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Multimedia Projector Model No. LC-NB3E
SERVICE MANUAL
(U.S.A., Canada)
ORIGINAL VERSION
Chassis No. MM8-NB3E00
Give complete “Chassis No.” for parts
order or serviceing, it is shown on the
rating sheet on the cabinet on the pro-
jector.
FOREWORD
For your convenience, all service parts, identified in this manual are available through Eiki’s normal distribution channels.
In addition to service part number, the generic descriptions have been given, where possible, to allow your service
technician
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■ Contents ■ Safety instructions ________________________________________________3 ■ Specifications __________________________________________________ 4 ■ Note on Servicing ______________________________________________ 5 ■ Adjustments after parts replacement ________________________________ 5 ■ Circuit protections ______________________________________________ 6-7 ● Fuse ____________________________________________________ 6 ● Thermal switch ____________________________________________ 6 ● Inte
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■ Safety Instructions SAFETY PRECAUTIONS WARNING: The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is iden- tified with the line ( ) in the schematic diagram. For continued product safety and protection of personnel injury, servicing should be made with qualified personnel. The following precautions must be observed. 1: An
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■ Specifications Projector Type Multi-media Projector Dimensions (W x H x D) 13.11” x 3.52” x 9.25” (333mm x 89.5mm x 235mm) Net Weight 8.6 lbs (3.9 kg) LCD Panel System 0.9” TFT Active Matrix type, 3 panels Panel Resolution 800 x 600 dots Number of Pixels 1,440,000 (800 x 600 x 3 panels) Color System 6 color system (PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N) High Definition TV SIgnals 480i, 480p, 575i, 575p, 720p. 1035i and 1080i Scanning Frequency H-sync. 15 ~ 100kHz, V-sync. 50 ~ 100Hz Proj
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■ Adjustments after Parts Replacement ● : Adjustment necessary ❍ : Check necessary Disassembly / Replaced Parts LCD/ Polarized glass Condenser Condenser Main Relay P. F . Power Prism Lens Lens-Out Board Lens-Out Board Board RG B Ass’y Condenser lens adjustment ❍● Condenser lens-out adjustment❍● Relay lens-out adjustment❍● Contrast Adjustment R-Contrast adjustment ● G-Contrast adjustment ● B-Contrast adjustment ● Output voltage adjustment ● Fan voltage adjustment ● Pedestal adjustment ● NRS adjus
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■ Circuit Protections This projector is equipped with the following circuit protections to operate in safety. If the abnormality occurs inside the projector, it will automatically turn off by operating one of the following protection circuits. ● Fuse Line Filter Board The fuse is located inside of the projector. When either the LAMP Fuse indicator or the READY indicator is not illuminated, fuse may be opened. Check the fuse as following steps. It should be used the specified fuse as follows; Fus
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Circuit Protections ● Warning temperature and power failure protection The TEMP WARNING indicator flashes red and the projector will automatically turn off when the internal tempera- ture of the projector exceeds the normal temperature or when stopping cooling fans or when the internal power supply lines are failed. Check the following possible causes and wait until stopping the TEMP WARNING indicator flashing. Possible causes - Air filter is clogged with dust particles. Remove dust from the air
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■ Mechanical Disassemblies Mechanical disassemble should be made following procedures in numerical order. Following steps show the basic procedures, therefore unnecessary step may be ignored. Caution: The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of performance and product safety. 1 Cabinet Top and Control Panel removal 1 Remove 4 screws A to take the Cabinet Top Ass’y upward off. 2 Remove the Control Panel off from the Cabinet Top by
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Mechanical Disassemblies 3 AV, AV Sub Board and Speaker removal 1 Remove 1 screw A to release a grounding wire. 2 Pull the Rear Panel ass’y upward. 3 Remove 4 screws B and take AV Board off. 4 Remove 4 screws C and take AV Sub Board off. 5 Remove 4 screws D and take Speaker off. AV board C AV Sub board B C C B B B D D A Speaker Fig.3 4 Front Panel and R/C Board removal 1 Remove 4 screws A and unhook 2 hooks B at the both of left and right side, and the take the Front Panel ass’y off. 2 Remove 1
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Mechanical Disassemblies 5 Lamp Ballast Unit removal 1 Remove 1 screw A and disconnect the Lamp Socket. 2 Remove 2 screws B to take the Lamp Ballast ass’y upward off. 3 Remove 4 screws C to take the Lamp Ballast Board off. B B C C C C A Lamp ballast board Fig.5 6 Filter Board removal 1 Remove 3 screws A and pull the Filter Board ass’y upward. 2 Remove 1 screw B to take the grounding lead from the cabinet bottom. 3 Remove 4 screws C to take the Filter Board off. A C A Filter board C C C A B Fig.6
