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LCD MONITOR

Model : KT-LL84ULFX-PD

Written date: Jun 06, 2015

Composed by: Roy Yeom in KORTEK

SERVICE MANUAL

Содержание KT-LL84ULFX-PD

Страница 1: ...LCD MONITOR Model KT LL84ULFX PD Written date Jun 06 2015 Composed by Roy Yeom in KORTEK SERVICE MANUAL ...

Страница 2: ...Service Manual REV 0 1 2 REVISION HISTORY REVISION DATE NOTE REV0 1 Jun 06 2015 1st issued ...

Страница 3: ...ify the set without prior permission of the manufacturer A risk of fire or electric shock can result 5 Leave the maintenance service to a service engineer having qualification knowledge and experience A risk of electric shock injury or fire can result 6 Always employ genuine parts indicated in the service manual for replacement A risk of fire or electric shock can result 7 Confirm the connection o...

Страница 4: ...justment of monitor Repair completion Confirmation of monitor version Serial No Confirmation of defective parts Replacement of defective parts Were A D B D replacement Was other parts replacement Inspection of monitor 1 SERIAL NUMBER INFORMATION 2 TROUBLE SHOOTING Electric parts Yes 5 INSPECTION PROCEDURES What are replacement parts ...

Страница 5: ...uploading parts Old Firmware A D BOARD SCALER Latest Firmware For the detail see the separate description Confirmation of monitor version Serial No Inspection of monitor 5 INSPECTION PROCEDURES 4 CALIBRATION and ADJUSTMENT Update according to procedure of uploading for A D B D 3 FIRMWARE UPDATING Adjustment of monitor FACTORY RESET on MENU Repair completion ...

Страница 6: ...en 23 2 8 No Speaker out from internal speakers 24 2 9 The fault of Remote control 25 2 10 The fault of Key control pad 26 2 11 Image overlap focus or flicker 27 2 12 Brightness defect 28 2 13 Line defect Block defect 29 2 14 Partially color Brightness uneven 29 2 15 Dot defect Bright dot Dark dot 30 3 DISASSEMBLY 31 3 1 Rear Cover Disassembly 31 3 2 Front disassembly 33 4 REPAIR CHANGE ACCORDING ...

Страница 7: ...nce Inspection 59 9 2 Check for the received recommended frequency 59 9 3 Check the performance 59 9 4 Inspection for Audio function 59 9 5 External Inspection on the LCD Module 59 10 DIMENSION PACKING PALLETIZATION 63 10 1 Dimension 63 10 2 Packaging 64 10 3 Palletization 65 11 LABEL 66 11 1 Label Design 66 11 2 Label Location 66 12 BOM Bill Of Materials 67 ...

Страница 8: ...NFOMATIONS 1 1 Serial Number Information 1 1 1 Model number Refer to the serial number information shown below EX SERIAL NUMBER LABEL Digit Meaning Example above 1 2 Year 14 3 4 Month 10 5 9 Number 04101 Example Serial number is 141004101 ...

Страница 9: ... ohm Firm ware Update A Type USB USB2 0 Control Built in Keypad IR Remote Controller RS232 In Power Consumption 25degC Max 500W Power Consumption Standby mode ECO 0 5W Normal 2W Power Supply AC 100V 240V 50 60 Hz 5 Amps AC 100V 2 Amps AC 240V Operational Environmental Temperature 0 40 C temperature range for usage 5 25 C temperature range for Maximum brightness For longer life operating LCD monito...

Страница 10: ...MI USB B J701 F W update J1105 Touch USB B J105 Audio IN Power STB3 3V TCON 12V Audio 12V A D Main Board LCD Panel VBY1 3840x2160 UHD K84 Block Diagram ver1 0 2014 06 01 USB A Display Port J1103 Display Port J1107 HDMI1 IN DVI J1102 DVI IN VGA J1104 RGB IN Stereo Jack W205 SUB BLU DIM SMW250 03 W803 SPK L SMW250 02 W804 SPK R SPKout L SPKout R VGA IN Audio IN L R VGA IN R G B H V Stereo Jack DP to...

