Eiki EK-700LU Series Service Manual
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Eiki EK-700LU Series Service Manual

Laser projector
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Laser Projector
Service Manual
Model: EK-700LU~series

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Summary of Contents for Eiki EK-700LU Series

  • Page 1 Laser Projector Service Manual Model: EK-700LU~series...

  • Page 2: Table Of Contents

    Content Content ..............2 Safety instruction ........... 3 Safety Cautions ........... 4 Safety precautions ..........8 Circuit protection ............ 9 How to replace the fuse ........9 Specification ............10 Specification ............. 10 Indicator status ..........11 Maintainance ............14 Cleaning the Filter ..........

  • Page 3: Safety Instruction

    Safety instruction Technicians need to read and follow the "safety precautions" and "important safety tips" strictly in the service manual in the maintenance process. Caution The service manual is only for experienced technicians, rather than the general public. The service manual does not include the warning about the non-technicians or to inform the danger they may occur in the maintenance process.

  • Page 4: Safety Cautions

    Safety instruction Safety Cautions Precautions Please read this manual carefully before using your NEC projector and keep the manual handy for future reference. Ignoring messages indicated by this symbol may lead to personal injuries or deaths due to Caution human errors. Note Ignoring messages indicated by this symbol may lead to personal injuries or property damage.
  • Page 5 Safety instruction PROHIBIT About the projector’s light source – Do not look into the projector’s lens. Strong light that could damage your eyes is projected when the projector is operating. Be especially careful when children are around. – Do not look at the projected light using optical devices (magnifying glasses, reflectors, etc.). Doing so could result in vision impairment.
  • Page 6 Safety instruction – The projector must be installed by qualified technicians in order to ensure proper operation and reduce the risk bodily injury. – In addition, the ceiling must be strong enough to support the projector and the installation must be in accordance with any local building codes.
  • Page 7 Safety instruction • Do not splash water over the projector. Doing so can cause electrical shock or fire. If the projector gets wet, turn off the projector, unplug the power cord and have the projector serviced by a qualified service personnel. •...

  • Page 8: Safety Precautions

    Safety instruction Safety precautions 1.1 General policy: – DO NOT attempt to make a circuit modification for the sake of safety for long. – Unplug the power cord from the power outlet before removing the projector. – Please use the random supply line correctly, and make sure that the line must be earthed. –...

  • Page 9: Circuit Protection

    Circuit protection The projector has the following security operation circuit protection functions. If there is any abnormal in the inside of the projector, one of the following protection circuit action will make your projector shut down automatically . Fuse (F0001) The fuse is placed inside the projector and on the Power Board.

  • Page 10: Specification

    Specification Specification Mechanical properties Dimensions (W×H×D ): 405x137x358mm Net Weight ~7.9Kg Adjustable foot 3.5˚ LCD resolution LCD system 0.64"x3（EK-700LUL/EK-700LU) TFT, active matrix LCD resolution EK-700LUL/EK-700LU (1920 x 1200) Compatible signals Color standard PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N,PAL-60 HDTV signal 480i, 480p, 576i, 576p, 720p, 1035i and 1080i Scanning frequency Horizontal frequency: 15 kHz–100 KHz;...

  • Page 11: Indicator Status

    Specification Indicator status When the temperature inside the projector is too high or the cooling fan stops rototating or loss of power , the projector will shut down automatically. ① POWER indicator This indicator informs the power status of the projector. ②...
  • Page 12 Specification Indicator Message (Error message) POWER STATUS LIGHT Projector status Procedure A button has been pressed while the KEY LOCK is The projector's keys are locked. The activated. setting must be canceled to operate the projector. Orange (Light) ID numbers for the projector and the remote con- Check the control IDs trol do not match.
  • Page 13 Specification *1 Repetition to light on for 1.5 seconds / off for 1.5 seconds *2 Repetition to light on for 1.5 seconds / off for 7.5 seconds *3 Repetition to light on for 2.5 seconds / off for 0.5 seconds *4 Repetition to light on for 0.5 seconds / off for 0.5 seconds •...

