Akai LCT2715 Service Manual
  1. Manuals
  2. Brands
  3. Akai Manuals
  4. LCD TV
  5. LCT2715
  6. Service manual

Akai LCT2715 Service Manual

27"
Hide thumbs Also See for LCT2715:
Table of Contents

Advertisement

Quick Links

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LCT2715 and is the answer not in the manual?

Questions and answers

Related Manuals for Akai LCT2715

Summary of Contents for Akai LCT2715

  • Page 2: Service Manual

    SERVICE MANUAL Model: LCT2715 Safety Instructions Production specification. Block Diagram Circuit Diagram Disassembly Pin Descriptions LCD Panel specification Exploded View Diagram Spare parts list V-chip password and software upgrade This manual is the latest at the time of printing, and does not include the modification which may be made after the printing, by the constant improvement of product.
  • Page 3 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 the user to the presence of uninsulated “ dangerous CAUTION voltage”...
  • Page 4 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 TV vacuum and if bro ken, the gl ass will explode. receiver have special safety-related characteristics.

  • Page 5: Product Specification

    Revision Date : 2005.08.1 Page : P.1 of 8 Model No. : LC27HAB Customer Model No. : LCT2715 Design Code : LC27HABCUSXM1-A01 BOM No. : LC27HABCUSXM1-A01 Artwork Ass'y No. : 580-L26ABHM-TU02L Description : AKAL LCD TV 26” NTSC AC100V-240 V AC USA...
  • Page 6 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 2 of 8 General Description Main features Production Description AKAL LCD TV 27” NTSC AC100V-240VAC USA Panel Supplier and Model CHIMEI V270B1-L01 Chips Solution MK8205 Market 1.1 VIDEO SECTION...
  • Page 7 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 3 of 8 Stereo Decode MTS with SAP Power Rating AC 100-240V, 50/60Hz Power Consumption 200W 1.6 Support the Signal Mode This machine can support the different from VGA signal mode in 19 kinds Resolution Horizontal Vertical...
  • Page 8 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 4 of 8 2. LCD local control button Main power : push switch Channel +/- volume up/down menu input. standby : soft touch 3.
  • Page 9 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 5 of 8 Technical Data 1. Chassis MICO 2. Power supply AC 100-240 V, 50/60Hz Remote controller Battery 3V (UM-4/R03/AAA×2) 3. TV system RF input NTSC M Video input...
  • Page 10 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 6 of 8 ： Electrical & Optical Specification Attachment 1 Items Instruction Typical Limit Unit ≤51 Video sensitivity For 30dB S/N dBuV ≤35 FM sound sensitivity For 30dB S/N dBuV...
  • Page 11 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 7 of 8 ≥5.0×2 Max Audio Output Power 7×2 ≥4.0×2 Audio output power 1KHz 10% THD 6×2 10% THD ≤3 Po=0.5W ≥30 Signal to buzz ratio coeighting ≤10 Minimum volume hum...
  • Page 12 KAWA ELECTRONIC RESEARCH & DEVELOPMENT CENTRE Reference No : LC27HAB001 Revision Date : 2005.8.1 Page : P. 8of 8 Test Condition All tests shall be performed under the following conditions unless otherwise specified Picture Modulation 87.5% Sound Modulation 27KHz Dev. For DK/I/BG 15KHz Dev.
  • Page 13 Flash LVDS SIGNAL Keypad LVDS SIGNAL LVDS PANEL Tuner S_Video GPIO Backlight GPIO MT8205 Y1PbPr AOSDATA1 COD_VOUTR Y2PbPr YPbPr DACBCLK Speaker DACMCLK Audio Board WM8776 DACLRC COD_VOUTL DOUT VGA_L/R S1_AV1_L/R Y1PbPr_L/R Y2PbPr_L/R DDR1 DDR2...
  • Page 14 MT8205P1V3.2 History Date V0.1 1.FIRST VERSION 2004/11/29 MT8205E (PBGA388) LCDTV BOARD 4 LAYERS 2005/03/09 V0.2 1. 2.5V use 5VSB conversion. All 0402 change to 0603 2. LED_RED/GRN CIRCUIT CHANGE 3. Change Power on/off circuit(ORO7 CTRL PIN) 1. INDEX 4. WM8776 DVDD Needed 5.
  • Page 15 Power ON alive source Vout CM1117-3.3V M1117-3.3V DV33 5VSB DV33 BEAD/SMD/0805 BEAD/SMD/0805 CB200 CE118 220uF/16v 220uF/16v 220uF/16v 0.1uF 220uF/16v CB201 0.1uF SOT223/SMD 0.1uF SOT223/SMD 0.1uF DV33A Vout DV33A CM1117-1.8V DV18A CM1117-3.3V AV33 DV18A AV33 BEAD/SMD/0805 CE11 CE12 BEAD/SMD/0805 CE10 100uF/16v 220uF/16v 220uF/16v 0.1uF...
  • Page 16 VI[0..23] VI[0..23] XTALI DVIODCK XTALI DVIODCK XTALO DV33A DVIDE XTALO DVIDE DVIHSYNC DVIHSYNC DVIVSYNC DVIVSYNC DVISCL DVISCL DVISDA DVISDA 1N4148/SMD URST# URST# 6,15 URST# A_DQS[0..3] A_DQS[0..3] A_RA[0..11] A_RA[0..11] A_BA[0..1] A_BA[0..1] ANALOGVDD A_DQM[0..1] A_DQM[0..1] 7 ANALOGVDD A_DQ[0..31] A_DQ[0..31] A_CLK A_CLK ADCVDD CE21 A_CLK# A_CLK#...

