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Internal Use Only
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LCD MONITOR TV SERVICE MANUAL
CHASSIS : LD93B
MODEL : M1962D
CAUTION
M1962D-P(W)ZL
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62477301(0908-REV00)
Printed in Korea
CONTENTS
CONTENTS .............................................................................................. 2 PRECAUTIONS .........................................................................................3 SPECIFICATION ........................................................................................6 ADJUSTMENT INSTRUCTION ...............................................................13 TROUBLE SHOOTING ............................................................................17 BLOCK DIAGRAM...................................................................................25 EXPLODED VIEW .................................................................................. 26 SVC. SHEET ...............................................................................................
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
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 1W), keep the resistor 10mm away from PCB. Keep wires away from high voltage or high temperature parts.
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
AC Volt-meter
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.
Good Earth Ground such as WATER PIPE, CONDUIT etc.
To Instrument's exposed METALLIC PARTS
0.15uF
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 1M and 5.2M. 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.
1.5 Kohm/10W
When 25A is impressed between Earth and 2nd Ground for 1 second, Resistance must be less than 0.1 *Base on Adjustment standard
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
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". 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
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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 500ºF to 600ºF. 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. (500ºF to 600ºF) 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 (500ºF to 600ºF) 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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LGE Internal Use Only
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.
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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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LGE Internal Use Only
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application Range.
1) This spec sheet is applied all of the LCD TV with LD93A chassis. 2) Not included spec and each product spec in this spec sheet apply correspondingly to the following each country standard and requirement of Buyer
3.Test method
1) Performance : LGE TV test method followed 2) Demanded other specification - Safety : CE,IEC specification - EMC : CE,IEC specification
Model Market EU Mx62D (PAL Market) Appliance Safety : IEC/ EN60065 EMI :EN55013 EMS : EN55020
2. Specification
Each part is tested as below without special appointment 1) Temperature : 25±5°C(77±9°F) , CST: 40±5°C 2) Relative Humidity : 65±10% 3) Power Voltage : Standard input voltage (100~240V@50/60Hz) *Standard Voltage of each product 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 20 minutes prior to the adjustment.
4. Electrical Specification
4.1 Module Specification
- M1962D- P(W)ZL : LGD / LM185WH1- TLD2 ( P/ N : EAJ60795101) REPLACEMENT MODULE : LGD / LM185WH1-TLD1 ( P/ N : EAJ60796501)
No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Item Type Diagonal Size Active Display area Outline Dimension Aspect Ratio Pixel Number Pixel Pitch Color arrangement Color Depth Electrical Interface Surface Treatment Operating Mode Backlight Unit Response Time Color Gamut
Specification TFT Color LCD Module 18.51 inches( 470.1mm) diagonal 430.4( H) 230.4( V) 430.4( H) x 256.6( V) x 13.0( D) 16: 9 1366 x RGB x 768 0.30( H) x 0.30 (V) RGB vertical Stripe 16.7M color (6bit with A- FRC) LVDS 1Port Hard coating( 3H) & Anti- glare( Haze 25) Normally White 2 CCFL (2 lamps) Rising Time : 1.1 + Falling Time : 3.9 72%
Unit
Remark
mm mm pixel mm Typ. (Without Inverter)
ms
Typ.