  • Page 14: Maintainance

    Maintainance This section describes the simple maintenance procedures you should follow to clean the filter, the lens, the cabinet, and to replace the light source and the filter. Cleaning the Filter The air-filter sponge keeps dust and dirt from getting inside the projector and should be frequently cleaned. If the filter is dirty or clogged, your projector may overheat.
  • Page 15 Maintainance 4. Attach the filter to the filter cover. Catch NOTE: • When installing the filter, please make sure that the catch of the filter is facing outwards, otherwise the in- stallation is reversed. 5. Put the filter cover back to the projector cabinet. Catch Insert the three catches of the tip of the filter cover into the groove of the cabinet, and then push the A button to close the filter cover.

  • Page 16: Cleaning The Lens

    Maintainance Cleaning the Lens • Turn off the projector before cleaning. • The projector has a plastic lens. Use a commercially available plastic lens cleaner. • Do not scratch or mar the lens surface as a plastic lens is easily scratched. •...

  • Page 17: How To Check The Light Source Usage Time

    Maintainance How to check the light source usage time It time to replace the light source when the light source usage time (Corresponding value) come to 20,000 hours. Use the following formula to calculate the light source time . Light source usage time (Corresponding value)=Teco 2 +Teco 1 +Tnormal x 1.5 Tnormal : Usage time in normal mode Teco 1...

  • Page 18: Safety Function Instruction

    Safety function instruction This projector provides Closed caption, Key lock and PIN code lock ensure your projector’s operation safety. Only when users enter the correct password can you open your projector when you has set up the three security features.You won't start the projector without password.

  • Page 19: Standby Mode Instruction

    Standby mode instruction The projector has two kinds of standby mode, namely Eco.mode and the Normal mode. In the two mode, the following functions will be limited as shown in the table. Please switch to Standby mode on the Setting menu. Sleep ..

  • Page 20: Mechanical Disassembly

    Mechanical disassembly Remove the mechanical groups according to the following procedure. Screw Description The following steps are the basic processes and some unnecessary (Type D x L) mm steps may be ignored. Tapping screw-T Mechanical screw-M Note: Please return parts and screws where it belongs, as it may influence the projector's performance and security.
  • Page 21 Mechanical disassembly 1. Top cover, key pad and filter disassembly 1. Remove 8 screws A (M3X8), then take out the top cover. 2. Remove 1 screws B (M3X8), and take out the filter and air intake. 3. Rotate the lens cover and take out directly. 4.
  • Page 22 Mechanical disassembly 2. Terminal, main board and LCD board disassembly Only for model w/o HDBaseT function 1. Remove 1 screw A (M3X8) and 3 screws B (M3X8), then take out the terminal board cover. 2. Remove 2 screws C (M3X6) and 6 screws D (M3X7), then take out the main board. 3.
  • Page 23 Mechanical disassembly LCD board Main board HDBaseT board Terminal sheet metal Terminal board cover B D D Rear remote panel board 3. Power box disassembly 1. Remove 3 screws B (M3X8), then take out the Wire bracket. 2. Remove 3 screws C (M3X6), then take out the power shielding bracket for exhausting air and the fan. 3.
  • Page 24 Mechanical disassembly 4. Laser light source disassembly 1. Remove 4 screws A (M3X8) , then take out the light source radiator plastic cover and the exhausting fan for the light source radiator. 2. Remove 1 screw A (M3X8), and 4 screws B (M3X6) , then take out the laser light source component. 3.
  • Page 25 Mechanical disassembly 6. Air duct of LCD panel disassembly 1. Remove 2 screws A (M3X8), then take out the the lens bracket-Bottom. 2. Remove 12 screws A (M3X8), then take out the the top LCD air duct, bottom LCD air duct and the LCD fan. Lens bracket-Bottom Bottom LCD air duct Bottom cover...
  • Page 26 Mechanical disassembly 8. Laser driver board disassembly 1. Remove 6 screws A (M3X6) ,then take out the back cover of the power box and the power board. 2. Remove 4 screws B (M3X6) , then take out the laser driver board. Back cover of the power box Power board Laser driver board...