  • Page 17: Mt8205 Analog Decoupling

    MT8205 ANALOG DECOUPLING DACVREF DACVREF DV18A DACFS 100k DACFS DACVREF DACFS DV18A ADCPLLVDD1 CB14 ADCPLLVDD1 XTALI XTALO BEAD/SMD/0603 4.7uF 0.1uF ADCPLLVDD1 0.1uF/NC C0603/SMD C0603/SMD FOR DACVDD C0603/SMD 27MHz ADCPLLVDD ADCPLLVDD 33pF 33pF AV33 APLLVDD DV33A APLLVDD AV33 DACVDD ANALOGVDD CE23 CB15 CB16 CB17...
  • Page 18 MT8205 DIGITAL POWER & DECOUPLING DV33A 0603 PUT ON NEARLY BGA DV18A DV18A 0603 PUT ON NEARLY BGA 0603 PUT ON NEARLY BGA CB61 CB62 CB69 CB70 CB71 CB72 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF C0603/SMD C0603/SMD C0603/SMD C0603/SMD CB68 0.1uF 0.01uF 3300pF...
  • Page 19 R311 1,9,11,13 1,9,11,13 RN38 IOA0 IOA[0..7] IOA1 IOA[0..7] IOA2 IOA3 RN39 IOA4 IOA5 IOA6 IOWR# IOA7 IOWR# IOCE# IOCE# PWR# PWR# R314 IOWR# PWR# PCE# PCE# R315 IOCE# PCE# A[0..7] A[0..7] F_A[8..21] F_A[8..21] RN40 8205UP3_0 UP3_0 UP1_2 8205UP3_1 UP3_1 UP1_2 UP1_6 8205UP3_4 UP3_4...

  • Page 20: Ddr Memory & Flash

    SDV25 SDV25 F_D0 D1V25 F_D1 A_RA3 D_RA3 F_D2 A_RA2 D_RA2 D_DQ0 D_DQ15 F_D3 DQ15 A_RA1 D_RA1 D_RA0 F_D4 VDDQ VSSQ A_RA0 D_RA0 D_DQ1 D_DQ14 D_RA1 F_D5 DQ14 D_DQ2 D_DQ13 D_RA2 F_D6 DQ13 22x4 D_RA3 F_A8 F_D7 VSSQ VDDQ A_RA4 D_RA4 D_DQ3 D_DQ12 F_A9...