Страница 11: ...76 70 069 75 O O O O 1280 x 768 47 396 59 995 68 25 O O O O 1360 x 768 47 712 60 015 85 5 O O O O 1280 x 1024 63 981 60 02 108 O O O O 1920 x 1080 67 5 60 148 5 O O O O EDTV 480p 31 5 60 27 03 O O O 576p 31 25 50 27 O O O HDTV 720p 37 5 50 74 25 O O O 44 995 59 94 74 176 O O O 45 60 74 25 O O O 1080i 28 13 50 74 25 O O O 33 716 59 94 74 175 O O O 33 75 60 74 25 O O O 1080p 56 25 50 148 5 O O O 67 ...

Страница 12: ...lowings first before finding the problem of the displays A D BD TANGO 300503 POWER BD SMPS KPA 305 107631 KEY PAD BD 300597 POWER BD SMPS KPA 340 109141 External IR Receiver Kit T CON BD Built In Panel BLU Converter BD A Built In Panel BLU Converter BD B Built In Panel ...

Страница 13: ...ng images identify the components and each PC Board of your interactive display MAIN BD KEY PAD BD BLU Converter BD Built In Panel BLU Converter BD Built In Panel Main B D T Con BD Built In Panel POWER BD SMPS KPA 305 POWER BD SMPS KPA 340 KEY PAD BD Mounted on the Back cover ...

Страница 14: ...N of CN4B at SMPS is High above 1 2V but 12 th pin D12V of CN4B at SMPS is out of 11 5V 12 5V In case of that 5th pin S3 3V of CN4B is out of 3V 3 6V Normal STB3 3V Voltage In case of that 7th pin Power ON of W200 at A D B D is High Over 1 2V and 12th pin D12V of W200 at SMPS is 11 5 12 5V Normal Drive Voltage If the rocker switch in the rear of the panel sets with ON but the power status is stand...

Страница 15: ...al REV 0 1 15 1 Disconnect all cables excluding W200 W205 at A D B D CN8 at SMPS for the TEST 2 END OK Check the cables of between A D B D and other B Ds Replace the damaged cables Replace the broken failed B Ds OK ...

Страница 16: ... on Remocon or Key pad Release OFF SCREEN SAVER or POWER SAVE mode OK NO NG OK Does the backlight lights Adjust the contrast and brightness or do Factory Reset on the OSD OK YES NG NO YES Check the connections of CONVERTER cable and TICON cable Connect the cables correctly 1 3 2 NG OK It s able to confirm it through OSD MENU whether POWER SAVE is ON or OFF OK OK OK CONVERTER cable 24V Panel SMPS T...

Страница 17: ...e for BLU ON OFF signal 9th pin of CN4B at PWR B D Replace the A D B D 1 3 2 OK END OK OK OK NG NG Normal voltage at power on 2V 4V It is very difficult to replace the panel to fix the failing system monitor so please choose an replacement of the panel with last way Please see the attached PHOTO 1 for the detail cable route Replace the A D B D Replace the POWER B D ...

Страница 18: ...r BD Built In Panel BLU Converter BD Built In Panel A D B D T Con BD Built In Panel POWER BD SMPS KPA 305 POWER BD SMPS KPA 340 Converter cable 24V Main power cable 3 3V 12V Control signal T Con cable 12V Converter cable 24V Sub SMPS Control cable ...

Страница 19: ...Key pad YES NO YES N G OK In case of No Video but the panel displays the OSD like No Signal It s able to confirm it through OSD MENU whether POWER SAVE is ON or OFF YES Check the PC OK Please check a connection of the HDMI cable or replace DP cable with the another one prior to next step NO OK End OK OK Replace the PC Replace the A D B D Release OFF SCREEN SAVER or POWER SAVE mode Is PC or Monitor...

Страница 20: ... video displays Change the source to HDMI by Remocon or Key pad YES NO YES N G OK In case of No Video but the panel displays the OSD like No Signal It s able to confirm it through OSD MENU whether POWER SAVE is ON or OFF YES Check the PC OK Please check a connection of the HDMI cable or replace HDMI cable with the another one prior to next step NO OK End OK OK Replace the PC Replace the A D B D ...

Страница 21: ...r Key pad YES NO YES N G OK In case of No Video but the panel displays the OSD like No Signal It s able to confirm it through OSD MENU whether POWER SAVE is ON or OFF YES Check the PC OK Please check a connection of the HDMI cable or replace HDMI cable with the another one prior to next step NO OK End OK OK Replace the PC Replace the A D B D Release OFF SCREEN SAVER or POWER SAVE mode Is PC or Mon...

