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
12.2. Specification
Item Min Typ Max Unit Remark
Audio practical max Output, L/R
(Distortion=10%
max Output)
9.0 10.0 12.0 W
8.5 8.9 9.9 Vrms
- Condition: EQ/AVL/Clear Voice Off
- Speaker (8Ω Impedance)
12.3. Audio Output Inspection
- Input “Check-S KEY” of adjust remote control to inspect speaker
(1) When you click the first, the output volume of left &right
main speakers must be 50.
(2) When you click the second, the output volume of left &right
main speakers must be 80.
(3) When you click the third, the output volume of left &right
main speakers must be 100.
(4) When you click the fourth, the output volume of left main
speaker must be 50.
(5) When you click the fifth, the output volume of right main
speaker must be 50.
13. GND and HI-POT Test
13.1. GND & HI-POT auto-check preparation
- Check the POWER cable and SIGNAL cable insertion condition
13.2. GND & HI-POT auto-check
(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) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test). (Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next process automatically.
* Remark: Inspect in Power Only Mode and check SW version
in master equipment
Only for training and service purposes
13.3. Checkpoint
(1) Test voltage
- GND: 1.5 KV/min at 100 mA
- SIGNAL: 3 KV/min at 100 mA
(2) TEST time: 1 second (3) TEST POINT
- GND Test = POWER CORD GND and SIGNAL CABLE
GND.
- Hi-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5 mArms
- 18 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
14. USB S/W download(Service only)
(1) Put the USB Stick to the USB socket. (2) Go to General menu then enter to About This TV.
(3) Enter the USB EXPERT MODE.
(4) Updating is starting. (5) Updating completed, the TV will restart automatically (6) If your TV is turned on, check your updated version and
Tool option.
* 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.
* After downloading, Tool option setting is needed again.
(1) Push "IN-START" key in service remote control. (2) Select "Tool Option 1" and push "OK" key. (3) Punch in the number. (Each model has their number)
Only for training and service purposes
- 19 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
1. M14
BLOCK DIAGRAM
Only for training and service purposes
- 20 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
2. M14 I2C Map
Only for training and service purposes
- 21 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
3. Power
Only for training and service purposes
- 22 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
4-1. Tuner Block Diagram TDJM-G251D (EU DVB)
Only for training and service purposes
- 23 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
4-2. CI Block Diagram (EU, CN)
Only for training and service purposes
- 24 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
5. Video & Audio IN
Only for training and service purposes
- 25 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
6. Audio out
Only for training and service purposes
- 26 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
7.HDMI
Only for training and service purposes
- 27 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
8. Panel Interface
Only for training and service purposes
- 28 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
9. USB / WiFi-BT / IR-KEY-EYE
Only for training and service purposes
- 29 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
A2
AV1
AG1
700
710
900
200
400
540
521
522
530
501
510
511
500
502
570
571
121
811
810
120
LV1
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.
Only for training and service purposes
- 30 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Loading...
+ 70 hidden pages