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
- M1962D- P(W)ZL : AUO / M185XW01-V2 ( P/ N : EAJ60796501) No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Item Type Diagonal Size Active Display area Outline Dimension Aspect Ratio Pixel Number Pixel Pitch Color arrangement Color Depth Electrical Interface Surface Treatment Operating Mode Backlight Unit Response Time Color Gamut Specification TFT Color LCD Module 18.51 inches(470.1mm) diagonal 430.37( H) 230.4( V) 430.37( H) x 254.6(V) x 16.65( D) 16: 9 1366 x RGB x 768 0.30( H) x 0.30( V) RGB vertical Stripe 16.7M color (RGV 6bit with Hi- FRC) LVDS 1Port Anti- glare( Haze 25) Normally White 2 CCFL (2 lamps) Rising Time : 3.6 + Falling Time : 1.4 72% ms Typ. pixel mm mm mm Typ. (Without Inverter) Unit Remark
5. General specification
5.1 TV
No Item Specification Remarks DTV &Analog- UK,France,Germany,Spain,Sweden,Finland, Italy,Netherland,Belgium,Czech,Luxemburg,Greece, 1 Market EU(PAL Market-26Countries) Denmark,Austria,Hungary,Switzerland,Croatia,Turkey Analog Only -Poland,Portugal,Norway,Bulgaria,Serbia, Slovenia,Russia,Romania 1) PAL-BG 2) PAL-DK 2 Broadcasting system 3) PAL-I/I' 4) SECAM L/L' 5) DVB-T 3 4 5 6 7 8 9 10 11 12 13 14 Receiving system Scart Jack (2EA) Component Input (1EA) CVBS Input (1EA) RGB Input DVI Input HDMI Input (2EA) Audio Input (3EA) SPDIF out (1EA) Earphone out (1EA) USB (1EA) RS-232C (1EA) Analog : Upper Heterodyne Digital : COFDM PAL,SECAM Y/Cb/CrY/Pb/Pr PAL,SECAM,NTSC RGB-PC DVI-D HDMI1-DTV HDMI2-DTV RGB/DVI Audio, Component, CVBS SPDIF out Antenna,AV1,AV2,AV3,Component, RGB,DVI,HDMI1,HDMI2 Picture,Music Software Update +Picture +Music Commercial Mode 4 System(Rear):PAL50,SECAM,NTSC,PAL60 Analog(D-SUB 15Pin) Digital 1ea(Rear),1ea(Side) HDMI version 1.3 Support HDCP / Not support PC L/R Input Scart 1 Jack is Full scart and support RF-OUT(ATV) Scart 2 jack is Half scart and support MNT/DTV-OUT.
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
5.2 RGB
No 1 Item Supported Sync.Type Specification Separate Sync.,Digital Horizontal Analog 2 Operating Frequency Digital Analog Digital Analog Digital Analog Digital 4 5 Input Voltage Inrush Current Operating Condition M1962D M2062D 6 Power S/W On Mode M2262D M2362D M2762D Sleep mode Off mode Vertical Horizontal Vertical Max. Recommend Max. Recommend Max. 3 Resolution Recommend Max. Recommend Max. Recommend Max. Recommend 30~83kHz 56~75 Hz 30~83kHz 56~75 Hz 1360 x 768 @60Hz 1360 x 768 @60Hz 1360 x 768 @60Hz 1360 x 768 @60Hz 1600 x 900 @60Hz 1600 x 900 @60Hz 1600 x 900 @60Hz 1600 x 900 @60Hz 1920 x 1080 @60Hz 1920 x 1080 @60Hz 1920 x1080 @60Hz 1920 x1080 @60Hz M2262D/M2362D/M2762D M2062D M1962D Remark
Voltage :100 ~240 Vac,50 or 60Hz Cold Start :50 A/ Hot :120 A Sync (H/V) On/On On/On On/On On/On On/On On/On On/On On/On On/On On/On Off/On On/Off Off Off Amber Off 1W 0.5W 19"LGD :50,000 Hours(min) 19"AUO :50,000 Hours(min) 20"LGD :50,000 Hours(min) Lamp 20"CMO :40,000 Hours(min) 22"LGD :50,000 Hours(min) 22"AUO :40,000 Hours(min) 23"LGD :50,000 Hours(min) 27"LGD :50,000 Hours(min) RGB / DVI Video Active Active Active Active Active Active Active Active Active Active LED Blue Blue Blue Blue Blue Blue Blue Blue Blue Blue Wattage 40 35 60 50 60 53 65 55 70 63 Max. Typ. Max. Typ. Max. Typ. Max. Typ. Max. Typ.