Страница 22: ...Key pad YES NO YES N G OK In case of No Video but the panel displays the OSD like No Signal It s able to confirm it through OSD MENU whether POWER SAVE is ON or OFF YES Check the PC OK Please check a connection of the DVI cable or replace DVI cable with the another one prior to next step NO OK End OK OK Replace the PC Replace the A D B D Release OFF SCREEN SAVER or POWER SAVE mode Is PC or Monitor...

Страница 23: ...Key pad YES NO YES N G OK In case of No Video but the panel displays the OSD like No Signal It s able to confirm it through OSD MENU whether POWER SAVE is ON or OFF YES Check the PC OK Please check a connection of the VGA cable or replace VGA cable with the another one prior to next step NO OK End OK OK Replace the PC Replace the A D B D Release OFF SCREEN SAVER or POWER SAVE mode Is PC or Monitor...

Страница 24: ...Service Manual REV 0 1 24 2 8 No Speaker out from internal speakers ...

Страница 25: ...Service Manual REV 0 1 25 2 9 The fault of Remote control ...

Страница 26: ...Service Manual REV 0 1 26 2 10 The fault of Key control pad ...

Страница 27: ...Service Manual REV 0 1 27 2 11 Image overlap focus or flicker ...

Страница 28: ...Service Manual REV 0 1 28 2 12 Brightness defect ...

Страница 29: ...even Line defect Block defect NG Replace the LCD panel OK Replace the A D B D End OK Line defect Block defect It s very difficult to replace the panel to fix the failing system panel so please choose an replacement of the panel with last way Therefore if possible firstly replace the A D B D ...

Страница 30: ...ct Bright dot Dark dot 1 See section 9 5 3 1 for Dot Defect specification Partially color Brightness uneven NG Replace the LCD panel End OK Dot defect Bright dot Dark dot NG Is the dot defect in the standard 1 OK Replace the LCD panel End OK ...

Страница 31: ...ower and pull out the power plug Use the proper screwdriver If oversize or undersize screwdriver is used screws may be damaged Assembly is reversed process of disassembly 3 1 Rear Cover Disassembly 3 1 1 Remove bolts Remove AD Board cover 3 1 2 Removed bolts Remove REAR COVER MIDDLE ...

Страница 32: ...Service Manual REV 0 1 32 3 1 3 Remove bolts Remove Handles Remove REAR COVER Right Disconnect Harness Remove COVER Left Remove REAR COVER Top Remove REAR COVER Bottom ...

Страница 33: ...Service Manual REV 0 1 33 3 2 Front disassembly 3 2 1 Remove bolts Remove FRONT cover ...

Страница 34: ...rvice Manual REV 0 1 34 4 REPAIR CHANGE ACCORDING TO THE FAILED PARTS 4 1 Repair Change for A D Board 4 1 1 Remove bolts Disconnect Cables Remove A D board Cover Disconnect Cables Repair change A D board ...

Страница 35: ...Service Manual REV 0 1 35 4 2 Repair Change for OSD Key Board 4 2 1 Remove bolts Remove FRONT Left Remove REAR COVER Right Disconnect Cables Repair change OSD Key Board ...

Страница 36: ...Service Manual REV 0 1 36 ...

Страница 37: ...Service Manual REV 0 1 37 4 3 Repair Change for SMPS 4 3 1 Remove bolts Remove REAR COVER Middle Disconnect Cables Remove bolts Repair change SMPS ...

Страница 38: ...Service Manual REV 0 1 38 4 4 Repair Change for Speaker unit 4 4 1 Remove bolts Remove REAR COVER Middle Disconnect Cables Remove bolts Repair change Speaker Unit ...

Страница 39: ... control automation system if present to the RS232 port on the display P1 P2 Stereo Tx 1 2 Rx DSUB9P 3 5mm Rx 2 3 Tx Female Gnd 3 5 Gnd Interface 3 5mm stereo to DSUB 9pins Pin Txd Rxd Gnd Bit rate 19200 bps Data bits 8 bit Parity None Stop bit 1 bit Communication Code ASCII Maximum length 15m To Automation Control System or PC ...