  • Page 27: Adjustment

    Adjustment Service adjustment menu operation 1) Enter service mode Press the Menu and button for more than 3 seconds. Then the serice mode menu will display to enter to the serice mode showenas follows. Service Mode Group NO. Input Computer 1 Item NO.

  • Page 28: Adjustment After Replacement Parts

    Adjustment Adjustment after replacement parts ● : Adjustmen : Check  Remove / Replace parts Polarizing LCD/ Condenser POWER MAIN Prism lens(OUT) board board board Optical ● Optical center adjustment  adjustment Check and set the screen type ●  ●...

  • Page 29: Electric Adjustment

    Electric adjustment Note: The circuit has been accurately adjusted at the factory. DO NOT attempt to adjust the following circuit as it may cause serious damage to property and product safety unless you have to adjust it during maintenance. Before adjustment, please turn on the projector to preheat at least 10 minutes. 1.
  • Page 30 Electric adjustment 2. Screen type checking and setting * Before setting up, you need to check the type of LCD screen used by the projector according to the section "LCD Screen/Prism Component Disassembly" in "Optical Component Disassembly". 1. Enter the service mode. 2.
  • Page 31 Electric adjustment 6. White Balance Adjustment After replacing panel or motherboard, 16 gray scale is needed to confirm the color deviation of the picture. If the color deviation of the picture occurs, please adjust the white balance manually. The operation is as follows. input signal 16 Gray Scale Pattern Diagram 1.

  • Page 32: Chassis Block Diagram

    Chassis block diagram Block diagram XGA&WXGA series Network ON_MCU ON_5V_VGA 24MHz Normal for R LVDSx2 EEPROM CXA3828GL for G Sony OUTPUT S16V_LCD(16V_ON) S16V (16V_ON) CXD3551GG PWC895 I2C_PANEL for B Topaz Enhance R/G/B 162MHz Memory IF ON_5V_VGA DDR3*2 4k@30Hz TMDS TMDS 300MHz 4k@30Hz Up to 300MHz HDCP1.4b...

  • Page 33: Fan Control Diagram

    Chassis block diagram Fan control diagram FAN_12V FAN1 S16.5V PWM1 FAN_12V FAN_EN FAN2 FR9889 PWM2 IC5301 FAN_12V FAN3 PWM3 FAN_12V FR9889 IC7001 FAN4 PWM4 PWC895 FAN_12V IC2001 FAN5 PWM5 FAN_12V SCL1 MG82FG5C64 FAN6 SDA1 IC5302 PWM6 FAN_ERR -33-...

  • Page 34: Trouble Shooting

    Trouble shooting Light indicator and projector status Light indicator indicates the projector status. If you have met kinds of unexpected problems when you operate the projector, please do as the following table says to check the operation of the projector. Check light indicator to learn status of your projector to ensure your projector in the best state.
  • Page 35 Trouble shooting Indicator Message (Error message) POWER STATUS LIGHT Projector status Procedure A button has been pressed while the KEY The projector's keys are locked. The setting LOCK is activated. must be canceled to operate the projector. Orange (Light) ID numbers for the projector and the re- Check the control IDs mote control do not match.
  • Page 36 Trouble shooting *3 Repetition to light on for 2.5 seconds / off for 0.5 seconds *4 Repetition to light on for 0.5 seconds / off for 0.5 seconds • When the thermal protector is activated: When inside temperature of the projector becomes too high or low, the POWER indicator start to red blink in a short cycle. After this happened, the thermal protector will activate and the projector may be turned off.

  • Page 37: No Power

    Trouble shooting No power We can indentify the abnormal area through light indicator status. Connect the AC power cord, press button to check light indicator. - All light indicators will be Off indicates the main board abnormal. Please check the main board circuit and component.