7
MTBF
50,000 HRS with 90%Confidence level
Life
8 9 10
Using Altitude Operating Environment Storage Environment
5,000 m (for Reliability) 3,000m(for FOS) Temp :10°C ~35°C Humidity :20 %~80 % Temp :-10°C ~60°C non condensing Humidity :5 %~90 %non condensing
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
6. Chroma & Brightness
6.1 M1962D LGD Module
No. Item Right/Left Up/Down 2. 3. Luminance Contrast Ratio Luminance (cd/m2) Variation(%) CR White RED 4. Color Coordinates [CIE 1931] Green Blue Rise Time Decay Time Wx Wy Rx Ry Gx Gy Bx By 5. Response Time TrR TrD Typ -0.03 Specification Min 1. Viewing Angle[CR>10] 70/70 60/70 200 75 700 typ 85/85 75/85 250 1000 0.313 0.329 0.646 0.334 0.303 0.616 0.147 0.067 1.1 3.9 2.6 7.4 Condition : DVI or RGB Standard, Backlight100 Typ +0.03 DVI or RGB - Standard, 6500K - Full White (100IRE) - Backlight 100 Max Full white/ Full black Remark
6.2 M1962D AUO Module
No. Item Right/Left Up/Down 2. 3. Luminance Contrast Ratio Luminance (cd/m2) Variation(%) CR White RED 4. Color Coordinates [CIE 1931] Green Blue Rise Time Decay Time Wx Wy Rx Ry Gx Gy Bx By 5. Response Time TrR TrD Typ -0.03 Specification Min 1. Viewing Angle[CR>10] 150 140 200 75 700 typ 170 160 250 80 1000 0.313 0.329 0.648 0.339 0.292 0.603 0.143 0.070 3.6 1.4 5.7 2.3 Condition : DVI or RGB Standard, Backlight100 Typ +0.03 DVI or RGB - Standard, 6500K - Full White (100IRE) - Backlight 100 Max Full White/ Full black Remark
6.3 Optical Test Condition
- Surrounding Brightness Level : dark - Surrounding Temperature : 25±5°C - warm-up Time :30 Min - Contrast,Brightness : Outgoing condition -.*Incase of Vivid Mode, high level saturation may be occurred. Check gray linearity at standard mode.
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
6.4 Active area
1. Active area of LCD PANEL is in bezel of cabinet. 2. Interval between active area and bezel |A-B| 1.0 mm , |C-D| 1.0 mm A: Interval between left of active area and bezel B: Interval between right of active area and bezel C: Interval between top of active area and bezel D: Interval between bottom of active area and bezel
C Active Area A B
D
Bezel
7. Chroma (PSM : PC Mode-Standard, AV Mode-Vivid)
No 1. 2. 3. 4. 5. Cool Medium Warm 6500k 9300k Item White Balance,X axis White Balance,Y axis White Balance,X axis White Balance,Y axis White Balance,X axis White Balance,Y axis White Balance,X axis White Balance,Y axis White Balance,X axis White Balance,Y axis Min 0.268 0.283 0.280 0.290 0.298 0.314 0.298 0.314 0.268 0.283 Typ 0.283 0.298 0.295 0.305 0.313 0.329 0.313 0.329 0.283 0.298 Max 0.298 0.313 0.310 0.320 0.328 0.344 0.328 0.344 0.298 0.313 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 DQA :±0.015 Measurement Condition PSM :Outgoing condition Input signal :White pattern(85IRE) Pattern number :78 (MSPG series) Remark
8. SET Optical Feature
8.1 General feature
- PC Mode No 1 2 3 4 5 Item Min M1962D M2062D M2262D M2362D M2762D 150 200 200 200 200 Luminance(cd/m2) Typ 180 230 230 230 230 Max Min 500 500 500 500 500 C/R Typ 700 700 700 700 700 RGB &DVI DFC 50000:1(Typ) -Mode :Outgoing condition Input signal :100IRE White pattern (Pattern #4 :MSPG series) Remark
- AV Mode No 1 2 3 4 5 Item M1962D M2062D M2262D M2362D M2762D Luminance(cd/m2) Typ 120 170 170 170 170 Max 150 200 200 200 200 C/R(min) RF,AV,COMPONENT,HDMI 500 500 500 500 500 RF, AV, COMPONENT, HDMI Test Condition Mode :Outgoing condition Input signal : 100IRE White pattern (Pattern #4 : MSPG series) Remark
8.2 Special feature(DFC)