  • Page 21: Vga In&Pc Audio In

    VGA_PLUGPWR DIODE SMD 1N4148/SMD VGA_PLUGPWR VGA_PWR VGA_PLUGPWR VGA_PLUGPWR DIODE SMD 1N4148/SMD CB157 R115 R116 0.1uF VGASCL VGA_IN_L VGA_IN_L VGASDA VGA_IN_R VGA_IN_R EEPROM 24C02 VGA_R CE100 10uF/25v R323 VGA_IN_R VGASDA VGASDA VGASCL VGASCL VGA_L CE101 10uF/25v R324 VGA_IN_L PHONEJACK STEREO PHONEJACK/DIP HSYNC_VGA VGAHSYNC# VSYNC_VGA...
  • Page 22 CVBS0---TUNER1 CVBS1---FRONT BD AV_IN CVBS2---AV BD (AV/S-V) IN SY_IN Y_GND AV , TUNER I/O Y_GND TUNER_12V TUNER_12V CB_GND CB_GND CON\SVHS TU_VCC SY_GND SC_IN SY_IN TU_12V CR_GND CR_GND SIF1_OUT SC_IN SY_GND AF1_OUT SY_GND TV_GND TU VCC FOR TUNER POWER USE SC_GND CON12 SC_GND OGO3 FOR AV SWITCH IO-1...

