LG 24MT48DF Service Manual Download Page 15 | Manualshive

Page: 15 / 22

background image

- 15 -

LGE Internal Use Only

Copyright ©

LG Electronics. Inc. All right reserved.

Only for training and service purposes

TROUBLE SHOOTING

1. No Power

Replace X200

N

Check C400

Voltage Level (19V)

Check Power connector

OK ?

Replace Adapter

Y

N

Y

Check IC1001

Output(#16)

Voltage Level (3.3V)

Replace IC1001 &

Recheck

Y

N

Check X200 Clock

24MHz

Replace IC100 Flash

Memory

Y

Check IC403 Output

Voltage Level (5V)

Replace IC403 &

Recheck

Y

N

Check IC402 Output

Voltage Level (1.15V)

Replace IC402 &

Recheck

N

Y

«
...
13
14
15
16
17
...
»

Summary of Contents for 24MT48DF

Page 1: ...L CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL MFL69169516 1604 REV01 24MT48DF 24MT48DF PZ 24MT48DW 24MT48DW WZ 24MT48VF 24MT48VF PZ 24MT48VW 24MT48VW WZ 24MT48DG 24MT48DG BZ LD60A LED TV ...

Page 2: ...LG Electronics Inc All right reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 15 BLOCK DIAGRAM 20 EXPLODED VIEW 21 ...

Page 3: ... 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 ...

Page 4: ...n 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 b...

Page 5: ...e 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...

Page 6: ... Finland Nether lands Belgium Luxemburg Greece Denmark Czech Austria Hungary Swiss Croatia Turkey Norway Slovenia Poland Ukraine Portugal Ireland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia Slovakia Bosnia Serbia Albania Kazakhstan Belarus DTV MPEG2 4 DVB T2 8 countries UK Denmark Sweden Finland Norway Ireland Ukraine Ka zakhstan DTV MPEG2 4 DVB C 37 countries UK Italy Germany France S...

Page 7: ...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 symbol rate 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...

Page 8: ...8 60 023 75 029 78 750 8 1280 800 49 702 59 810 83 500 9 1366 768 47 717 59 79 85 5 HDMI DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Remark 1 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 2 720 576 31 25 50 00 27 864 SDTV 576P 3 1280 720 37 50 50 00 74 250 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 108...

Page 9: ...nload file XXXX bin by clicking Read 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message USB DOWNLOAD epk file download 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...

Page 10: ...ernal Data 3 2 1 EDID HDMI Checksum 95 7E 3 3 Function Check 3 3 1 Check display and sound Check Input and Signal items cf work instructions 1 TV DTV RF Satellite Satellite model 2 AV SCART CVBS 3 COMPONENT 480i 4 HDMI1 2 MT58 22MT48 PC 1920 x 1080 60Hz 24 28 29MT48 PC 1366 x 768 60Hz 5 RGB PC 1920 x 1080 60Hz 6 PC Audio In 7 Headphone Out 8 USB Display and Sound check is executed by Remote contro...

Page 11: ...or the others check the back light on Auto adjustment Map using RS 232C to USB cable RS 232C COMMAND CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End RS 232C COMMAND CMD ID DATA M I N CENTER DEFAULT M A X Cool Mid Warm Cool Mid Warm R Gain jg Ja jd 00 172 192 192 254 G Gain jh Jb je 00 172 192 192 192 B Gain ji Jc jf 00 192 192 172 254 R Cut 64 64 64 128 G Cut 64 64 64 128 B Cut...

Page 12: ...inish 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 cor rect it to the model s module from factory JIG model Push The IN STOP KEY after completing the function inspection And Mechanical Power Switch must be set ON 4 2 DPM test M...

Page 13: ...lways There is impossible to download by bar code scan so It need Manual download 1 Press the Instart key of ADJ remote control 2 Go to the menu Model Number D L like below photo 3 Input the Factory model name ex 27MT58DF PZ or Serial number like photo 4 Check the model name Instart menu Factory name displayed ex 27MT58DF PZ 5 Check the Diagnostics DTV country only Buyer model displayed ex 27MT58D...