Страница 40: ...ALLPON HEAD Represents the beginning of a statement Put K always SET ID Specifies the product that perform as the command Put ALL or ID number of the product ID range 000 to 100 COMMAND It always consists of 3Bytes As for command refer to page 28 END Represents the end of a statement Put a always 5 3 2 Adjustment command It is to deliver the command which enables to adjust value in the product Sta...

Страница 41: ...presents the end of a statement Put a always 5 3 4 Reply about the status confirmation command It is to receive a reply from the product about the status command Statement form SET ID COMMAND REPLY Ex Power on ALL PWR 001 ALL PWR 001 SET ID Specifies the product that perform as the command Put ALL or ID number of the product ID range 000 to 100 Put the always COMMAND It always consists of 3Bytes A...

Страница 42: ...loading Plug in a USB memory to the service terminal USB USB USB storage device that firmware file for A D B D is stored 6 1 2 Uploading procedure A Enter the FACTORY MENU How to enter FACTORY MENU by Remote Control SOURCE Up Right Left Down B Select Software Update USB and press the SEL button on the remote control ...

Страница 43: ... Software Update USB Are you sure Yes No C 1 1 Select Yes by pressing the Left arrow key on the remote control and the firmware update will begin The panel will automatically power cycle after successful firmware update Once firmware update is complete perform a Factory Reset in the FACTORY MENU After Factory Reset power off the panel using the rocker switch Wait at least 10 seconds and power the ...

Страница 44: ... incompatible USB storage devices If the USB storage device is not compatible a Can t Detect USB message will appear C 3 Regardless of software version the file name must always be MERGE bin in order to upload correctly Can t Detect Software ...

Страница 45: ...Service Manual REV 0 1 45 7 CONNECTION OF THE INTERNAL CABLES 1 Part number 109274 T CON SUB SMPS CN4 ...

Страница 46: ...Service Manual REV 0 1 46 2 Part number 109273 SUB SMPS CN7 AD B D W205 ...

Страница 47: ...Service Manual REV 0 1 47 3 Part number 109272 Main SMPS CN4B SUB SMPS CN8 AD Main W200 ...

Страница 48: ...Service Manual REV 0 1 48 4 Part number 109271 AD Main W804 5 Part number 109270 AD Main W803 ...

Страница 49: ...Service Manual REV 0 1 49 6 Part number 109269 ...

Страница 50: ...Service Manual REV 0 1 50 6 Part number 107545 Main SMPS CN4A SUB SMPS CN3 ...

Страница 51: ...Service Manual REV 0 1 51 7 Part number 107542 OSD KEY ...

Страница 52: ...Service Manual REV 0 1 52 8 Part number 110383 ...

Страница 53: ...Service Manual REV 0 1 53 9 Part number 107540 AD Main W702 IR B D OSD Key B D OSD Key B D IR B D ...

Страница 54: ...Service Manual REV 0 1 54 10 Part number 107536 SMPS Converter 11 Part number 107535 ...

Страница 55: ...Service Manual REV 0 1 55 12 Part number 108481 ...

Страница 56: ...Service Manual REV 0 1 56 41p 13 Part number 108482 ...

Страница 57: ...09269 HN ACIO INLT 3P 3P 0810 0700MM 22 YH396 RF2001A41 048 AC SMSPS 108482 HN VBY1 41P 0410 JF10R041 JF10R041 AWM2 0861 AD Main T CON 108481 HN VBY1 51P 0410 JF10R051 JF10R051 AWM20861 AD Main T CON 107545 HN BTB 13P 04P 0560MM 2 00 2 00MM SMH200 13 SMH200 04 UL1007 Main SMPS SUB SMPS 107542 HN BTW 05P 05P 0400MM 26 12505HS 05 SMH200 05PL UL1061 OSD Key cable 107540 110383 HN WIRE 04P 06P 0060MM ...

Страница 58: ... Language English Spanish French Danish Russian German Italian Dutch Norwegian Finnish Swedish Korean Different depends on last saved language OSD Turn OFF Off Always ON 5 10 15 sec Default 5 sec OSD Reset Reset the settings related OSD 4 Setup Power Save ON OFF Default On Standby Mode ECO Normal Default ECO Setup Reset Reset the settings related Setup FACTORY RESET Reset the all Memu 5 About Mode...