- DFC Working Condition : Full Black Pattern( All Black, No pattern( MSPG Pattern# 2)) signal in D- sub & DVI No 1 Item M1962D/ M2062D/ M2262D/ M2362D/ M2762D Min 40000: 1 Typ 50000: 1 Max Remark PC Mode( D- sub, DVI), Mode : Outgoing condition Input signal : 100 IRE Full white pattern
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LGE Internal Use Only
9. Component Video Input (Y, PB , PR)
No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Specification Resolution 720* 480 720* 480 720* 576 720* 480 720* 480 720* 576 1280* 720 1280* 720 1280* 720 1920* 1080 1920* 1080 1920* 1080 1920* 1080 1920* 1080 1920* 1080 H-freq(kHz) 15.73 15.75 15.625 31.47 31.50 31.25 44.96 45.00 37.50 33.72 33.75 28.125 56.25 67.432 67.5 V-freq(Hz) 59.94 60.00 50.00 59.94 60.00 50.00 59.94 60.00 50.00 59.94 60.00 50.00 50 59.94 60.00 Pixel clock( MHz) 13.500 13.514 13.500 27.000 27.027 27.000 74.176 74.250 74.25 74.176 74.250 74.250 148.5 148.350 148.5 Remark SDTV, DVD 480I( 525I) SDTV, DVD 480I( 525I) SDTV, DVD 576I( 625I) 50Hz SDTV 480P SDTV 480P SDTV 576P 50Hz HDTV 720P HDTV 720P HDTV 720P 50Hz HDTV 1080I HDTV 1080I HDTV 1080I 50Hz, HDTV 1080P HDTV 1080P HDTV 1080P
10. RGB/DVI INPUT (PC)
No. 1 2. 3. 4. 5. 6. 7. 8. 9. Resolution 640* 480 640* 480 800* 600 800* 600 1024 * 768 1024* 768 1280* 768 1280* 800 1360*768 H-freq(kHz) 31.469 37.5 37.879 46.875 48.363 60.123 47.776 49.306 47.712 V-freq(Hz) 59.94 75.0 60.317 75.0 60.0 75.029 59.90 59.91 60.015 Pixel clock(MHz) 25.175 31.5 40.0 49.5 65.0 78.75 79.5 71.0 85.5 Remark
10.1
EDID Data (Product ID : 19390)
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LGE Internal Use Only
10.2
EDID Data (Product ID : 19391)
11. HDMI INPUT(DTV)
No. 1 2 3 4 5 6 7 8 9 10 Resolution 720* 480 720* 576 1280* 720 1280* 720 1920* 1080 1920* 1080 1920* 1080 1920* 1080 1920* 1080 1920* 1080 H-freq(kHz) 31.469 / 31.5 31.25 37.500 44.96 / 45 33.72 / 33.75 28.125 27 33.75 56.250 67.43 / 67.5 50 50 59.94 / 60 59.94 / 60 50.00 24 30.00 50 59.94 / 60 V-freq(Hz) 59.94 / 60 Pixel clock(MHz) 27.00/ 27.03 27.864 74.25 74.17/ 74.25 74.17/ 74.25 74.25 74.25 74.25 148.5 148.35/ 148.50 SDTV 480P SDTV 576P HDTV 720P HDTV 720P HDTV 1080I HDTV 1080I HDTV 1080P HDTV 1080P HDTV 1080P HDTV 1080P Remark
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
ADJUSTMENT INSTRUCTION
1. Application
This document is applied to LD93A chassis 19/20/22/23/27" LCD Monitor TV which is manufactured in TV (or Monitor) Factory or is produced on the basis of this data.
(1) (3)
2. Designation
2.1 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. 2.2. Power Adjustment: Free Voltage 2.3. Magnetic Field Condition: Nil. 2.4. Input signal Unit: Product Specification Standard 2.5. Reserve after operation: Above 5 Minutes (Heat Run) Temperature : at 25°C ± 5°C Relative humidity : 65 ±10% Input voltage : 220V, 60Hz 2.6. Adjustment equipment: Color Analyzer (CA-210 or CA110), Pattern Generator (MSPG-925L or Equivalent), DDC Adjustment Jig equipment, SVC remote controller 2.7. Don't push The "IN STOP KEY" after completing the function inspection.
(2) OK
Please Check the Speed : To use speed between from 200KHz to 400KHz
4. Click "Read" tab, and then load download file(XXXX.bin) by clicking "Read"
(4)
filexxx.bin
3. Tool Option
Model M1962D-P(W)ZL M2062D-P(W)ZL M2262D-P(W)ZL M2362D-P(W)ZL M2762D-P(W)ZL Module LGD AUO LGD CMO LGD/AUO LGD LGD/CMO Tool option 4301 37069 4557 20941 4813 / 37581 5069 5325 / 21709 5. Click "Auto" tab and set as below 6. Click "Run". 7. After downloading, check "OK" message.