Page 14: ...ey value in LG set 1 Check the method of CI Key value a Check the method on Instart menu 2 Check the method of CI key value RS232 a Into the main ass y mode RS232 aa 00 00 b Check the mothed of CI key by command RS232 ci 00 20 c Result value OKx CI Key Download OK NGx CI Key Download NG CMD 1 CMD 2 Data 0 A A 0 0 CMD 1 CMD 2 Data 0 C I 1 0 ...

Page 15: ...r Replace X200 N Check C400 Voltage Level 19V Check Power connector OK Replace Adapter Y N Y Check IC1001 Output 16 Voltage Level 3 3V Replace IC1001 Recheck Y N Check X200 Clock 24MHz Replace IC100 Flash Memory Y Check IC403 Output Voltage Level 5V Replace IC403 Recheck Y N Check IC402 Output Voltage Level 1 15V Replace IC402 Recheck N Y ...

Page 16: ...k Light On Check IC1001 Q1002 Replace LED Driver IC or FET Y N N Check Panel Power 5V P602 1 Check IC403 Output 5V Replace IC403 Recheck Y N Check Panel input Clock P602 10 11 Check IC101 Repair Main B D Y N Check FFC Cable for Damage or Open Conductors Check LED Driver Output C1024 Replace T Con Board or Module Y Check IC101 Replace Main SOC N Check WLED_ENABLE High Y ...

Page 17: ... Light On Check IC1001 Q1002 Replace LED Driver IC or FET Y N N Check Panel Power 12V P600 30 Check IC400 Output 12V Replace IC400 Recheck Y N Check Panel input Clock P600 9 10 Check IC101 Repair Main B D Y N Check FFC Cable for Damage or Open Conductors Check LED Driver Output C1024 Replace T Con Board or Module Y Check IC101 Replace Main SOC N Check WLED_ENABLE High Y ...

Page 18: ...ht reserved Only for training and service purposes 3 No Video Digital TV Check RF Cable Y 1 Check RF IC L3704 Power 3 3V 2 Check IC1001 Output voltage 3 3V Replace IC1001 Recheck Y N Check SCL SDA Line TU3702 TU3703 1 2 Replace TU3702 TU3703 or IC101 Main Scaler N ...

Page 19: ...ining and service purposes 4 No Video HDMI Replace Main Scaler IC101 Check input signal format Is it supported Check JK800 JK801 for proper connection or Damage Replace Connector Y N Check I2C Signal JK800 JK801 Re Download EDID Data Y N Y Check HDMI Cable for Damage or Open Connector Y ...

Page 20: ...DATA 0 7 PCM_A 0 7 CI_ADDR 0 14 REG CI_OE CI_IORD CI_IOWR CI WE PCM_A 0 14 FE_DE_SDA SCL SERIAL Flash CVBS TV L R Sound F_RB PF OE PF_CEO SPI_CK SPI_CI SPI_CS SPI_DO System EEPROM EEPROM SCL SDA Panel Digital amp BM28720MUV SP L SP R Audio_ Master_CLK DATA 3 LVDS SIF HP L R H P Country Option DVB only AMP SCL SDA CVBS XTAL 24MHz TMDS 148 5MHz Country Option Country Option DVB only HDMI2 HDMI_TMDS ...

Page 21: ...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 IMPORTANT SAFETY...

Page 22: ......

Reviews:

No comments

Related manuals for 24MT48DF

Brand: Samsung Pages: 2

HTX25S31, HTX29S31S, HTX34S31

Brand: Haier Pages: 9

Brand: Samsung Pages: 8

Brand: Samsung Pages: 258

CT27E33 - 27" TV

Brand: Panasonic Pages: 81

Brand: Magnavox Pages: 8

Brand: Walker Pages: 31

Brand: TCL Pages: 20

Brand: Vizio Pages: 26

VL260M - Full HD 1080p LCD HDTV

Brand: Vizio Pages: 2

Brand: AOC Pages: 114

Brand: TD Systems Pages: 20

Brand: Majestic Pages: 25

Brand: SunBriteTV Pages: 40

Brand: SunBriteTV Pages: 36

Brand: RCA Pages: 56

Aquos LC 10A3US

Brand: Sharp Pages: 1

Brand: Sharp Pages: 43

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands