AKAI SERVICE MANUAL Model: LCT42Z6TM 1. Safety Instructions………………...………………………………………………….1~2 2. Trouble Shooting manual of LCD…………………………………………………….3~4 3. Product Specification………………………………………………………………….5~7 4. Block Diagram….…………………………………………………………………….8~9 5. Circuit diagram……………………………………………………………………….10~17 6. Basic Operation & Circuit Description………………………………………………18~20 7. Main IC Information…………………………………………………………………21~39 8. Panel Information……………………………………………………………………40~68 9. Explored View………………………………………………………………………69 10. Spare Pare List………………………………………………………………………70~72 11.
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I. Safety Instructions The l ig h tn i ng fla sh w i th arro wh e ad symb ol , within an equilatera l triangle, is intended to alert CAUTION the user to the presence of uninsulated “ dangerous voltage”...
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PRODUCT SAFETY NOTICE 4. Completely discharge the high pote ntial voltage of the picture tube before handli ng. The pi cture tube is a Many e lectrical an d mechanica l parts in this vacuum and if bro ken, the gl ass will explode. monitor have special safety-related characteristics.
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No image or badly distorted image with horizontal and/or vertical lines static lines. Symptom may have four boxes in each of the corners of the screen. Procedure Instructions There are 5 capacitors on the main PCB that have been identified as the primary cause of this symptom.
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1.Do not power on . 1.1 Please check AC cable if connect to AC plug. Is true the connector don’t connect to AC plug. Please connect it. 1.2 Please check AC cable if connect to AC power. Is true the AC cable don’t connect to AC power. Please connect it. 1.3 Please check power board of fuse if broken.
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have +5V voltage, It’s true, than to check power board of +24v voltage, It’s true. The panel of backlight board is fail. The change panel of backlight board. Please refer to attached sheet B Panel of datasheet. 4.The screen don’t have picture But have backlight. 4.1 To check to panel of voltage , to check Main Board IC N031 the 5 pin of voltage is +12v.
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Product Specification Product Model: LCT42Z6TM Screen Size: 42” diagonal Screen Area: 930.24mm(H) x 531.26mm(V) Aspect Ratio: 16:9 External Size: 1067.3mm(W) x 781.2mm(H) x 275.0mm(D) (with Stand) 1067.3mm(W) x 732.3mm(H) x 117.0mm(D) (w/o Stand) 27.5kg (with Stand) Net Weight Resolution: 1920 (H) x 1080 (V) pixels (Each pixel has R/G/B 3...
Support the Signal Mode D-Sub Mode (VGA) Horizontal Vertical Resolution Frequency Frequency (KHz) (Hz) 640 x 480 31.50 60.00 35.16 56.25 800 x 600 37.90 60.32 1024 x 768 48.40 60.00 1280 x 1024 64.00 60.01 HDTV Mode (YPbPr) Horizontal Vertical Resolution Frequency...
Remote Control Standby( ): Press this button to turn off to standby and turn on from standby. Mute( ): Press this button to quiet the sound system. Press again to reactivate the sound system. Number buttons: Use these buttons to enter the password. Source: Press this button and use ▲...
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Basic Operations & Circuit Description MODULE There are 1 pcs panel and 5 pcs PCB including 3 pcs Extension PCB, 1 pcs Timming controller board and 1 pcs Back Light board in the Module. There are 3 pcs PCBs including 1 pcs, 1 pcs keypad board, 1 pcs Remote Control Receiver board, 1 pcs Main(Video)board. 18/75...
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PCB funtion 1. Power : (1). Input voltage: AC 120V, 60Hz. (2). To provide power for PCBs. 2. Main board : To converter, S signals, AV signals, Y Pb/Cb Pr/Cr signals, DVI/HDMI signals and D-SUB signals to digital ones and to dealing with the digital signal for output to panel. 19/75...
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PCB failure analysis 1. POWER : NO picture, no power output. 2. Back Light : a. No picture. b. Flash on screen. c. Darker picture with signals. 20/75...