(5) filexxx.bin
(6)
4. Main PCB check process
· APC - After Manual-Insult, executing APC
(7)
(8) ..........OK
4.1 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" message. If display "Error", Check connect computer, jig, and set. 3. Click "Connect" tab. If display "Can't ", Check connect computer, jig, and set.
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
4.2 DOWNLOAD USB
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"
4.3 ADC Process
EZ ADJUST
1. Tool Option : 1229 2. ADC CALIBRATION External : DTV 3. ADC CALIBRATION Internal 4. ADC ADJUST 5. W/B ADJUST 6. WHITE PATTERN : OFF 7. EDID D.L
Tool Option Model Name Inch Tool DSUB Port Media Player HDMI Type OK to Download DOWNLOAD: : : : : : : : 1229 M2794DP-PZ 27 Mx94DP RGB 0 (NEW) EMF-PM 3-HDMI
!
4. Updating is staring.
4.3.1 ADC Calibration Internal : ADC is executed automatically using internal pattern. - If ADC is executed by ADC Calibration Internal, RGB and Component is executed at the same time. · Remove the all input jack from set. · Press the ADJ KEY on R/C and enter EZ ADJUST. · Press "Power only" key of service remocon.(Baud rate : 115200 bps). · Select "3. ADC CALIBRATION Internal" by using / (CH +/-) and press ENTER( ). · Select "Start" and press navigation key( ). · ADC Calibration Internal is executed automatically. · Press EXIT key on R/C 4.3.2 ADC Calibration External
( If ADC calibration had done in internal process, It doesn't need to use this process.) 1) Auto RGB Gain/Offset Adjustment · Convert to PC in Input-source · Signal equipment displays Output Voltage: 700 mVp-p Impress Resolution XGA (1024 x 768 @ 60Hz) Model : 60 in Pattern Generator Pattern : 29 in Pattern Generator (MSPG-925 SERISE) Adjustment pattern (PC )
5. Updating Completed, The TV will restart automatically. 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.
* After downloading, have to adjust TOOL OPTION again.
1. Push "ADJ" key in service remote controller 2. Select "1.Tool Option" and Push "OK" button 3. Punch in the number. (Each model has their number.) 4. Completed selecting Tool option · Press the ADJ KEY and then select "2.ADC CALIBRATION External" by using / (CH +/-) and press ENTER( ).
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
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LGE Internal Use Only
1-1) Confirmation · We confirm whether "0xAA (RGB)" address of EEPROM "0xA2" is "0xAA" or not. · If "0xAA (RGB)" address of EEPROM "0xA2" isn't "0xAA", we adjust once more · We can confirm the ADC values from "0xA4~0XA9 (RGB)" addresses in a page "0xA2" *Manual ADC process using Service Remocon. After enter Service Mode by pushing "ADJ" key, execute "4.ADC Adjust" by pushing " " key at "ADC CALIBRATION: RGB".
EZ ADJUST
1. Tool Option : 1261 2. ADC CALIBRATION External : Component 3. ADC CALIBRATION Internal 4. ADC ADJUST 5. W/B ADJUST 6. WHITE PATTERN : OFF 7. EDID D.L
4.4 Function Check
1) Check display and sound · Check Input and Signal items. (cf. work instructions) 1. TV 2. AV (SCART1/SCART2/CVBS) 3. COMPONENT (1080i) 4. RGB (PC : 1360 x 768 @ 60Hz M1962D) (PC : 1600 x 900 @ 60Hz M2062D) (PC : 1920 x 1080 @ 60hz M2262D&M2362D/M2762D) 5. DVI (PC : 1360 x 768 @ 60Hz M1962D) (PC : 1600 x 900 @ 60Hz M2062D) (PC : 1920 x 1080 @ 60hz M2262D&M2362D/M2762D) 6. HDMI 7. PC Audio In * Display and Sound check is executed by Remote controller.
4. ADC ADJUST
MODE R-GAIN G-GAIN B-GAIN R-OFFSET G-OFFSET B-OFFSET : RGB : 115 : 114 : 114 : 137 : 131 : 137
5. Total Assembly line process
5.1 Adjustment Preparation
· W/B Equipment condition CA210: CH 9, Test signal: Inner pattern (85IRE) · Above 5 minutes H/run in the inner pattern. ("power on" key of adjust remote control) · 15 Pin D-Sub Jack is connected to the AUTO W/B EQUIPMENT.
