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Multimedia Projector Model No. LC-X71
SERVICE MANUAL
LC-X71L
(U.S.A., Canada, Europe)
ORIGINAL VERSION
Chassis No. KE6-X7100
KE6-X71L00
LC-X71
LC-X71L (LENSLESS)
Give complete “Chassis No.” for parts
order or servicing, 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 chan-
nels.
In addition to service part number, the generic descriptions have been giv
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Contents Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Circuit Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Mechanical Disassem
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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 is
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Specifications Multi-media Projector Projector Type 12.6” x 6.6” x 16.8” (319 mm x 170.8 mm x 435.5 mm) Dimensions (W x H x D) 19.8 lbs (9.0 kg) LC-X71, 18.0 lbs (8.2 kg) LC-X71L Net Weight LCD Panel System 1.3” TFT Active Matrix type, 3 panels Panel Resolution 1024 x 768 dots 2,359,296 (1024 x 768 x 3 panels) Number of Pixels PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N Color System 480i, 480p, 575i, 575p, 720p, 1035i, and 1080i High Definition TV Signal H-sync. 15 kHz ~ 100 kHz, V-sync. 48 ~
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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 The fuse is located inside of the projector. When either the LAMP indicator or the READY indicator is not illuminated, fuse may be opened. Check the fuse as following steps. Filter Board Fuse It should be used the specified fuse as follows; Fuse Part
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Circuit Protections ● Warning temperature and power failure protection The WARNING TEMP. 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 sup- ply 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
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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. A 1 Cabinet Top removal 1 Remove 5 screws A, 2 screws B, and loosen 2 screws A C, and then take the Cabinet Top upward off. Note: If you want to remove the Ca
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Mechanical Disassemblies 3 Main Board removal 1 Remove 6 screws to take the Main Board upward. Main Board Fig.3 4 AV, I/F Board & Rear Panel removal FN905 B 1 Remove 1 screw A and take the Rear Panel ass’y B B upward off. B 2 Remove 4 screws B to take the fan (FN905) off. 3 Remove 5 screws C and 1 screw D to take AV Board C from the Rear Panel ass’y off. 4 Remove 2 screws E and grounding leads and then pull up the I/F Board and Holder assy from the bottom cabi- net. 5 Remove 4 screws F to take t
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Mechanical Disassemblies B B 5 FN904 Lamp Ballast Unit removal B 1 Remove 4 screws A to take the Ballast Cover upward A off. Ballast Cover 2 Remove 3 screws B to take the Fan (FN904) and the A C Fan mounting base off. A A C 3 Remove 2 screws C to take the Fan (FN904) off from the Fan mounting base. 4 Remove the Sub Power Board and Drive Board by pulling them upward. Sub Power Board Ballast Board Drive Board Fig.5 FN906 F E F 6 Optical Unit removal D D 1 Remove 1 screw A and then remove the hold
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Mechanical Disassemblies 7 Prism Base removal 1 Remove 2 screws A to take the Prism Base ass’y A upward off. 2 Remove 2 screws B to take the Lens Shift Motor and A Sensor SW Holder from the Base. B B Prism Base Ass’y Motor and Sensor Holder Fig.7 8 Power Board removal A 1 Remove 3 screws A to take the Power Board off. A Power Board 2 Remove 4 screws B to take Holder off from the cabinet bottom. A B B B B Power Board Holder Fig.8 - 10 -
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Mechanical Disassemblies 9 Filter Board & Interlock SW & Thermal SW removal 1 Remove 1 screw A to take Interlock Switch(SW902). 2 Remove 2 screws B to take Filter Board Holder and remove 2 screws C to take Filter Board from the Holder. B C 3 Remove 1 screw D to take Thermal Switch(SW905). B C Interlock Switch A (SW902) Filter Board Thermal Switch (SW905) D Holder Fig.9 Air-duct-A R-net Board AA 10 Fans (FN901, FN902) removal A F E G 1 Remove 4 screws A to take Air-duct Top off. G A F 2 Remove 1
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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 or 2.5mm hex wrench and a slot screwdriver. Projection Lens removal 1 Shift the Projection lens to the low end by the LENS SHIFT function. 2 Remove Cabinet Front-Top following to the chapter “Mechanical Disassemblies”. 3 Slide the lens lock lever A on the projector to "UNLOCK"(UPPER) posi- Lens attachment tion and remove the Project
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Optical Pats Disassemblies Polarized Glass-In removal 1 Remove each hex screw A and pull the Polarized Glass-In ass’y upward. 2 Remove each hex screw B and pull the Optical Filter (HCP) ass'y upward. 3 Remove the stoppers and take the polarized glasses and optical filters off upward. Fig.3-1 A Optical filter (HCP) *2 The Optical Filter (HCP) should be placed B Polarized glass as the colored marking comes to upper side and the gap comes to the Polarized Film sheet(*1) Glass-In. Marking(*2) Optica
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Optical Pats Disassemblies Polarized Glass-Out and Wide view Glass removal 1 Remove 4 hex screws A and take the LCD/Prism ass’y off upward. 2 Remove 3 screws B and take the Glass Holder, and then pull the polarized Glass-Out and the wide view glass upwards off. These glasses are mount- ed for R, G and B LCD panels respectively. Note: To avoid the CG and focus alignments slipping off, please be careful to han- dle the LCD/Prism ass'y. A A LCD Panel/Prism Ass’y A Note: Do not replace the LCD panel
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Optical Pats Disassemblies Optical Unit Top removal 1 Remove 7 screws to take the Optical Unit Top off upward. Fig.5 Condenser Lens disassembly 1 Remove 2 hex screws A and take the Condenser Lens ass’y. 2 Release 4 hooks B to take the Lens off from the holder. A A *Lens should be placed as the flat surface side comes to the holder side. B Holder Condenser Lens Fig.6-2 Condenser Lens Fig.6-1 - 15 -
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Optical Parts Disassemblies Locations and Directions Key No. Description 1 Condenser lens (R) When the optical parts in the optical unit mounting or assembling, the 2 Condenser lens parts must be mounted in the specified location and direction as 3 Condenser lens shown in figure below. 4 Mirror (B) 5 Dichroic mirror (B 6 Dichroic mirror (G) 7 Mirror (W) 8 Condenser lens (IN) 9 PBS (prism beam splitter) 10 Integrator lens (OUT) 11 Integrator lens (IN) 12 Relay lens (IN) 13 Mirror (R) 1 3 13 2 4 5
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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” and “Relay Lens Adjustme
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LCD Panel/Prism Ass'y Replacement Note on LCD Panel/Prism Ass’y There are 2 types combination of the LCD panel/prism assembly and the optical unit, named Type-R and Type-L. Since both have no compatibility, each type should be com- bined with the same type, and the specific parts should be used. If not, the poor optical characteristics may degrade the quality of a projected image. Confirm the "R" label or "L" label on top of the LCD panel/ prism assembly and the optical unit. NOTE: LCD panel/pri
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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-LMP101 610 328 7362 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 l
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Adjustments after Parts Replacement ● : Adjustment necessary ❍ : Check necessary Disassembly / Replaced Parts LCD/ Sub Polarized glass Main Condenser Relay Power Prism Power Lens Lens Board RG B Board Ass’y Board Condenser lens adjustment ❍● Relay lens adjustment ❍● Contrast Adjustment R-Contrast adjustment ● G-Contrast adjustment ● B-Contrast adjustment ● Output voltage adjustment ● +16V adjustment ❍ Fan output voltage adjustment ●● Video center adjustment ● PSIG adjustment ● PC black level adj