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Main IC Specifications - HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter 21/75...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 FEATURES Ÿ LCD TV controller with PIP/POP display functions Digital Audio Interface Ÿ Input supports up to SXGA & 1080P Ÿ I S digital audio input & output Ÿ...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Ÿ Automatic 3:2 pull-down & 2:2 pull-down LVDS/TTL Panel Interface detection and recovery Ÿ Supports 8/10-bit dual link LVDS up to full HD Note Ÿ...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 PIN DIAGRAM (MST9U89AL) Note 1: This pin diagram is based LVDS output. For details, please see the Output Type vs. Pin Configuration at the end of Pin Description section.
MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 PIN DESCRIPTION MCU Interface Pin Name Pin Type Function HWRESET Schmitt Trigger Input Hardware Reset, active high w/ 5V-tolerant I/O w/ 5V-tolerant MCU Bus ALE, active high / General Purpose Input/Output (GPIOC[10]) I/O w/ 5V-tolerant MCU Bus RDZ, active low /...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Pin Name Pin Type Function VSYNC1 Schmitt Trigger Input Analog VSYNC Input from Channel 1 / w/ 5V-tolerant Fast Blanking Input from Channel 1 (FBLK1) BIN1M Analog Input Reference Ground for Analog Blue Input from Channel 1...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Pin Name Pin Type Function CVBS0 Analog Input CVBS (Composite) Video Input Channel 0 CVBSOUT Analog Output CVBS (Composite) Video Output Analog Audio Input/Output Interface Pin Name Pin Type Function...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Pin Name Pin Type Function RX1P Input DVI/HDMI Channel 1 Positive Data Input RX2N Input DVI/HDMI Channel 2 Negative Data Input RX2P Input DVI/HDMI Channel 2 Positive Data Input RXCKN Input DVI/HDMI Negative Clock Input...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Note 1 TTL Interface Pin Name Pin Type Function Output w/ Pull-down LCD Output Clock; 6mA driving strength Resistor Output w/ Pull-down LCD Data Enable Output; 6mA driving strength Resistor LHSYNC Output w/ Pull-down...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Note 2 GPIO Interface Pin Name Pin Type Function GPIOE[3:0] (not 5V-tolerant) General Purpose Input/Output (GPIOE[3:0]) 225-228 GPIOF[10:2] I/O w/ 5V-Tolerant General Purpose Input/Output (GPIOF[10:2]) 96-88 SAR3 (not 5V-tolerant)
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Pin Name Pin Type Function General Purpose Input/Output (GPIOA[25]) IHSYNC I/O w/ 5V-tolerant Digital Input HSYNC / Universal Asynchronous Receiver 1 (UART1_RX) / General Purpose Input/Output (GPIOA[26]) IVSYNC I/O w/ 5V-tolerant Digital Input VSYNC /...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Pin Name Pin Type Function DDCA_DA I/O w/ 5V-tolerant DDC Data for Analog port / Universal Asynchronous Transmitter 0 (UART0_TX) / General Purpose Output (GPIOD[10]) DDCR_CK I/O w/ 5V-tolerant DDC Clock for ROM /...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Note 1: Output Type vs. Pin Configuration Pin #197-228 LVDS Pin #197-228 LVDS LVA4P BA[0] LVB3P GA[6] LVA4M BA[1] LVB3M GA[7] LVA3P BA[2] LVBCKP RA[0] LVA3M BA[3]...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Pin #233-241, #244-251 Pin # Digital Video Input Digital Audio I/O Digital Audio I/O Data (AU_SWAP=0) (AU_SWAP=1) DI[0] SPDIFO DI[1] AUMCKO DI[2] AUMUTE DI[3] AUWS DI[4] AUSCK...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Note 3: Digital Video Input Format Table Format 8-Bit ITU656 10-Bit ITU656 8-Bit ITU601 YC Swap ML Swap ICLK ICLK ICLK ICLK ICLK ICLK ICLK ICLK ICLK...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 ELECTRICAL SPECIFICATIONS Analog Interface Characteristics Parameter Unit VIDEO ADC Resolution Bits DC ACCURACY Differential Nonlinearity Integral Nonlinearity VIDEO ANALOG INPUT Input Voltage Range Minimum V p-p Maximum V p-p...
