LG M2262D Service Manual Download Page 24

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LGE Internal Use Only

8. All Source Audio Trouble Shooting

Make

sure

can’t

hear

any

udi

and Device support the audi

o signal

normally

Check Speaker and it

s w

ire

connection (P1000)

the resistance

Check Sig

nal from IC1000

L104, L105, L106, L107

Replace IC1000

Check 15V

From Pow

r board

(P1101, Pin#1,2)

Check Aud

Amp Pow

r 12V

C1000)

Replace

Board

Check

L1002/ L1003

Check Signal from IC101

(R1008, R1009, R179, R180)

Replace IC100

Replace con

ector or Speaker

Summary of Contents for M2262D

Page 1: ...SSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LD93A MODEL M2262D M2262D PZL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only P NO MFL49414524 0907 REV00 Printed in Korea ...

Page 2: ...cs Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 CONTENTS CONTENTS 2 PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 13 TROUBLE SHOOTING 17 BLOCK DIAGRAM 25 EXPLODED VIEW 26 SVC SHEET ...

Page 3: ...d 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...

Page 4: ... 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...

Page 5: ...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 replac...

Page 6: ...M 5 The receiver must be operated for about 20 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 specification 4 Electrical Specification 4 1 Module Specification Model Market Appliance Safety IEC EN60065 Mx62D EU EMI EN55013 PAL Market EMS EN55020 No Item Specification Unit Remark 1 Type TF...

Page 7: ... Input 2EA HDMI1 DTV 1ea Rear 1ea Side HDMI2 DTV HDMI version 1 3 Support HDCP Not support PC 10 Audio Input 3EA RGB DVI Audio Component CVBS L R Input 11 SPDIF out 1EA SPDIF out 12 Earphone out 1EA Antenna AV1 AV2 AV3 Component RGB DVI HDMI1 HDMI2 13 USB 1EA Picture Music Software Update Picture Music 14 RS 232C 1EA Commercial Mode 5 General specification 5 1 TV No Item Specification Unit Remark ...

Page 8: ...oltage 100 240 Vac 50 or 60Hz 5 Inrush Current Cold Start 50 A Hot 120 A Operating Condition Sync H V Video LED Wattage On On Active Blue 50 Max M1962D On On Active Blue 40 Typ On On Active Blue 60 Max M2062D On On Active Blue 50 Typ 6 Power On On On Active Blue 60 Max S W Mode M2262D On On Active Blue 53 Typ On On Active Blue 60 Max M2362D On On Active Blue 55 Typ On On Active Blue 120 Max M2762D...

Page 9: ...x 0 313 Wy 0 329 RED Rx Typ 0 618 Typ DVI or RGB 4 Color Coordinates Ry 0 03 0 309 0 03 Vivid 6500K CIE 1931 Green Gx 0 252 Full White 100IRE Gy 0 573 Backlight 100 Blue Bx 0 113 By 0 040 Rise Time TrR 3 8 5 5 Condition DVI or RGB 5 Response Time Decay Time TrD 1 2 2 5 Standard Backlight100 6 2 M2262D LGD Module No Item Specification Remark Min typ Max 1 Viewing Angle CR 10 Right Left 70 70 85 85 ...

Page 10: ... White Balance Y axis 0 314 0 329 0 344 DQA 0 015 5 9300k White Balance X axis 0 268 0 283 0 298 DQA 0 015 White Balance Y axis 0 283 0 298 0 313 DQA 0 015 7 Chroma PSM PC Mode Standard AV Mode Vivid No Item Luminance cd m2 C R min Remark Typ Max RF AV COMPONENT HDMI 1 M1962D 120 150 500 RF AV COMPONENT HDMI 2 M2062D 170 200 500 Test Condition 3 M2262D 170 200 500 Mode Outgoing condition 4 M2362D ...

Page 11: ... 59 94 74 176 HDTV 1080I 11 1920 1080 33 75 60 00 74 250 HDTV 1080I 12 1920 1080 28 125 50 00 74 250 HDTV 1080I 50Hz 13 1920 1080 56 25 50 148 5 HDTV 1080P 14 1920 1080 67 432 59 94 148 350 HDTV 1080P 15 1920 1080 67 5 60 00 148 5 HDTV 1080P 9 Component Video Input Y PB PR 10 RGB DVI INPUT PC 10 1 EDID Data Product ID 22349 No Resolution H freq kHz V freq Hz Pixel clock MHz Remark 1 720 400 31 468...

Page 12: ...20 576 31 25 50 54 SDTV 576P 3 1280 720 37 500 50 74 25 HDTV 720P 4 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17 74 25 HDTV 1080I 6 1920 1080 28 125 50 00 74 25 HDTV 1080I 7 1920 1080 26 97 23 23 97 24 74 17 74 25 HDTV 1080P 8 1920 1080 33 716 33 75 29 976 30 00 74 25 HDTV 1080P 9 1920 1080 56 250 50 148 5 HDTV 1080P 10 1920 1080 67 43 67 5 59 94 60 148 3...

