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Kortek KT-LL84ULFX-PD Service Manual

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

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Summary of Contents for Kortek KT-LL84ULFX-PD

  • Page 1 SERVICE MANUAL LCD MONITOR Model : KT-LL84ULFX-PD Written date: Jun 06, 2015 Composed by: Roy Yeom in KORTEK...
  • Page 2 Service Manual REVISION HISTORY REVISION DATE NOTE REV0.1 issued Jun 06, 2015 REV 0.1...
  • Page 3 Service Manual VERY IMPORTANT! This Equipment is compatible with RoHS Directive and Lead-Free. Since the equipment is compatible with RoHS Directive, use components in which the use of specific chemically noxious substances is restricted; use only designated spare parts when it is necessary to replace such parts with new parts.
  • Page 4 Service Manual Procedure of monitor repair-1 (Replacement of defective parts) Confirmation of monitor version(Serial No.) 1. SERIAL NUMBER INFORMATION Confirmation 2. TROUBLE SHOOTING of defective parts Replacement 3. REPLACEMENT of defective parts Electric parts What are replacement parts? Appearance parts Were A/D B/D Was other parts or No (NPF)
  • Page 5 Service Manual Procedure of monitor repai r-2 (New firmware updating) Confirmation of monitor 1. SERIAL NUMBER INFORMATION version(Serial No.) 2. SELECTING PROGRAM FOR FIRMWARE-UPLOADING Old Firmware What are uploading parts? A/D BOARD (SCALER) * For the detail, see the Latest separate description Firmware Update according to...

  • Page 6: Table Of Contents

    REPAIR/CHANGE ACCORDING TO THE FAILED PARTS ..............34 Repair/Change for A/D-Board ....................... 34 Repair/Change for OSD Key Board ..................... 35 Repair/Change for SMPS ......................37 Repair/Change for Speaker unit (Only for Kortek) ..............38 RS-232 ............................... 39 RS-232 Connection ........................39 Serial Command List ........................40 Command Format ..........................
  • Page 7 Service Manual SETTING(On Screen Display) ........................58 Shipment-Setting ........................... 58 OSD Control Items in FACTORY- MENU ..................58 INSPECTION ............................. 59 Electric Performance Inspection ....................59 Check for the received recommended frequency ..............59 Check the performance ......................... 59 Inspection for Audio function ...................... 59 External Inspection on the LCD Module ..................

  • Page 8: Product Infomations

    Service Manual 1. PRODUCT INFOMATIONS Serial Number Information 1.1.1 Model number : Refer to the serial number information shown below. EX.) SERIAL NUMBER LABEL Digit Meaning Example above Year Month Number 04101 Example Serial number is : 141004101 REV 0.1...

  • Page 9: Product Specification

    Service Manual Product specification Item Specification LCD Module Pixel Pitch 0.4845 mm x 0.4845 mm Resolution 3,840 x 2,160 dots Color 1.06 Billion Colors Brightness Min 220 cd/m , Typ 250 cd/m Contrast ratio Min 750 Viewing Angle H:178° / V:178° (CR >10) Viewable Size 1860.48 mm x 1046.52 mm (16:9 ratio) Power Management...

  • Page 10: Overall Blockdiagram For The Panel

    Service Manual * License: HDMI, HDCP Recommendation -20C to +60C" Prior to operation, LCD must obtain operating temp. before powering up. Recommend 1 day stabilization time for extreme temperature conditions Overall blockdiagram for the panel AFO IR Touch LCD Panel VBY1 3840x2160(UHD) K84 Block Diagram (ver1.0) 2014.06.01...

  • Page 11: Input-Signal Timing(Vesa)

    Service Manual Input-Signal Timing(VESA) Timing 720 x 400 31.5 70.156 26.25 640 x 480 31.469 59.95 25.175 800 x 600 37.879 60.317 48.363 60.004 1024 x 768 VESA 56.476 70.069 1280 x 768 47.396 59.995 68.25 1360 x 768 47.712 60.015 85.5 1280 x 1024...

  • Page 12: Trouble Shooting

    Service Manual 2. TROUBLE SHOOTING Please refer to the followings first before finding the problem of the displays. A/D BD POWER- BD(SMPS) TANGO (300503) KPA-305 (107631) KEY PAD BD POWER- (300597) BD(SMPS) KPA-340 External (109141) IR Receiver T-CON (Built-In Panel) Converter Converter BD - A...
  • Page 13 Service Manual ☞ The location of each boards in system. The following images identify the components and each PC Board of your interactive display. Converter BD Converter BD (Built-In Panel) (Built-In Panel) Main B/D T-Con BD (Built-In Panel) POWER-BD POWER-BD (SMPS) (SMPS) KPA-305...