  • Page 23: Audio / Video In Circuit

    VGASOG VGASOG RED+ R338 RED+ R348 R160 RED- CVBS0 R166 CVBS0+ RED- 47nF GREEN+ 47nF R161 C162 GREEN+ 30pF R168 GREEN- C168 GREEN- 330pF R339 R349 Y_GND BLUE+ CVBS0_GND CVBS0- BLUE+ BLUE- 47nF BLUE- 47nF R340 R164 R350 CVBS1 R170 CVBS1+ 47nF R165...
  • Page 24 Del Parts HPVDD VGA_IN_L VGA_IN_L TP17 C117 VGA_IN_R DVI_R R212 CB161 VGA_IN_R 0.1uF R213 SCL14 TP18 DVI_L R214 10uF/25v R215 SDA14 S1_AV1_L S1_AV1_L VGA_IN_R R216 S1_AV1_R S1_AV1_R VGA_IN_L R217 S1_AV1_R CE108 10uF/25v R218 HPVDD S1_AV1_L CE109 10uF/25v R221 Del Parts TP16 YPBPR1_R CE110...
  • Page 25 LVDS OUT CLK1- CLK1+ CLK2- CLK2+ +12V LVDS LVDSVDD LVDSVDD BEAD/SMD/0805 4A/?v FUSE/DIP/P10.0 CE86 FI-SE30P-HF JP2X2/DIP/P2.54 330uF/25v LVDS/30P/P1.25/S C330UF25V/D8H14 CE87 CE88 220uF/16v 220uF/16v CB185 CB186 0.1uF 0.1uF R277 GPIO CRT OUT RED_OUT R278 0.082uH L/IND/SMD/0603 CLK1+ 75 1% C149 C150 CLK1+ CLK1- CLK1-...
  • Page 26 PANEL INVERTER POWER UP1_2 UP1_2 UP3_1 UP3_1 OBO0 OBO0 Inverter_PWR Inverter_PWR OBO1 OBO1 FOR CHI-MEI INVERTER OBO2 OBO2 CONNECTOR OBO3 470uF/50v 470uF/50v 470uF/50v 0.1uF 0.1uF OBO3 URST# URST# OBO4 PWR_GND OBO4 OBO5 OBO5 OBO6 OBO6 OBO7 OBO7 Inverter_PWR R336 UP3_0 UP3_0 R285 PWM0...
  • Page 27 TUNER1 IN Date ADDRESS TUNER1 TUNER FQ1236 / : NTSC TV AV , TUNER I/O FQ1236-MK3 TU_VCC TU_12V SIF1_OUT TU_CVBS AF1_OUT TV_GND CON12 TV_GND GNDS GNDS GNDS TU_SCL GNDS GND HOLE GND HOLE TU_SDA SIF1_IN TU_CVBS GNDS AF1_IN GNDS GNDS TUNER1 SIF1 BPF SIF_12V NTSC 4.5MHz PAL 6MHz...
  • Page 28 22pF +24V +24V 100K 100NF 100UF/25V 100K 4.7uF 100UF/25V 22UF/16V 4.7nF 100NF FILM PGND 10uH AUSPL AGND 1000UF/25V RC4558 10UF 10K 5% AGND ATA-120 100K MUTEC 470NF MBRS130LTR 22pF 2.2UF 100NF 6.2V 390PF 22pF +24V +24V 100K 100K 4.7uF 100UF/25V 22UF/16V 4.7nF 100NF...
  • Page 29 MUTEC +24V 2N3906 2N3904 MUTE 1N4148 2N3904 100UF/25V AGND AGND AGND AGND LOUT 1N4148 4.7V 2N3904 AGND 2N3906 MUTEB ROUT 2N3904 AGND AGND 220UF/25V 1N4148 +24V AGND 100U/35V 100N MUTE 22U/16V 10U/16V AUSPL 10UF RC4558 AGND 100K AGND AGND LOUT ROUT rca2 +24V...
  • Page 30 1KV 470P STTH3L06 NTC1 V_BUKE 100R 2W 10UH V_BUKE +24V 400UH PQ32-20 2.5R STTH8R06 +24V4A 100R 2W 1.8M 750K 10mH 10mH 1.6M C15 C16 250VAC 5A +12V 25V 1U 1.6M 750K 0.1U 1KV 470P 1.8M 1.6M 680NF 470R/1W 0.33 1.6M 0.33U $0.28 +24V1A...
  • Page 31 Basic Operations & Circuit Description Main Electric Components (1). MODULE: There are 1 pc. panel and 2 pcs. PCB including 1 pc. INVERTER board(L), 1 pc. T-CONTROL board, (2).SIGNAL PROCESS There are 4 pcs. PCBs including 1 pc. Audio&Tuner board, 1 pc.
  • Page 32 PCB function 1. Power: (1). Input voltage: AC 100V~240V, 47Hz~63Hz. Input range: AC 90V(Min)~264V(Max) auto regulation. (2). To provide power for PCBs. a). +24V for Inverter. b). +5Vsb for standby, c). +5V for signal power, d). +24V for Audio Amp power and converter to e).
  • Page 33 PCB failure analysis 1. CONTROL: a. Abnormal noise on screen. b. No picture. 2. MAIN (VIDEO): a. Lacking color, Bad color scale. b. No voice. c. No picture but with signals output, OSD and back light. d. Abnormal noise on screen. 3.
  • Page 34 LCD basic display theory. When an electrical field is applied to the LC planes, the LC molecules re-align themselves so that they are parallel to the electrical field. This electrical process is known as twisted nematic field effect or TNFE. In this alignment, polarized light is not twisted as it passes through the LC material (see Diagram 3A and 3B).
  • Page 35 Disassembly In case of trouble, etc., Necessitating disassemble, please disassemble in the order shown in the illustrations. Reassemble in the reverse order. 1. Removal of the Back Cover 2. Removal of the MAIN PCB a. Remove the screws. Slide out the LCD chassis slightly; pull up the connector of AC cord from PCB; pull up the PCB from LCD.
  • Page 36 IC DESCRIPTION -MT8205G -AT24C02 -MX29LV160BBTC -LP2996 -AZ1117/H -WM8776 -MX232A -ISAV330...
  • Page 37 Pinout information VFEVDD1 DE_DVI ADCVDD4 VSYNC_DVI HSYNC_DVI DVDD18 ADCVSS4 AOSDATA0 REFP4 AOSDATA1 REFN4 AOSDATA2 ADCVSS DVDD3I ADIN4 AOSDATA3 ADIN3 ADIN2 AOBCK ADIN1 AOLRCK ADIN0 AOMCLK ADCVDD DVSS3 PWM2VREF DQ24 AUXVTOP DQ25 AUXVBOTTOM DQ26 VPLLVSS DVDD2 VPLLVDD DQ27 DLLVDD DQ28 DLLVSS DVSS2 BGVSS DQ29...
  • Page 38 Pin Descriptions 2.3 Pin Descriptions Table 2-1 provides detail video/audio port pin descriptions. Table 2-1 video/audio port pin descriptions. Symbol Type Description Audio out master clock AOMCLK Audio out left-right clock AOLRCK Audio out bit clock AOBCK Audio out data line 0 AOSDATA0 Audio out data line 1 AOSDATA1...