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Mechanical Disassemblies 7 Power Box Cover and Fans(FN901, FN906) removal 1 Remove 4 screws A to take the Fan(FN901) off. 2 Remove 4 screws B to take the Fan(FN905) off. 3 Remove 3 screws C to take the Power Box Cover upward off. A A B FN906 A A BB B C C C Power box cover FN901 Fig.7 8-1 Optical Unit removal 1 Remove 1 screw A to take the Lamp Cover off. 2 Loosen 3 screws B to take the Lamp assembly by pulling the handle. Step to next procedure. Lamp ass’y B B B Lamp cover Fig.8-1 A -11-
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Mechanical Disassemblies 8-2 Optical Unit removal Step from previous procedure. 3 Remove 6 screws C to take the Optical Unit upward upward off. To mount optical unit, mount optical unit first then mount the Lamp assembly and Lamp Cover. C C C C C C Optical unit Fig.8-2 9 Power and P.F. Board removal B 1 Remove 8 screws A to take the Power Board ass’y B B B upward off. 2 Remove 4 screws B to take the P. F. Board from the A Power Board. A A 3 Remove 3 screws C to take the Power Board holder A from
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Mechanical Disassemblies 10 Fan (FN905) removal 1 Remove 1 screw A and take a Washer, Spring and A Interlock Switch lever. Interlock switch lever 2 Pull the Fan and duct ass’y upward, then remove the 2 screws B to take the Fan (FN906) off. B B FN905 Fig.10 11 Temp Board and Fans (FN902, FN903, FN904) removal A B B 1 Remove 1 screw A to take the Temp. Board off. B B 2 Remove 8 screws B and to take the Fan Duct B Temp board Top off and remove the Fans (FN902, FN903, B B FN904). 3 Remove 4 screws
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■ Optical Parts Disassemblies Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassemblies”. Disassembly requires a 2.0mm hex wrench and a screwdriver. Projection Lens removal 1 Remove the Front Panel following to “Front Panel Removal” on “Mechanical Disassemblies”. 2 Remove 4 screws to take the Projection Lens ass’y off. Fig.1 Integrator Lens-In disassembly 1 Remove 2 screws A and pull the Integrator Lens-In ass’y upward. 2 Remove 1 stoppers B and t
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Optical Pats Disassemblies Condenser lens disassembly 1 Remove 2 screws A and pull the Condenser Lens ass’y upward. 2 Remove 4 screws B to take the Lens off from the holder. A A B Condenser Lens Holder B B B * Lens should be placed as the flat Fig.3-2 surface side comes to the holder side. Fig.3-1 Condenser Lens-Out disassembly 1 Remove 2 screws A and pull the Condenser Lens-Out ass’y upward. 2 Remove 2 screws B to take the Lens off from the holder. Note: Lens should be placed as shown in the fi
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Optical Parts Disassemblies Relay Lens-Out disassembly 1 Remove 2 screws A and pull the Relay Lens-Out ass’y upward. 2 Remove 2 screws B to take the Lens off from the holder. Note: There is no mounting direction of the lens. A B A Holder B Relay Lens-Out Fig.5-2 Fig.5-1 Polarized Glass-In removal 1 Remove each screw and pull the Polarized Glass-In ass’y upward. 2 Unhook the stoppers and take the glass off upward. Phase Sheet Polarized Glass-In Hooks * Should be places the glass as the film attac
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Optical Parts Disassemblies Polarized Glass-Out removal 1 Remove 4 screws A and take the LCD/Prism ass’y off upward from the optical unit. 2 Remove each screw B and take the glass off upward. A A A LCD Panel/Prism Ass’y Note: Do not replace the LCD panel separately otherwise it can not obtain proper picture. LCD Panel/Prism Ass’y B Polarized Glass-Out LCD Panel * Glass should be placed as the film attached side comes to the LCD Fig.7-2 panel side. Fig.7-1 Optical Unit Top removal 1 Remove 9 scre
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Optical Parts Disassemblies Locations and Directions Key No. Description 1 Mirror (W) When mounting or assembling the optical parts in the optical unit, the 2 Integrator lens (OUT) parts must be mounted in the specified location and direction as 3Prism beam splitter (PBS) shown in figure below. 4 Dichroic mirror (B) 5 Condenser lens (OUT) 1 6 Dichroic mirror (G) 7Relay lens (IN) 8 Mirror (R) 9 Condenser lens (R) 10 Condenser lens 2 11 Condenser lens (B) 12 Optical filter (UV cut) 13 Mirror (B)
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■ LCD Panel/Prism Ass’y Replacement IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y. These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced whole of the LCD panels and prism ass’y at once. After replacing LCD Panel/Prism ass’y, please check the following adjustments. - Check the “Condenser Lens Adjustment” , “Condenser Lens-Out
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■ Lamp Replacement WARNING: ORDER REPLACEMENT LAMP - For continued safety, replace with a lamp assembly of the same type. Type No. Service Parts No. - Allow the projector to cool for at least 45 minutes before you open the POA-LMP35 610 293 2751 lamp cover. The inside of the projector can become very hot. - Do not drop the lamp module or touch the glass bulb! The glass can shatter and cause injury. Procedure 1 Turn off the projector and disconnect the AC cord. Allow the projector to cool for at