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MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 Parameter Unit AUDIO ADC Input V p-p DAC Output V p-p SIF Input Range Minimum V p-p Maximum V p-p FSSW Input SAR ADC Input FB ADC Input 1.25 Specifications subject to change without notice.
MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 ORDERING GUIDE MARKING INFORMATION MST9U89AL Model Temperature Package Package Part Number Range Description Option Lot Number MST9U89AL 0°C to +70°C LQFP Operation Code A MST9U89AL-LF 0°C to +70°C LQFP...
MST9U89AL HDTV Controller with Video Decoder & 10-bit Dual LVDS Transmitter Preliminary Data Sheet Version 0.5 MECHANICAL DIMENSIONS E-Pad (at back of IC) Gauge Plane 0.25mm Seating Plane Millimeter Inch Millimeter Inch Symbol Symbol Min. Nom. Max. Min. Nom. Max. Min.
LC420WU1 Liquid Crystal Display Product Specification SPECIFICATION APPROVAL ● Preliminary Specification Final Specification Title 42.0” WUXGA TFT LCD SUPPLIER LG.Philips LCD Co., Ltd. BUYER General *MODEL LC420WU1 MODEL SUFFIX SL01 *When you obtain standard approval, please use the above model name without suffix SIGNATURE SIGNATURE APPROVED BY...
LC420WU1 Liquid Crystal Display Product Specification CONTENTS Number ITEM Page COVER CONTENTS RECORD OF REVISIONS GENERAL DESCRIPTION ABSOLUTE MAXIMUM RATINGS ELECTRICAL SPECIFICATIONS ELECTRICAL CHARACTERISTICS INTERFACE CONNECTIONS SIGNAL TIMING SPECIFICATIONS SIGNAL TIMING WAVEFORMS COLOR DATA REFERENCE POWER SEQUENCE OPTICAL SPECIFICATIONS MECHANICAL CHARACTERISTICS RELIABILITY INTERNATIONAL STANDARDS SAFETY...
LC420WU1 Liquid Crystal Display Product Specification 1. General Description The LC420WU1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive display type which is operating in the normally black mode. It has a 42.02 inch diagonally measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
LC420WU1 Liquid Crystal Display Product Specification 2. Absolute Maximum Ratings The following items are maximum values which, if exceeded, may cause faulty operation or damage to the LCD module. Table 1. ABSOLUTE MAXIMUM RATINGS Value Parameter Symbol Unit Remark at 25 ± 2 °C -0.3 +14.0 Power Input...
LC420WU1 Liquid Crystal Display Product Specification 3. Electrical Specifications 3-1. Electrical Characteristics It requires two power inputs. One is employed to power for the LCD circuit. The other Is used for the CCFL backlight and inverter circuit. Table 2. ELECTRICAL CHARACTERISTICS Value Parameter Symbol...
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LC420WU1 Liquid Crystal Display Product Specification Table 3. ELECTRICAL CHARACTERISTICS (Continue) Value Parameter Symbol Unit Note Inverter : Power Input Voltage 22.8 24.0 26.0 Power Supply Input Voltage Ripple -0.2 Vp-p Unloading Input Voltage Power Input Current Power Consumption Brightness Adjust Input Voltage for Control System V on...
LC420WU1 Liquid Crystal Display Product Specification 3-2. Interface Connections This LCD module employs two kinds of interface connection, a 51-pin connector is used for the module electronics and two 12-pin connectors are used for the integral backlight system. 3-2-1. LCD Module - LCD Connector(CN1): FI-R51S-HF(manufactured by JAE) or equivalent - Mating Connector : FI-R51HL(JAE) or compatible Table 4.
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LC420WU1 Liquid Crystal Display Product Specification Table 5. Required signal assignment for Flat Link (Thine : THC63LVD823) Transmitter(Pin7=“L) THC63LVD823 Host System Timing or Compatible 24 Bit Controller FI-R51S-HF 53/81 R10/R20 54/82 RxO0- R11/R21 100Ω TA1-TA1+ RxO0+ 57/83 R12/R22 RxO1- 58/84 R13/R23 TB1-/TB1+ 100Ω...