  • Page 39: Pin Configurations

    AT24C01A/02/04/08/16 Features • Low Voltage and Standard Voltage Operation 5.0 (V = 4.5V to 5.5V) 2.7 (V = 2.7V to 5.5V) 2.5 (V = 2.5V to 5.5V) 1.8 (V = 1.8V to 5.5V) • Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K), 1024 x 8 (8K) or 2048 x 8 (16K) •...
  • Page 40 Absolute Maximum Ratings* *NOTICE: Stresses beyond those listed under “Absolute Maxi- Operating Temperature....-55°C to +125°C mum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the Storage Temperature...... -65°C to +150°C device at these or any other conditions beyond those indi- cated in the operational sections of this specification is not Voltage on Any Pin...
  • Page 41 MX29LV160BT/BB 16M-BIT [2Mx8/1Mx16] CMOS SINGLE VOLTAGE 3V ONLY FLASH MEMORY FEATURES erase operation completion. • Extended single - supply voltage range 2.7V to 3.6V • Ready/Busy pin (RY/BY) • 2,097,152 x 8/1,048,576 x 16 switchable - Provides a hardware method of detecting program or •...
  • Page 42 November 2003 LP2996 DDR Termination Regulator General Description Features n Source and sink current The LP2996 linear regulator is designed to meet the JEDEC SSTL-2 specifications for termination of DDR-SDRAM. The n Low output voltage offset device contains a high-speed operational amplifier to provide n No external resistors required excellent response to load transients.
  • Page 43 TS5V330 QUAD SPDT WIDE BANDWIDTH VIDEO SWITCH WITH LOW ON STATE RESISTANCE SCDS164A – MAY 2004 − REVISED MAY 2004 Low Differential Gain and Phase D, DBQ, OR PW PACKAGE (TOP VIEW) = 0.64%, D = 0.1 Degrees Typ) Wide Bandwidth (BW = 300 MHz Min) Low Crosstalk (X = −63 dB Typ) TALK...
  • Page 45 19-0175; Rev 3; 5/96 ±15kV ESD-Protected, +5V RS-232 Transceivers _______________General Description ____________________________Features The MAX202E–MAX213E, MAX232E/MAX241E line ESD Protection for RS-232 I/O Pins: drivers/receivers are designed for RS-232 and V.28 ±15kV—Human Body Model communications in harsh environments. Each ±8kV—IEC1000-4-2, Contact Discharge transmitter output and receiver input is protected ±15kV—IEC1000-4-2, Air-Gap Discharge against ±15kV electrostatic discharge (ESD) shocks,...
  • Page 46 ±15kV ESD-Protected, +5V RS-232 Transceivers Table 3. DB9 Cable Connections Commonly Used for EIA/TIAE-232E and V.24 Asynchronous Interfaces CONNECTION Received Line Signal Detector (sometimes Handshake from DCE called Carrier Detect, DCD) Receive Data (RD) Data from DCE Transmit Data (TD) Data from DTE Data Terminal Ready Handshake from DTE...
  • Page 47 TFT LCD Preliminary Specification MODEL NO.: V270B1 - L01 LCD TV Head Division ³¢®¶¶© TVHD / PDD QRA Dept. DDIII DDII Approval Approval Approval Approval ³¯¥Ã¤@ §õ¨L¬v ÂŤåÀA ªL¤åÁo LCD TV Marketing and Product Management Division ³¯¥ß©y Áªکy Product Manager...

  • Page 48: Table Of Contents

    - CONTENTS - REVISION HISTORY ------------------------------------------------------- 1. GENERAL DESCRIPTION ------------------------------------------------------- 1.1 OVERVIEW 1.2 FEATURES 1.3 APPLICATION 1.4 GENERAL SPECIFICATIONS 1.5 MECHANICAL SPECIFICATIONS 2. ABSOLUTE MAXIMUM RATINGS ------------------------------------------------------- 2.1 ABSOLUTE RATINGS OF ENVIRONMENT 2.2 ELECTRICAL ABSOLUTE RATINGS 2.2.1 TFT LCD MODULE 2.2.2 BACKLIGHT UNIT 3.

  • Page 49: Revision History

    REVISION HISTORY Page Version Date Section Description (New) Ver 1.0 Jun. 15,’05 Preliminary Specification was first issued.