Cool Color Temperature 9,300k
oK
2) Component Gain/Offset Adjustment · Convert to Component in Input-source · Signal equipment displays Impress Resolution 1080i MODEL: 223 in Pattern Generator(1080i Mode) PATTERN: 65 in Pattern Generator(MSPG-925 SERISE)*
X=0.285 (±0.003) Y=0.293 (±0.003) X=0.295 (±0.003) Y=0.305 (±0.003) X=0.313 (±0.003) Y=0.329 (±0.003) Typ : 170 Typ : 170 Typ : 170 Typ : 220 Typ : 220 Typ : 220 M2062D M2262D M2362D M2762D M1962D M1962D M2062D M2262D M2362D M2762D
Inner pattern
Medium
8,000k
oK
(216gray,85IRE)
Warm Cool Medium Luminance (cd/m2) Warm Cool Medium Warm
6,500k Min : 120 Min : 120 Min : 120 Min : 170 Min : 170 Min : 170
oK
Inner pattern
(216gray,85IRE)
Adjustment pattern (COMPONENT ) · Press the ADJ KEY and then select "2.ADC CALIBRATION External" by using / (CH +/-) and press ENTER( ).
· Adjust Process will start by execute I2C Command (Inner pattern (0xF3, 0xFF). * Caution Color Temperature: COOL, Medium, Warm One of R Gain/G Gain/ B 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)
2-1) Confirmation · We confirm whether "0xB3 (480i)/0xBC (1080i)" address of EEPROM "0xA2" is "0xAA" or not. · If "0xB3 (480i)/0xBC(1080i)" address of EEPROM "0xA2" isn't "0xAA", we adjust once more · We can confirm the ADC values from "0xAD~0XB2 (480i)/0XB6~BB (1080i)" addresses in a page "0xA2" *Manual ADC process using Service Remocon. After enter Service Mode by pushing "ADJ" key, execute "ADC Adjust" by pushing " "key at "ADC CALIBRATION :COMPONENT". Impress Resolution 1080i
EZ ADJUST
1. Tool Option : 1229 2. ADC CALIBRATION External : DTV 3. ADC CALIBRATION Internal 4. ADC ADJUST 5. W/B ADJUST 6. WHITE PATTERN : OFF 7. EDID D.L
Tool Option Model Name Inch Tool DSUB Port Media Player HDMI Type OK to Download DOWNLOAD: : : : : : : : 1229 M2794DP-PZ 27 Mx94DP RGB 0 (NEW) EMF-PM 3-HDMI
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 15 -
LGE Internal Use Only
5.2 W/B condition
- Surrounding Temperature : 20 % ~ 80 % - Surrounding Temperature : 25±5 °C - warm-up Time : Under 5 Min * Manual W/B process using adjusts Remote control. · After enter Service Mode by pushing "ADJ" key, · Enter White Pattern off of service mode, and change off -> on. · Enter "W/B ADJUST" by pushing " " key at "5. W/B ADJUST".
EZ ADJUST
. ADC CALIBRATION . ADC ADJUST . SUB B/C ADJUST . W/B ADJUST . WHITE PATTERN . 2HOUR OFF : DTV
MODE TEMPERATURE R-GAIN G-GAIN B-GAIN : DTV : : : : Cool 192 192 192
5.6 DDC EDID Write (HDMI 256Byte)
· Connect HDMI Signal Cable to HDMI Jack. · Write EDID DATA to EEPROM(24C02) by using DDC2B protocol. · Check whether written EDID data is correct or not.
5.7 Serial number (RS-232C)
· press "Power on" key of service remocon.(Baud rate : 115200 bps) · Connect RS232 Signal Cable to RS-232 Jack. · Write Serial number by use RS-232. · Must check the serial number at the Diagnostics of SET UP menu. (Refer to below).
: Off : Off
R-OFFSET G-OFFSET B-OFFSET COPY ALL
: 128 : 128 : 128
* After done all adjustments, Press "In-start" button 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. * Don't push The "IN STOP KEY" after completing the function inspection. * When doing Adjustment, Please make circumstance as below.