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LC420WU1 Liquid Crystal Display Product Specification Table 6. Required signal assignment for Flat Link (Thine : THC63LVD823) Transmitter(Pin7=“H”) Host System THC63LVD823 Timing 24 Bit or Compatible Controller FI-R51S-HF R10/R20 51/79 TA1+/TA1- R11/R21 52/80 100Ω R12/R22 RxO0-/RxO0+ 53/81 TB1+/TB1- R13/R23 RxO1-/RxO1+ 54/82 100Ω...
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LC420WU1 Liquid Crystal Display Product Specification 3-2-2. Backlight Inverter Input Connector -Inverter Connector : S12B-PH-SM3(manufactured by JST) or Equivalent -Mating Connector : PHR-12 or Equivalent Status Connector -Inverter Connector : 20022WR-02A00(manufactured by Yeon Ho co., Korea) -Mating Connector : 20022HR-02S00(manufactured by Yeon Ho co., Korea) Table 7.
LC420WU1 Liquid Crystal Display Product Specification 3-3. Signal Timing Specifications Table 8 and Table9 show the signal timing required at the input of the LVDS transmitter. All of the interface signal timing should be satisfied with the following specification for normal operation. Table 8.
LC420WU1 Liquid Crystal Display Product Specification 3-4. Signal Timing Waveforms 0.7VDD DE, Data 0.3VDD 0.5 VDD DCLK Valid data Invalid data First data Invalid data Pixel 0,0 Pixel 2,0 Valid data Invalid data Second data Invalid data Pixel 1,0 Pixel 3,0 DE(Data Enable) 1080 DE(Data Enable)
LC420WU1 Liquid Crystal Display Product Specification 3-5. Color Data Reference The brightness of each primary color(red,green,blue) is based on the 8-bit gray scale data input for the color. The higher binary input, the brighter the color. Table 10 provides a reference for color versus data input. Table 10.
LC420WU1 Liquid Crystal Display Product Specification 3-6. Power Sequence 3-6-1. LCD Driving circuit Power Supply For LCD Valid Data Interface Signal (Tx) Option Signal (DCR_Enable) Lamp ON Power for Lamp Table 11. POWER SEQUENCE Value Parameter Unit 0 < T8 < T2 0 <...
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LC420WU1 Liquid Crystal Display Product Specification 3-6-2. On/Off for Inverter 24V (typ.) Power For Inverter 0.7V Enable (On/Off) 3-6-3. Deep condition for Inverter (Min) x 0.8 Table 12. POWER SEQUENCE FOR INVERTER Value Remark Parameter Unit After Inverter’s connected -100 (Min) x 0.8 16 / 30 Ver.
LC420WU1 Liquid Crystal Display Product Specification 4. Optical Specification Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 2 Hrs in a dark environment at 25±2°C. The specified optical values are measured at an approximate 50cm distance from the LCD surface on condition that viewing angle of Φ...
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LC420WU1 Liquid Crystal Display Product Specification Note : 1. Contrast Ratio(CR) is defined mathematically as : Surface Luminance with all white pixels Contrast Ratio = Surface Luminance with all black pixels Measure Position : Center 1-point 2. Surface Luminance( ) is the luminance value measured at an approximate 50cm distance from the center 1-point of LCD surface as all pixels displaying white.
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LC420WU1 Liquid Crystal Display Product Specification Measuring point for surface luminance & measuring point for luminance variation. ② ③ ① A : H / 4 mm ⑤ B : V / 4 mm ④ H : 930.24 mm V : 523.26 mm @ H,V : Active Area FIG.
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LC420WU1 Liquid Crystal Display Product Specification Dimension of viewing angle range Normal φ = 90 ° , Up φ = 180 ° , Left θ φ φ = 0 ° , Right φ = 270 ° , Down FIG. 4 Viewing Angle 20 / 30 Ver.
LC420WU1 Liquid Crystal Display Product Specification 5. Mechanical Characteristics Table 13 provides general mechanical characteristics. Table 15. MECHANICAL CHARACTERISTICS Item Value Horizontal 1005.6 mm Outline Dimension Vertical 609.8 mm Depth 55.5 mm Horizontal 939.0 mm Bezel Area Vertical 531.0 mm Horizontal 930.24 mm Active Display Area...