Page 13: ...nalyzer CA 210 or CA 110 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 3 Tool Option 4 Main PCB check process APC After Manual Insult executing APC 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...

Page 14: ...on 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 ...

Page 15: ...z 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 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 AUT...

Page 16: ...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 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 cor...

Page 17: ...K Replace Power board N N Check IC1104 output Voltage Level 1 8V Replace IC1104 Recheck N Check X101 Clock 12MHz Replace X101 N Replace IC105 Flash Memory Check IC1102 Output Voltage Level 3 3V Replace IC1102 N Y Wave form of X101 Check IC1107 output Voltage Level 5V Replace IC1107 Recheck N Check IC1105 Output Voltage Level 12V Replace IC1105 N Y Y Y Y Y 1 Power Up Boot Fail Trouble Shooting ...

Page 18: ... has problem Check LVDS Cable for damage or open conductors Check LCD Module Control board Refer to Module CAS Y N Y Replace Cable N Y 1 Check Power Board 15V 2 Check IC1107 Output voltage 5V 3 Check P1103 1 2 3 5V 1 Replace Power Board 2 Replace IC1107 N Check P1101 9 INV_ON high Check GPIO Path Refer to Appendix 1 N Y 2 No OSD Trouble Shooting ...

Page 19: ... problems N Y Check LD500 color Bad Tuner Replace Tuner None Yellow none Check Demodulator Input Clock X500 31 875MHz X501 20 48MHz Replace X500 Replace X501 N Y Check LCD Module Control board Refer to Module CAS Wave form of X500 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 19 3 Digital TV Video Trouble Shooting ...

Page 20: ...o Trouble Shooting Check input signal format Is it supported Check signal C121 C122 C123 Check R164 R144 R145 C121 C122 C123 Y N Check JK700 Replace JK700 or Check Device Y N Y IC100 has problem Y Check Component Cable Wave form of C121 Wave form of C122 Wave form of C123 Wave form of Comp Y Wave form of Comp Pb Wave form of Comp Pr ...

Page 21: ...at Is it supported Check signal Hsync Vsync R729 R730 Replace R729 R730 Check signal RGB R158 R160 R162 C115 C117 C119 Y N Check JK703 Replace JK703 Y N Y Replace R158 R160 R162 C115 C117 C119 N IC100 has problem Y Check RGB Cable connector for damage Y Wave form of R730 Vsync Wave form of R729 Hsync Wave form of R160 C117 Wave form of R158 C115 Wave form of R162 C119 ...

Page 22: ...nternal Use Only 6 AV Video Trouble Shooting Check input signal format Is it supported Check signal R164 R144 R155 C121 C122 C123 Replace R164 R144 R155 C121 C122 C123 Y N Check signal R771 AV_CVBS Replace R771 Y N Y IC100 has problem Check AV Cable for damage or open connector Y Wave form of R771 CVBS ...

Page 23: ... Check input signal format Is it supported Y Check JK900 JK901 for proper connection or damage Replace connector Y N Y Check HDMI Cable for damage or open connector Check EDID NVRAM IC902 IC903 Power I2C Signal 5 6 Redownload EDID data or Replace IC901 IC902 Y N Check HDCP Key NVRAM IC102 Power I2C Signal 5 6 Replace IC102 Y N Replace Mstar IC100 ...

Page 24: ...and Device support the audio signal normally Check Speaker and its wire connection P1000 And the resistance Check Signal from IC1000 L104 L105 L106 L107 Y Replace IC1000 N Check 15V From Power board P1101 Pin 1 2 And Check Audio Amp Power 12V IC1000 Y Replace Power Board or Check L1002 L1003 N Y Check Signal from IC101 R1008 R1009 R179 R180 Y Replace IC100 N Replace connector or Speaker N ...

Page 25: ...N SC1_TV_VOUT DTV MNT_V_OUT SC1_L R_IN TV_L R_OUT DTV MNT_L R_OPOUT LCD Panel P402 19 1366x768 20 1600x900 22 1920x1080 23 1920x1080 27 1920x1080 RESET SYSTEM_I2C TS_Serial TPA6132 IC1002 H phone_L R_OUT Tuner Tuner 24C02 24C02 SPI DDR DDC_I2C UART J1000 SPDIF_OUT OPTIC SCART SCART Component Component DSUB DSUB USB USB RS232 RS232 DVI DVI D D HDMI1_Rear HDMI1_Rear HDMI2_Side HDMI2_Side MSG1040 IC1...

Page 26: ...cal 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 ...

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