Страница 59: ...io input terminal with PC or Audio player and audio signal 2 Receive 3 840 x 2 160 30Hz or 1920 X 1080 60Hz 3 Display the sound adjustment stage 4 Press Vol and Vol button to change the sound level 5 Check that the sound outputs normally from the right and left speaker 9 5 External Inspection on the LCD Module 9 5 1 Description The LC840EQD is a Color Active Matrix Liquid Crystal Display with an i...

Страница 60: ...5 Gray pattern 9 5 3 Inspection Criteria 9 5 3 1 Dot Defect 1 Bright Dot Dot sub pixels which appeared brightly in the screen shen the LCM displayed with dark pattern Item 84 R G or B 1 dot Max 4 Adjacent2 dots Max 1 Adjacent3 dots 0 Total amount of Bright dots Max 4 2 Partial Bright Dot Among Bright dots the size of Dots sub pixels which appeared less than half size of sub pixel is defined as par...

Страница 61: ... are not considered as a defect 9 5 3 2 Polarizer Defects Item 84 Size Q ty Linear 0 01 W 1 5 0 5 L 8 0 N 10 Circular 0 3 D 5 0 N 10 Where W Width L Length D Average diameter a b 2 Note a Linear a 2b Circular a 2b b Extraneous sustances which can be wiped off Like Finger Print Particles are not considered as a defect c Defects which is on the black matrix outside of Active Area are not considered ...

Страница 62: ...are not considered as a defect c Defects which is on the black matrix outside of Active Area are not considered as a defect 9 5 3 4 Line Defect All kinds of line defects such as vertical horizontal or cross are not allowed 9 5 3 5 Bezel Appearance Scratches minor bents stains particles on the Bezel frame are not considered as a defect ...

Страница 63: ...Service Manual REV 0 1 63 10 DIMENSION PACKING PALLETIZATION 10 1 Dimension 10 1 1 Outside View 10 1 2 Dimension Item Width mm Height mm Depth mm VESA mounting mm Dimension 1910 0 1102 0 90 5 600 X 600 ...

Страница 64: ...Service Manual REV 0 1 64 10 2 Packaging 10 2 1 Unpacking ...

Страница 65: ...etization 10 3 1 Outside Dimension The carton will be strapped to a single pallet 1 wide Dimensions 2120 D x 350 W x 1397 H mm 10 3 2 Container Loading Container 40ft 33 EA VIEW A VIEW B H D W VIEW A TOP VIEW B SIDE 11950 D 2330 W 2270 H ...

Страница 66: ...Service Manual REV 0 1 66 11 LABEL 11 1 Label Design 11 1 1 for KORTEK For korea 11 2 Label Location Label ...

Страница 67: ...0640MM 2 00 2 00MM SMH20 1 EA 109274 HN BTB 10P 05P 0280MM 2 00 2 00MM SMH20 1 EA 110383 HN WIRE 04P 06P 0060MM 24 PJ31640 M660 1 EA 102880 LCM IPS LC840EQD SEM1 7A2 B E LED QWUXG 1 EA 107631 SMPS O F KPA 305 305W 3 3 12 12 24V 1 EA 109141 SMPS O F KPA 340 340W 12 24V 1 EA 110049 LICENSE KEY HDMI_ROYALTY NO_HDMI_LOGO 1 EA 106379 SPEAKER 1504Y2 193 5x42x39 2 8 10 2 EA 105270 THERMAL PAD 30x35 10 1 ...

Страница 68: ...UD 2300X1500X0 5T 1 EA 104414 M SCREW BLK PH M3X6 4 EA 104438 M SCREW ZN PH SW PW M3X6 16 EA 104445 M SCREW ZN PH SW PW M4X10 42 EA 104444 M SCREW BLK PH SW PW M4X8 8 EA 109878 M SCREW BLK TH M5X12 8 EA 104453 M SCREW ZN PH SW PW M8X20 8 EA 104456 M SCREW NI PH STW M4X10 1 EA 104522 WASHER PW WHT 4X10 1 EA 104471 M SCREW BLK BH M4X6 57 EA 107823 M SCREW ZN PH PW Φ18 M4X10 4 EA 104392 M TAP SCREW Z...

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