LC420WU1 Liquid Crystal Display Product Specification 6. Reliability Table 16. ENVIRONMENT TEST CONDITION Test Item Condition High temperature storage test Ta= 50°C 240h Low temperature storage test Ta= -20°C 240h High temperature operation test Ta= 40°C 50%RH 240h Low temperature operation test Ta= 0°C 240h Waveform : Random...
LC420WU1 Liquid Crystal Display Product Specification 7. International Standards 7-1. Safety a) UL 60950-1:2003, First Edition, Underwriters Laboratories, Inc., Standard for Safety of Information Technology Equipment. b) CAN/CSA C22.2, No. 60950-1-03 1 Ed. April 1, 2003, Canadian Standards Association, Standard for Safety of Information Technology Equipment. c) EN 60950-1:2001, First Edition, European Committee for Electrotechnical Standardization(CENELEC) European Standard for Safety of Information Technology Equipment.
LC420WU1 Liquid Crystal Display Product Specification 8. Packing 8-1. Designation of Lot Mark a) Lot Mark A,B,C : SIZE(INCH) D : YEAR E : MONTH F : PANEL CODE G : FACTORY CODE H : ASSEMBLY CODE I,J,K,L,M : SERIAL NO. Note 1.
LC420WU1 Liquid Crystal Display Product Specification 9. Precautions Please pay attention to the followings when you use this TFT LCD module. 9-1. Mounting Precautions (1) You must mount a module using holes arranged in four corners or four sides. (2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not applied to the module.
LC420WU1 Liquid Crystal Display Product Specification 9-3. Electrostatic Discharge Control Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that treatment persons are connected to ground through wrist band etc. And don’t touch interface pin directly. 9-4.
Appendix A : Inverter Input Voltage Protection Circuit The CAS is only defined as spec-in parameters, so LPL and Philips agree to make an appendix for inverter input voltage circuit application in terms of LC420WU1-SL01 1.Input Voltage Protection Circuit definition Input Voltage Protection Circuit perceive abnormal input voltage coming at the Master &...
Appendix B : Black Level and Black Uniformity It is not available to be specified black level and black uniformity on the spec at this moment. So LPL will get more actual data for the future production(LC420WU1-SL01). 1. Black Level : Surface Luminance of Black (L ) is the luminance value at center 1-point.
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Spare part list for LCT42Z6TM Item Part Number Part Description Usage / unit Unit Key/Spare LCT42AEMIA1PS-A01 AKAI 42" MONITOR LCT42AE (LCT42Z6TM)(B) S-MST9U89AL LPL(LC420WU1-SLB1 V1.0) HORIZONTAL AC120V/60HZ USA SILVER/BLACK 1> 510-L42AE02-01BK HORIZONTAL CARTON BOX 1.000000 Piece AKAI LCT42Z6TM S-MT9U89AL W/ PHOTO CARD USA K 2>...
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Spare part list for LCT42Z6TM 18> 521-950155-01 FELT PAPER 950X15X0.5MM W/ 2.000000 Piece ADHESIVE 19> 522-421D01-01 MASKING PAPER 1.000000 Piece 20> 560-L42AE01-03AP MODEL LABEL AKAI LCT42Z6TM 1.000000 Piece (B) MST9U89AL USA P 21> 563-119- SERIAL NO. LABEL 1.000000 Piece 22>...
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PROGRAM guide for model:LCT42Z6TM: Step 1 : Use the cable adaptor ( show in photo 1 ) Printer port plug connect to your PC,the VGA Jack connect to LCT42Z6TM Monitor VGA socket. photo 1 Step 2 : Expend “ISP_tool.rar”, then run “ISP_tool V4.0.5.exe ” program with your PC.
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Step 3: Click “Read” button and select “MST_FLASH_512.Bin” file to load CODE data. photo 3 Step 4: Click“Connect”Button,connect your PC photo 4 :if connecting fail, it will show a message like the photo 5 Notice 74/75...
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photo 5 Step 5: when all of the step is correct to run,Click“Auto”Button,it will go to the Program state, then Click“Run”Button, it will finish the installation automatic Notice: if this step fail, press “run” button again, till the installation is ok photo 6 Step 6:...
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