5.8 EDID DATA
· EDID download 1) Press "Power only" key of service remocon.(Baud rate : 115200 bps). 2) Press the ADJ KEY on R/C and enter EZ ADJUST 3) Select "7.EDID D/L" by using / (CH +/-) and press ENTER( ). 4) Select "Start" and press navigation key( ). 5) EDID download is executed automatically. 6) Press EXIT key on R/C.
EZ ADJUST
7. EDID D/L RGB HDMI 1 HDMI 2 DVI Start Reset : : : : OK OK OK OK
5.3 DPM operation confirmation
Check if Power LED Color and Power Consumption operate as standard. · Set Input to RGB and connect D-sub cable to set · Measurement Condition: (100~240V@ 50/60Hz) · Confirm DPM operation at the state of screen without Signal
1. Tool Option : 1261 2. ADC CALIBRATION External : Component 3. ADC CALIBRATION Internal 4. ADC ADJUST 5. W/B ADJUST 6. WHITE PATTERN : OFF 7. EDID D.L
5.4 DDC EDID Write (RGB 128Byte )
· Connect D-sub Signal Cable to D-Sub Jack. · Write EDID DATA to EEPROM (24C02) by using DDC2B protocol. · Check whether written EDID data is correct or not.
5.5 DDC EDID Write (DVI 128Byte )
· Connect DVI-D Signal Cable to DVI Jack. · Write EDID DATA to EEPROM (24C02) by using DDC2B protocol. · Check whether written EDID data is correct or not.
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 16 -
LGE Internal Use Only
Check P1101 All Voltage Level (15V, 5V) Replace Power board Y N Replace IC1102
N Check Power connector OK ?
N
Check IC1102 Output Voltage Level (3.3V) Y N Replace IC1104 & Recheck
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
Check IC1104 output Voltage Level (1.8V) Y N Replace IC1105
Check IC1105 Output Voltage Level (12V) Y N Replace IC1107 & Recheck
TROUBLESHOOTING
1. Power- Up Boot Fail Trouble Shooting
- 17 -
Check IC1107 output Voltage Level (5V) Y N Replace X101
Check X101 Clock 12MHz Y
Replace IC105 Flash Memory
Wave form of X101
LGE Internal Use Only
Check P1101(#9) INV_ON high Check GPIO Path (Refer to Appendix 1.)
N
Y
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
1. Check Power Board, 15V 2. Check IC1107 Output voltage(5V) 3. Check P1103(#1,2,3) 5V N 1. Replace Power Board 2. Replace IC1107
Y
N IC100 has problem
2. No OSD Trouble Shooting
- 18 -
Check P1103 #13, #14, #25, #26
Y Y Replace Cable
Check LVDS Cable for damage or open conductors.
N
Check LCD Module Control board (Refer to Module CAS)
LGE Internal Use Only
Check RF Cable
Y N Replace Q1105
Check Tuner 5V Power & Q1105 5V
Y Bad Tuner. Replace Tuner. Yellow none N Maybe Tuner(IC500) has problems
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
Check LD500 color
None
Check TP Clock, Data, Sync R521, R532, R533
3. Digital TV Video Trouble Shooting
- 19 N N
Wave form of X500
Y Replace X500 Replace X501
Check Demodulator Input Clock X500 (31.875MHz), X501(20.48MHz)
Y Replace IC100 has problems
Check P1103 #13, #14, #25, #26
Y
Check LCD Module Control board Refer to Module CAS
LGE Internal Use Only
Check input signal format Is it supported?
Y
Wave form of Comp Y Wave form of Comp Pb Wave form of Comp Pr
Check Component Cable
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
Y N Replace JK700 or Check Device
Check JK700
Y
4. Component Video Trouble Shooting
- 20 N Check R164,R144,R145 C121,C122,C123
Wave form of C121
Check signal C121,C122,C123
Y
IC100 has problem
Wave form of C122
Wave form of C123
LGE Internal Use Only
Check input signal format Is it supported?