  • Page 14: No Power

    Service Manual No Power No Power Connect the power cable to the Check the power cable panel again. connection Turn the POWER-SWITH Check the POWER-SWITCH to ‘ON’ in the rear of panel * If the rocker-switch in the rear of the panel sets with ON but the power-status is standby(LED-color is red for power-status), please turn the power on by Key pad or press the power button on the remote control...
  • Page 15 Service Manual Check the cables of between A/D-B/D Disconnect all cables and other B/Ds. excluding W200, W205 at Replace the damaged cables A/D-B/D & CN8 at SMPS for Replace the broken(failed) the TEST B/Ds REV 0.1...

  • Page 16: No Video (Led For Power Indicator: Green)

    Service Manual No Video (LED for Power indicator: Green) No Video (The LED for power-status is Green) Does the video displays? Change the input source by Check the input source. Source-key on Remocon or Key pad. Release(OFF) SCREEN SAVER Is "PC" or "Monitor" in the state or POWER SAVE mode.
  • Page 17 Service Manual Normal voltage at power- on: 2V~4V Check the voltage for BLU- ON/OFF-signal(9 pin of CN4B at PWR B/D) Replace the A/D B/D Check connections of Vby1 cable between A/D board and Connect the Vby1 cable correctly. Panel Please see the attached *PHOTO-1 for the detail-cable-route Replace the A/D B/D.
  • Page 18 Service Manual ☞ PHOTO-1 Converter BD Converter BD (Built-In Panel) (Built-In Panel) Main power cable Converter cable(24V) (3.3V, 12V, Control signal) Converter cable(24V) A/D B/D T-Con BD (Built-In Panel) T-Con cable(12V) POWER-BD POWER-BD (SMPS) (SMPS) KPA-305 KPA-340 Sub SMPS Control cable REV 0.1...

  • Page 19: No Video At Dp Input (Led For Power Indicator: Green)

    Service Manual No Video at DP input (LED for Power indicator: Green) No-Video but the panel displays * In case of No Video the OSD like ‘No-Signal’. (The LED for power-status on the IR receiver is Green) Does the video displays? * Please check a connection of the HDMI- cable or replace DP-cable with the another one prior to next step.

  • Page 20: No Video At Hdmi1 Input (Led For Power Indicator: Green)

    Service Manual No Video at HDMI1 input (LED for Power indicator: Green) No-Video but the panel displays * In case of No Video the OSD like ‘No-Signal’. (The LED for power-status on the IR receiver is Green) Does the video displays? * Please check a connection of the HDMI- cable or replace HDMI-cable with the another one prior to next step.

  • Page 21: No Video At Hdmi2 Input (Led For Power Indicator: Green)

    Service Manual No Video at HDMI2 input (LED for Power indicator: Green) No-Video but the panel displays * In case of No Video the OSD like ‘No-Signal’ (The LED for power-status on the IR receiver is Green) Does the video displays? * Please check a connection of the HDMI- cable or replace HDMI-cable with the another one prior to next step.

  • Page 22: No Video At Dvi Input (Led For Power Indicator: Green)

    Service Manual No Video at DVI input (LED for Power indicator: Green) No-Video but the panel displays * In case of No Video the OSD like ‘No-Signal’. (The LED for power-status on the IR receiver is Green) Does the video displays? * Please check a connection of the DVI- cable or replace DVI-cable with the another one prior to next step.

  • Page 23: No Video At Vga Input (Led For Power Indicator: Green)

    Service Manual No Video at VGA input (LED for Power indicator: Green) No-Video but the panel displays * In case of No Video the OSD like ‘No-Signal’. (The LED for power-status on the IR receiver is Green) Does the video displays? * Please check a connection of the VGA- cable or replace VGA-cable with the another one prior to next step.

  • Page 24: No Speaker-Out From Internal-Speakers

    Service Manual No Speaker-out from internal-speakers REV 0.1...

  • Page 25: The Fault Of Remote Control

    Service Manual The fault of Remote control REV 0.1...

  • Page 26: The Fault Of Key Control Pad

    Service Manual 2.10 The fault of Key control pad REV 0.1...

  • Page 27: Image Overlap, Focus Or Flicker

    Service Manual 2.11 Image overlap, focus or flicker REV 0.1...

  • Page 28: Brightness Defect

    Service Manual 2.12 Brightness defect REV 0.1...

  • Page 29: Line Defect / Block Defect

    Service Manual 2.13 Line defect / Block defect [Line defect] [Block defect] It’s very difficult to replace the panel to fix the failing system(panel), so, please Line defect / Block defect choose an replacement of the panel with last way(Therefore, if possible, firstly replace the A/D-B/D).