  • Page 50: General Description

    1. GENERAL DESCRIPTION 1.1 OVERVIEW V270B1- L01 is a TFT Liquid Crystal Display module with 14-CCFL Backlight unit and 1ch-LVDS interface. The display diagonal is 27”. This module supports 1366 x 768 WXGA format and can display true 16.7M colors(8-bits colors). The inverter module for backlight is built-in. 1.2 FEATURES - Excellent brightness (550 nits) - Ultra high contrast ratio (1000:1)

  • Page 51: Absolute Maximum Ratings

    2. ABSOLUTE MAXIMUM RATINGS 2.1 ABSOLUTE RATINGS OF ENVIRONMENT Value Item Symbol Unit Note Min. Max. Storage Temperature ºC Operating Ambient Temperature ºC (1), (2) Shock (Non-Operating) (3), (5) Vibration (Non-Operating) (4), (5) Note (1) Temperature and relative humidity range is shown in the figure below. (a) 90 %RH Max.

  • Page 52: Electrical Absolute Ratings

    2.2 ELECTRICAL ABSOLUTE RATINGS 2.2.1 TFT LCD MODULE Value Item Symbol Unit Note Min. Max. Power Supply Voltage -0.3 Input Signal Voltage -0.3 2.2.2 BACKLIGHT UNIT Test Item Symbol Min. Type Max. Unit Note Condition Ta = 25 ¢J ¡Ð ¡Ð...

  • Page 53: Electrical Characteristics

    3. ELECTRICAL CHARACTERISTICS Ta = 25 ± 2 ºC 3.1 TFT LCD MODULE Value Parameter Symbol Unit Note Min. Typ. Max. Power Supply Voltage Power Supply Ripple Voltage Rush Current RUSH White Power Supply Current Black Vertical Stripe 1.65 Differential Input High +100 LVTH Threshold Voltage...

  • Page 54: Backlight Inverter Unit

    Note (3) The specified power supply current is under the conditions at Vcc = 5 V, Ta = 25 ± 2 ºC, f = 60 Hz, whereas a power dissipation check pattern below is displayed. b. Black Pattern a. White Pattern Active Area Active Area c.

  • Page 55: Inverter Characteristics

    3.2.2 INVERTER CHARACTERISTICS ( Ta = 25 ± 2 ºC) Value Parameter Symbol Unit Note Min. Typ. Max. Power Consumption (5), I = 4.7mA 22.8 25.2 Power Supply Voltage Power Supply Current Non Dimming Input Ripple Noise =22.8V Backlight Turn on 1790 Ta = 0 ºC Voltage...

  • Page 56: Inverter Intertface Characteristics

    Note (4) The life time of a lamp is defined as when the brightness is larger than 50% of its original value and the effective discharge length is longer than 80% of its original length (Effective discharge length is defined as an area that has equal to or more than 70% brightness compared to the brightness at the center point.) as the time in which it continues to operate under the condition Ta = 25 ¡Ó...
  • Page 57 Note (2) The power sequence and control signal timing are shown as the following figure. Toff 2.0V BLON 0.8V Backlight on duration 2.0V Int. Dimming Function 0.8V Ext. Dimming Function PWMF PWMR 2.0V EPWM 0.8V 3.0V IPWM External External PWM Duty Period Minimun 100%...

  • Page 58: Block Diagram

    4. BLOCK DIAGRAM 4.1 TFT LCD MODULE FRAME BUFFER TFT LCD PANEL RX0(+/-) (1366x3x768) RX1(+/-) RX2(+/-) TIMING RX3(+/-) CONTROLLER RXCLK(+/-) DATA DRIVER IC DC/DC CONVERTER & REFERENCE VOLTAGE BACKLIGHT CN3-CN9:SM02 (8.0)B-BHS-1-TB(LF)(JST) UNIT INVERTER CONNECTOR CN1:S10B-PH-SM3-TB(D)(LF)(JST) CN2: S12B-PH-SM3-TB(D)(LF)(JST) E_PWM I_PWM BLON CN10: S2B-ZR-SM3A-TF (D)(LF)(JST)

  • Page 59: Interface Pin Connection

    5. INTERFACE PIN CONNECTION 5.1 TFT LCD MODULE CNF1 Connector Pin Assignment Pin No. Symbol Description Note Ground Display Rotation SELLVDS Select LVDS data format No Connection No Connection ODSEL Overdrive Lookup Table Selection EN LCS Low Color Shift Ground RX0- Negative transmission data of pixel 0 RX0+...