  • Page 38: Power On Abnormal

    Trouble shooting Power on abnormal Follow the steps below for check: Check the main board Power abnormal 16V_MCU and the power. Check Power board. The POWER indicator turns Off. Check ECO3_3V is normal Check IC2601 partial circuit. Update Sub CPU. Fail to power on;...

  • Page 39: Image Display Abnormal

    Trouble shooting Image display abnormal Check the image as the following steps. Singal input ; but no Check signal processing and LCD drive. image display Check the S16V power supply and peripheral device loop. Check the connection between the main board to PANEL board. VGA input;...

  • Page 40: No Sound

    Trouble shooting No sound Follow the steps below for check: Check whether the pins No sound 63/57 and 56/50 of IC 1. Check whether the speaker line is inserted properly and whether the 3602 have output wave- speaker line is broken? form.
  • Page 41 Trouble shooting How To Reset Error Log Error History Log Group-item Value Please press the [OK] + [UP] keys simultaneously 200-50 1 > 0 > 1> 2 > 3...> 9 > 10 for 3 seconds Enter the Service mode and choose Group 220 look at the right side item "Data Code".
  • Page 42 Trouble shooting Value Descriptions Detail 1000 Power supply is in an abnormal state 1004 FAN 1 is abnormal 1005 FAN 2 is abnormal 1006 FAN 3 is abnormal 1007 Power supply FAN 4 is abnormal abnormal 1008 FAN 5 is abnormal 1009 FAN 6 is abnormal 1010...

  • Page 43: Parts Location Diagram

    Parts location diagram Parts location & Mechanical components list diagram For detailed informatiion about part location and mechanical components list diagram. Important safety instruction Components identified by international symbol identifies hold the special security features. Please use the specified model for replacement . Please make sure the parts list and the service code in structural parts list diagram before ordering repair parts.
  • Page 44 Parts location diagram Top cover & Light source component INDEX PART NAME PART CODE BTM-Case 63220219 Dust filter 63340119 Dust filter cover 63220226 Top cover_EIKI 63220218 Keypad 63730271 LED board 63730272 Terminal & main board component INDEX PART NAME PART CODE Panel board (WUXGA) 63730270 Main board EK-700LUL...
  • Page 45 Parts location diagram Power box component INDEX PART NAME PART CODE Switch Board 63730274 Power board 63670070 63260085 FAN 6 Laser light source component INDEX PART NAME PART CODE QTY LED board 63730272 FAN 4 63260084 FAN 5 63260086 VELA&Taurus WUXGA_LSR 63080046 -45-...
  • Page 46 Parts location diagram OPT component INDEX PART NAME PART CODE QTY OPT component (WUXGA ) 63010103 LCD panel fan INDEX PART NAME PART CODE LCD duct-Bottom FAN 1 63260087 FAN 2 63260088 FAN 3 63260089 Fan switching board 63730273 LCD duct-top -46-...

  • Page 47: Pcb Diagram

    PCB diagram Important safety instruction Components identified by International symbol identifies hold the special security features. Please use the specified model for replacement .  Low voltage and high voltage warning The power supply circuit includes a circuit unit to seperate the power supply from ground. ●...
  • Page 48 PCB diagram Main board PCB (Top) Main board PCB (Bottom) Power board PCB (Top) Power board PCB (Bottom) -48-...
  • Page 49 ART FILM - adt ART FILM - adb PCB diagram LED board(Top) LED board(Bottom) ART FILM - adt Keypad ART FILM - adt ART FILM - adb ART FILM - adt Fan switch board (Top) Fan switch board(Bottom) -49-...
  • Page 50 PCB diagram ART FILM - adt ART FILM - adb Laser adapter board PCB (Top) Laser adapter board (Bottom) ART FILM - adt ART FILM - adb Panel board PCB (Top) - WXGA&XGA series Panel board PCB (Bottom) - WXGA&XGA series ART FILM - adt ART FILM - adb -50-...

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