Y
Check RGB Cable connector for damage
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
Y N Replace JK703
Check JK703
Y
5. RGB Video Trouble Shooting
- 21 N Replace R729, R730 N Replace R158,R160,R162, C115,C117,C119
Wave form of R158/C115 Wave form of R160/C117
Check signal, Hsync, Vsync (R729, R730)
Y
Wave form of R730(Vsync)
Wave form of R729(Hsync)
Check signal RGB (R158,R160,R162 C115,C117,C119)
Y
IC100 has problem
Wave form of R162/C119
LGE Internal Use Only
Check input signal format Is it supported? Y
Check AV Cable for damage or open connector Y
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
N Replace R771
Check signal R771(AV_CVBS) Y
6. AV Video Trouble Shooting
- 22 -
Check signal R164, R144, R155, C121, C122, C123 N Y
Replace R164, R144, R155, C121, C122, C123
IC100 has problem
Wave form of R771(CVBS)
LGE Internal Use Only
Check input signal format Is it supported? Y
Check HDMI Cable for damage or open connector Y N
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
Check JK900 / JK901 for proper connection or damage Y N
Replace connector
7.HDMI Video Trouble Shooting
- 23 -
Check EDID NVRAM (IC902,IC903) Power & I2C Signal (#5, #6) Y N
Redownload EDID data or Replace IC901/IC902
Check HDCP Key NVRAM (IC102) Power & I2C Signal (#5, #6) Y
Replace IC102
Replace Mstar(IC100)
LGE Internal Use Only
Make sure you can't hear any audio and Device support the audio signal normally. Y
Check Speaker and its wire connection (P1000) And the resistance N Replace connector or Speaker Y
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
Check 15V From Power board (P1101, Pin#1,2) And Check Audio Amp Power 12V (IC1000) N Y
8. All Source Audio Trouble Shooting
- 24 -
Replace Power Board or Check L1002/ L1003
Check Signal from IC1000 L104, L105, L106, L107 Y
N
Replace IC1000
Check Signal from IC101 (R1008, R1009, R179, R180)
N
LGE Internal Use Only
Replace IC100
SC2_L/R_IN SC2_CVBS_IN DTV/MNT_V_OUT DTV/MNT_L/R_OUT TV_L/R_OUT HDCP Key RESET SYSTEM_I2C KIA7427 (IC105) 24C512 (IC101) 24C08 (IC102)
DTV/MNT_L/R_OPOUT
LM324D (IC600)
SCART
SPI Flash Memory 16MB (IC104) DDR DDR Memory 512Mbx2 (IC300/1) LCD Panel (P402) 19" : 1366x768 20" : 1600x900 22" : 1920x1080 23" : 1920x1080 27" : 1920x1080
TV_L/R_OPOUT
SC1_CVBS_IN SC1_L/R_IN
SC1_R/G/B
SC1_TV_VOUT
COMP_Y/Pb/Pr
TV_CVBS+
Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
I2C_D_TU LVDS
Component
SIF+
COMP_L/R_IN
MSD237HFG
(Saturn4)
(IC100) KEY1/2 LED_RED/Light SENSE IR / H.P JACK
P401 P402
Tuner
XC5000 (IC500) DRX3913K-XK (IC501) TU_TS_DATA/TU_ERROR
I2C_D_TU
BLOCK DIAGRAM
- 25 DDC_I2C/UART DSUB_R/G/B/H/V USB_DM/DP RS232C_TX/RX TS_Parallel TS_Serial PCM_DATA PCM_ADD PCM_CD_ON
DTV_IF_P/N H/phone_L/R_OUT TPA6132 (IC1002) SP (L) SPK_L/R_OUT TAS5709 (IC1000) SP (R)
DSUB
24C02
USB
RS232
MAX3232 (IC700)
J1000 SPDIF_OUT
PC Audio IN DVI-D DVI24C02 HDMI_TMDS HDMI_I2C 24C02 HDMI_TMDS HDMI_I2C DVI_TMDS
OPTIC I/O Expander (for Input Detection) I2C_EXPANDER
HEADPHONE_DET S-VIDEO_DET COMP_DET CI Slot (P800) CVBS_DET USB_OCD CI_CD_1/2 74LVC541A (IC800) SCART1_DET SCART2_DET MSG1040 (IC103)
PC_L/R_IN
Composite
HDMI2_Side
24C02
CVBS_V/L/R_IN
HDMI1_Rear
LGE Internal Use Only
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.
400
520
910
LV1
800
A2
540
550
200
120
501
500
302
122
530
300
Copyright LG Electronics. Inc. All right reserved. Only for training and service purposes
301
510
511
810
900
- 26 -
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only