  • Page 60: Backlight Unit

    5.2 BACKLIGHT UNIT The pin configuration for the housing and leader wire is shown in the table below. CN3-CN9 (Housing): BHR-03VS-1 (JST) Pin No. Symbol Description Wire Color High Voltage Pink High Voltage White Note (1) The backlight interface housing for high voltage side is a model BHR-03VS-1, manufactured by JST. The mating header on inverter part number is SM02(8.0)B-BHS-1-TB(LF) or equivalent.

  • Page 61: Inverter Unit

    5.3 INVERTER UNIT CN1(Header):S10B-PH-SM3-TB(D)(LF)(JST) or equivalent. Name Description +24V Power input Ground CN2(Header): S12B-PH-SM3-TB(D)(LF)(JST) or equivalent. Name Description +24V Power input Ground Internal/external PWM selection High : external dimming Low : internal dimming External PWM control signal E_PWM E_PWM should be connected to low when internal PWM was selected (SEL = low).

  • Page 62: Block Diagram Of Interface

    5.4 BLOCK DIAGRAM OF INTERFACE CNF1 Rx0+ 51£[ RxOUT Rx0- 100pF TxIN R0-R7 R0-R7 51£[ Rx1+ G0-G7 51£ [ G0-G7 Rx1- 100pF 51£[ B0-B7 B0-B7 Rx2+ 51£[ Rx2- 100pF 51£[ Rx3+ 51£[ Rx3- 100pF 51£[ Host CLK+ 51£[ Graphics DCLK 100pF CLK- Controller...

  • Page 63: Lvds Interface

    5.5 LVDS INTERFACE TRANSMITTER INTERFACE RECEIVER TFT CONTROL SIGNAL THC63LVDM83A CONNECTOR THC63LVDF84A INPUT SELLVDS SELLVDS SELLVDS SELLVDS INPUT Host TFT-LCD OUTPUT TxIN0 Rx OUT0 TxIN1 Rx OUT1 TxIN2 TA OUT0+ Rx 0+ Rx OUT2 TxIN3 Rx OUT3 TxIN4 Rx OUT4 TxIN6 TA OUT0- Rx 0-...

  • Page 64: Color Data Input Assignment

    5.6 COLOR DATA INPUT ASSIGNMENT The brightness of each primary color (red, green and blue) is based on the 8-bit gray scale data input for the color. The higher the binary input, the brighter the color. The table below provides the assignment of color versus data input.

  • Page 65: Interface Timing

    6. INTERFACE TIMING 6.1 INPUT SIGNAL TIMING SPECIFICATIONS The input signal timing specifications are shown as the following table and timing diagram. Signal Item Symbol Min. Typ. Max. Unit Note Frequency 1/Tc Input cycle to LVDS Receiver Clock Trcl cycle jitter Setup Time Tlvsu LVDS Receiver Data...
  • Page 66 LVDS RECEIVER INTERFACE TIMING DIAGRAM RXCLK+/- RXn+/- Tlvsu Tlvhd 11 T...

  • Page 67: Power On/Off Sequence

    6.2 POWER ON/OFF SEQUENCE To prevent a latch-up or DC operation of LCD module, the power on/off sequence should be as the diagram below. 0.9 V 0.9 V Power Supply 0.1Vcc 0.1V ¡Ø10ms 0¡ Ø T ¡Ø50ms 0¡ Ø T ¡Ø50ms 0¡...

  • Page 68: Optical Characteristics

    7. OPTICAL CHARACTERISTICS 7.1 TEST CONDITIONS Item Symbol Value Unit Ambient Temperature 25±2 Ambient Humidity 50±10 Supply Voltage Input Signal According to typical value in "3. ELECTRICAL CHARACTERISTICS" Lamp Current 4.7 ± 0.5 Oscillating Frequency (Inverter) 56 ± 3 7.2 OPTICAL SPECIFICATIONS The relative measurement methods of optical characteristics are shown in 7.2.
  • Page 69 Note (1) Definition of Viewing Angle (θx, θy): Viewing angles are measured by EZ-Contrast 160R (Eldim) Normal θx = θy = 0º θy- θ 12 o’clock direction θ = 90º θx− θ = 90º θx+ 6 o’clock θ = 90º = 90º...

