EIKI - PROJECTOR - SERVICE HELP

EIKI - LC-XG110 | LC-XG210 | MJ7-XG11000 | MH7-XG21000


     This projector provides the following circuit protections to operate in safety.  If the abnormality occurs inside the projector, it will automatically turned off by operating one of the following protection circuits. 


FUSE
     The fuse is located inside the projector.  When either the lamp indicator or the ready indicator is not illuminated, fuse may be opened.  It should be used the specified fuse:
FUSE PART NO: 645 058 8181
TYPE: 8A 250V FUSE.

HOW TO REPLACE THE FUSE.

• Remove the cabinet top .
• Remove the fuse from the holder, and install the new fuse.

THERMAL SWITCH 

     There is a thermal switch (SW905) inside the projector to prevent the internal temperature rising abnormally.  When the internal temperature rises near 90 degreeC, turn OFF the AC mains supply automatically.  

     The thermal switch is not reset to normal automatically, even if the internal temperature becomes normal.  Reset the thermal switch following procedure.

Check the resistance between terminals of thermal switch by using a tester.  If it has high impedance thermal switch may be in-operative.

HOW TO RESET THERMAL SWITCH

1. Remove the cabinet top.
2. Press the 'Reset' button on the thermal switch.  (Before press the reset button, make sure that the AC cord must be disconnected from the AC outlet.

INTERLOCK SWITCH

     The interlock switch (SW902), cuts of AC mains power supply, when the lamp cover is removed.  After opening the lamp cover for replacing the Lamp Assembly, place the lamp cover correctly otherwise the projector can not turn ON.

WARNING TEMPERATURE AND POWER FAILURE PROTECTION

     The projector will be automatically turned off when the internal temperature of the projector exceeds the normal operating temperature, or cooling fan stops or the power supplies in the projector are failed.

      If Temperature Warning [Red] and ready [Green] indicators are flashing at the same time, it may defect the cooling fans and power supply circuits.  Check fan operation and power supply lines.

Possible Causes.

• Air filter is clogged with dust particles.  Remove the dust from the air filter.
• Ventilation slots of the projector are blocked.
• Ensure proper ventilation, if the projector is used in closed enclosures.

AIR FILTER CARE AND CLEANING

1. Turn the power Off and unplug the projector from AC mains socket.
2. Turn the projector upside down and remove air filters by pulling the latches of them upwards.
3. Clean the air filters by brush or wash out the dust particles.  
4. Replace each air filter properly.  Make sure that air filters are fully inserted. 

MECHANICAL DISASSEMBLIES

• Cabinet Top Removal.

1. Remove two screws to take the cabinet Front Top off and then remove the lens Front Cover.
2. Remove five screws and then take the cabinet Top Upward off.

• Main Board & Thermal Switch Removal.

1. Remove one screw to take the thermal switch.
2. Remove five screws to take the main board upward.

• AV Com Board & Rear Panel Removal

1. Remove one screw and take the Rear Panel Ass'y Upward.
2. Remove four screws to take AV board from the Rear Panel ass'y off.
3. Remove five screws to take the Com Board from the Rear Panel ass'y off.

• Cabinet Front Removal

1. Remove the lens cover upwards.
2. Remove two screws and take the Cabinet Front Off.
3. Remove one screw and take the R/C board off.
4. Remove three screws and take the Filter Holder off.

• Audio Board Removal

1. Remove three screws and pull the Holder ass'y upward off.
2. Remove four screws to take the Audio Board from the holder.

• speaker Base Removal.

1. Remove three screws and then remove the Speaker Base.

• Optical Unit Removal

1. Loosen one screw on the lamp cover and two screws on the lamp house and take the lamp house off from the cabinet bottom.
2. Remove two screws and disconnect the Lamp Socket.
3. Remove two screws and remove shield plate.
4. Remove five screws on the optical unit, one screw on the duct ass'y and then pull the optical unit upward off.

• Fan and Motor removal

1. Remove four screws the take the fan off.
2. Remove three screws to take the fan off.
3. Remove four screws to take the duct ass'y off.
4. Remove two screws to take the Lens Shift Motor and Sensor SW holder from the base.

• Lamp Ballast Removal

1. Remove four screws and then pull the ballast bard ass'y upward off.
2. Remove three screws to take the fan off.
3. Unhook four hooks and take the lamp ballast board off.  
4. Disconnect the power DC board from the power AC board.

• Power AC Board Removal.

1. Remove four screws to take the Power Board off.
2. Remove four screws to take the holder from the cabinet bottom.

• Line Filter Board & Interlock Switch Removal

1. Remove three screws to take the Filter Board Ass'y upward.
2. Remove three screws and an other screw to take the filter board from the holder.
3. Remove two screws to take the interlock switch from the cabinet bottom.

• Fans Removal.

1. Remove one screw and then take the fan off, and remove three screws to take the duct-A off
2. Remove four screws to take the duct-B off.
3. Remove three screws to take the duct-C off.
4. Remove two screws to take the fan off. Remove two screws to take the fan off.
5. Remove two screws to take the duct cover off, and remove two screws to take the fan off.
6. Remove five screws to take the duct-D off.