  • Page 30: Dot Defect (Bright Dot / Dark Dot)

    Service Manual Partially color / Brightness uneven Replace the LCD panel. 2.15 Dot defect (Bright dot / Dark dot) Dot defect (Bright dot / Dark dot) Is the dot defect in the standard ? (*1) Replace the LCD panel. (*1) See section 9.5.3.1 for Dot Defect specification.

  • Page 31: Disassembly

    Service Manual 3. DISASSEMBLY ■ Before you disassemble the set, turn off power 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. Rear-Cover Disassembly 3.1.1.
  • Page 32 Service Manual 3.1.3 Remove bolts  Remove Handles  Remove REAR-COVER-Right Disconnect Harness  Remove-COVER-Left  Remove REAR-COVER-Top  Remove REAR-COVER Bottom. REV 0.1...

  • Page 33: Front Disassembly

    Service Manual Front disassembly 3.2.1. Remove bolts  Remove FRONT cover REV 0.1...

  • Page 34: Repair/Change According To The Failed Parts

    Service Manual 4. REPAIR/CHANGE ACCORDING TO THE FAILED PARTS 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 REV 0.1...

  • Page 35: Repair/Change For Osd Key Board

    Service Manual 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 REV 0.1...
  • Page 36 Service Manual REV 0.1...

  • Page 37: Repair/Change For Smps

    Service Manual Repair/Change for SMPS 4.3.1. Remove bolts  Remove REAR-COVER-Middle  Disconnect Cables Remove bolts  Repair/change SMPS REV 0.1...

  • Page 38: Repair/Change For Speaker Unit (Only For Kortek)

    Service Manual Repair/Change for Speaker unit 4.4.1. Remove bolts  Remove REAR-COVER-Middle  Disconnect Cables Remove bolts  Repair/change Speaker Unit REV 0.1...

  • Page 39: Rs-232 Connection

    Service Manual 5. RS-232 RS-232 Connection Use a null RS232 cable with a 3.5mm stereo connector to connect a PC or control/ automation system (if present) to the RS232 port on the display To Automation/ Control System or PC Stereo DSUB9P 3.5mm (Female)

  • Page 40: Serial Command List

    Service Manual Serial Command List Description Command Value Reply Power Key Off Power Key On Power status Off : 000, On : 001 Mute Off Execute Mute On Execute Mute status Off : 000, On : 001 Volume Value 0 ~ 100 0 ~ 100 VGA : 000, DVI:001, HDMI1:005, Current source status...
  • Page 41 Service Manual 5.3.3 Status confirmation command It is to send commands to the product to request reply about the command state of the product. Statement form: [HEAD][SET ID][COMMAND][END] Ex) Make sure if the power switch is on: [K:][ALL][PWR][?] → K: ALLPWR? •...

  • Page 42: Firmware Update

    Service Manual 6. FIRMWARE UPDATE Uploading the firmware for A/D board 6.1.1 System connection for uploading Plug in a USB memory to the service terminal. USB storage device (that firmware file for A/D-B/D is stored) 6.1.2 Uploading procedure A) Enter the FACTORY-MENU ...
  • Page 43 Service Manual Factory Setting EDID Write ADC Adjust White Pattern Software Update(USB) Factory Reset TANGO C-1) Select ‘Software Update(USB)’. Software Update(USB) 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.
  • Page 44 Service Manual C-2) In case of 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...

  • Page 45: Connection Of The Internal Cables

    Service Manual 7. CONNECTION OF THE INTERNAL CABLES (1) Part number : 109274 SUB SMPS T-CON REV 0.1...
  • Page 46 Service Manual (2) Part number : 109273 SUB SMPS AD B/D W205 REV 0.1...
  • Page 47 Service Manual (3) Part number : 109272 Main SMPS CN4B AD Main W200 SUB SMPS REV 0.1...
  • Page 48 Service Manual (4) Part number : 109271 AD Main W804 (5) Part number : 109270 AD Main W803 REV 0.1...
  • Page 49 Service Manual (6) Part number : 109269 REV 0.1...
  • Page 50 Service Manual (6) Part number : 107545 SUB SMPS Main SMPS CN4A REV 0.1...
  • Page 51 Service Manual (7) Part number : 107542 OSD KEY REV 0.1...
  • Page 52 Service Manual (8) Part number : 110383 REV 0.1...
  • Page 53 Service Manual (9) Part number : 107540 AD Main OSD Key B’D W702 IR B’D OSD Key B’D IR B’D REV 0.1...
  • Page 54 Service Manual (10) Part number : 107536 SMPS Converter (11) Part number : 107535 REV 0.1...
  • Page 55 Service Manual (12) Part number : 108481 REV 0.1...
  • Page 56 Service Manual (13) Part number : 108482 REV 0.1...
  • Page 57 HN BTB>10P+05P,0280MM@2.00/2.00MM,SMH200-10+PAP- SUB SMPS ↔ T-CON 109274 05V-S,UL1007 AD Main ↔ SUB HN BTB>02P+02P,0640MM@2.00/2.00MM,SMH200- 109273 02+SMH200-02,UL1007 SMPS AD Main ↔ Main HN MULTI>KORTEK@IWB-K84,KORTEK,KT-LL84ULFI- 109272 IW,WALLBKT,No.01 SMPS HN BTW>02P+02P,1100MM,#20@SMH250- Speaker ↔ AD Main 109271 02+YRT187/110,UL1007 HN BTW>03P+02P,0590MM,#20@SMH250- Speaker ↔ AD Main...