  • Page 70: Lcd Panel

    Note (4) Definition of Luminance of White (L Measure the luminance of gray level 255 at center point and 5 points = L (5) = [L (1)+ L (2)+ L (3)+ L (4)+ L (5)] / 5 L (x) is corresponding to the luminance of the point X at the figure in Note (7). Note (5) Definition of Cross Talk (CT): CT = | Y –...
  • Page 71 Note (7) Definition of White Variation (δW): Measure the luminance of gray level 255 at 5 points δW = Maximum [L (1), L (2), L (3), L (4), L (5)] / Minimum [L (1), L (2), L (3), L (4), L (5)] Horizontal Line 3D/4 : Test Point...

  • Page 72: Definition Of Labels

    8. DEFINITION OF LABELS 8.1 CMO MODULE LABEL The barcode nameplate is pasted on each module as illustration, and its definitions are as following explanation. E207943 CHI MEI V270B1 -L01 Rev. XX MADE IN TAIWAN OPTOELECTRONICS X X X X X X X Y M D L N N N N (a) Model Name: V270B1-L01 (b) Revision: Rev.

  • Page 73: Packaging

    9. PACKAGING 9.1 PACKING SPECIFICATIONS (1) 4 LCD TV modules / 1 Box (2) Box dimensions : 742(L) X 327 (W) X 510 (H) (3) Weight : approximately 19Kg ( 4 modules per box) 9.2 PACKING METHOD Figures 9-1 and 9-2 are the packing method LCD TV Module Carton dimensions: 742(L)x327(W)x510(H)mm Anti-Static Bag...
  • Page 74 Corner Protector:L1020*50mm*50mm Pallet:L1100*W1100*H135mm Corrugated Fiberboard:L1100*W1100mm Pallet Stack:L1100*W1100*H1160mm Gross:168kg PE Sheet Carton Label Film PP Belt Figure. 9-2 packing method...

  • Page 75: Precautions

    10. PRECAUTIONS 10.1 ASSEMBLY AND HANDLING PRECAUTIONS (1) Do not apply rough force such as bending or twisting to the module during assembly. (2) It is recommended to assemble or to install a module into the user’s system in clean working areas. The dust and oil may cause electrical short or worsen the polarizer.

  • Page 76: Mechanical Characteristics

    11. MECHANICAL CHARACTERISTICS...
  • Page 79 PCB ASSY POWER200 BOARD FOR 27" LCD E7802-004003 PCB ASSY TUNER AMP BOARD FOR 27" LCD 二, MECH PART 200-26LA21-04AV CABINET FRONT AKAI BLK LCT2715 (MICO 202-26LA11-01AV BACK CABINET 26LA A (470+70%) 206-26LA01-01PV THE BACK COVER SPEAKER 26LA P (470...
  • Page 80 SERIAL NO. LABEL 579-LC2701-03 UPC LABEL (50X23)MM OF UNIT LCT2715( 579-LC2702-03 UPC LABEL OF G/B LCT2715 MICO) 580-L26ABHM-TU01 IB E FOR AKAI LC26HAB CMO MICO USA 590-LC2701-03 INSERTION CARD AKAI LC26HAB 590-LC2701-04 WARRANTY CARD AKAI LCT2715 216X279MM 601-305008-00 MACH.SCREW CTS 3X8...

  • Page 81: Software Upgrade

    If you forget your V-Chip Password - Omnipotence V-Chip Password: 8205. - Press MENU button. - Press LEFT RIGHT buttons to highlight "MISC" Menu. - Press Up, Down buttons to highlight "Parentald". - Press ENTER button to pop up "Input your Password Please". - Use the Number buttons (0~9) to enter an omnipotence Password.
  • Page 82 Software upgrade Process - Power Switch OFF. - Connect the serial port of the control device to the RS-232 jack on the LCD-TV back panel. RS-232C connection cables are not supplied with the LCD-TV. - Power Switch ON. The power indicator on the front of the panel should now display red, means that the LCD-TV is in standby mode.

This manual is also suitable for:

Lc27hab

Table of Contents