  • Page 58: Setting(On Screen Display)

    Service Manual 8. SETTING(On Screen Display) Shipment-Setting * The way to initialize with shipment setting is to run the ‘Factory Reset’ on the OSD-MENU. * The value of menu are subject to change without notice. Upper Lower Note Picture Mode USER,DYNAMIC,STANDARD (Default: STANDARD) Brightness 0-100 (Default: 80)

  • Page 59: Inspection

    Service Manual 9. INSPECTION Electric Performance Inspection Check for OSD control switch. Receive Ultra HD(UHD) 3,840 X 2,160 (30Hz) or FHD(WUXGA) 1,920 x 1,080(60Hz), cross hatch pattern. Check that the LED on IR Receive B'D is Green Check that any noise is shown on the display with power on and off. Check that OSD is displayed when the MENU button on the OSD-KEY(on rear-side of panel) is pressed.
  • Page 60 Service Manual The angles are determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the LCD module surface. Normal Ø =90°,Up θ Θ (x axis) = 89° Right (Ø...
  • Page 61 Service Manual (4) Total amount of Dot Defects (Combination) Item 84" Q'ty Max 20 Note) a. Every dot herein means Sub-Pixel(Each Red, Green, or Blue Color). b. Dots smaller than half sub-pixel are not counted as a defect dots. c. The Dot defect is inspected on Red, Green, Blue, White, or Black pattern. d.
  • Page 62 Service Manual Note) a. Linear : a > 2b , Circular : a ≤ 2b b. Extraneous substances 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 as a defect. 9.5.3.4 Line Defect All kinds of line defects such as vertical, horizontal or cross are not allowed.

  • Page 63: Dimension/Packing & Palletization

    Service Manual 10. DIMENSION/PACKING & PALLETIZATION 10.1 Dimension 10.1.1. Outside View 10.1.2 Dimension Width Height Depth VESA mounting Item (mm) (mm) (mm) (mm) Dimension 1910.0 1102.0 90.5 600 X 600 REV 0.1...

  • Page 64: Packaging

    Service Manual 10.2 Packaging 10.2.1. Unpacking REV 0.1...

  • Page 65: Palletization

    Service Manual 10.3 Palletization 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 11950(D) VIEW A 2330(W) (TOP) VIEW B 2270(H) (SIDE) REV 0.1...

  • Page 66: Label

    Service Manual 11. LABEL 11.1 Label Design 11.1.1 for KORTEK (For korea) 11.2 Label Location Label REV 0.1...

  • Page 67: Bom(Bill Of Materials)

    101407 CORE CLIP>ZCAT2035-0930,35X20,WHT 1 EA 105479 SHIELD FOAM>UAG20-3-44.58-16-S 1 EA 107535 HN INV>12P+12P,0770MM,#24@20022HS-12P+S= 2 EA 107536 HN INV>14P+12P,0770MM,#24@20022HS-14P+S= 2 EA 107540 HN MULTI>KORTEK@IWB-K84,KORTEK,KT-LL84U= 1 EA 107542 HN BTW>05P+05P,0400MM,#26@12505HS-05+SM= 1 EA 107545 HN BTB>13P+04P,0560MM@2.00/2.00MM,SMH20= 1 EA 108481 HN VBY1>51P,0410,JF10R051+JF10R051,AWM2= 1 EA 108482 HN VBY1>41P,0410,JF10R041+JF10R041,AWM2=...
  • Page 68 Service Manual 107671 BKT PSU>84EDU,BASE3,EGI1.0T,- 1 EA 107677 BKT PSU>84EDU,BASE2,EGI1.0T,- 1 EA 107691 BKT PSU>84EDU,BASE1,EGI1.0T,- 1 EA 106983 HANDLE(D)>SMART,BLK,8070iCE,195X52 2 EA 110011 BOX SYS>PD84,2100x1262 1 EA 110012 PALLET>2120X350X120,WOODEN 1 EA 109619 CUSHION(PE FOAM)>PD84,L 2 EA 109620 CUSHION(PE FOAM)>PD84,R 2 EA 110369 CUSHION(PE FOAM)>PD84,T 1 EA 110370 CUSHION(PE FOAM)>PD84,B...

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